Microwave dielectric ceramic composition
| Title: | Microwave dielectric ceramic composition |
|---|---|
| Patent Number: | 5,132,258 |
| Publication Date: | July 21, 1992 |
| Appl. No: | 07/747,571 |
| Application Filed: | August 20, 1991 |
| Abstract: | A microwave dielectric ceramic composition containing as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2 (where 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20) when their molar fractions are taken as x, y and z (x+y+z=1), and containing as additives predetermined amounts of one type selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and predetermined amounts of one type selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5. |
| Inventors: | Takahashi, Hisakazu (Osaka, JPX); Baba, Yoko (Osaka, JPX); Ezaki, Kenichi (Osaka, JPX); Okamoto, Yasuhiko (Osaka, JPX); Shibata, Kenichi (Osaka, JPX); Kuroki, Kazuhiko (Kyoto, JPX) |
| Assignees: | Sanyo Electric Co., Ltd. (Moriguchi, JPX) |
| Claim: | What is claimed is |
| Claim: | 1. A microwave dielectric ceramic composition consisting essentially of as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2, where 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20 when their molar fractions are taken as x, y and z such that x+y+z=1 and containing as a first additive at least one member selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and at least one second additive selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5, such that said first and second additives are present in respective amounts which are effective to raise a Q value of said composition to at least 5,000. |
| Claim: | 2. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said MnO and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 3. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3 and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 4. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said CuO and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 5. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 6. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said MnO and not more than 10 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 7. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3 and not more than 10 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 8. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said CuO and not more than 10 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 9. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O and not more than 10 parts by weight of Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 10. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 3 parts by weight of said Ga.sub.2 O.sub.3 and not more than 5 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 11. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 3 parts by weight of said Ga.sub.2 O.sub.3 and not more than 5 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 12. A microwave dielectric ceramic composition consisting essentially of as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2, wherein 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20 when their molar fractions are taken as x, y and z such that x+y+z=1 and containing as a first additive at least one member selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and at least one second additive selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5, and an amount opf ZnO which is effective to lower the sintering temperature of said composition, and wherein said first and second additives are present in respective amounts which are effective to raise a Q value of said composition to at least 5,000. |
| Claim: | 13. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said MnO, not more than 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 14. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3, 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 15. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said CuO, not more than 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 16. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O, not more than 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 17. The microwave dielectric ceramic composition according to claim 12, which contains not more than 5 parts by weight of said MnO, not more than 10 parts by weight of said Ta.sub.2 O.sub.5 as first and second additives, respectively, and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 18. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3, 10 parts by weight of said Ta.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 19. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said CuO, not more than 10 parts by weight of said Ta.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Claim: | 20. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O, 10 parts by weight of said Ta.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. |
| Current U.S. Class: | 501/134; 501/135 |
| Current International Class: | C04B 3546 |
| Patent References Cited: | 4339543 July 1982 Mage et al. 4665041 May 1987 Higuchi et al. 4785375 November 1988 Campbell |
| Primary Examiner: | Dixon, Jr., William R. |
| Assistant Examiner: | Gallo, Chris |
| Attorney, Agent or Firm: | Armstrong, Nikaido, Marmelstein, Kubovcik & Murray |
| Accession Number: | edspgr.05132258 |
| Database: | USPTO Patent Grants |
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| Header | DbId: edspgr DbLabel: USPTO Patent Grants An: edspgr.05132258 RelevancyScore: 698 AccessLevel: 3 PubType: Patent PubTypeId: patent PreciseRelevancyScore: 698.222351074219 |
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| Items | – Name: Title Label: Title Group: Ti Data: Microwave dielectric ceramic composition – Name: DocumentID Label: Patent Number Group: Patent Data: 5,132,258 – Name: DateEntry Label: Publication Date Group: Patent Data: July 21, 1992 – Name: DocumentID Label: Appl. No Group: Patent Data: 07/747,571 – Name: DateFiled Label: Application Filed Group: Patent Data: August 20, 1991 – Name: Abstract Label: Abstract Group: Ab Data: A microwave dielectric ceramic composition containing as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2 (where 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20) when their molar fractions are taken as x, y and z (x+y+z=1), and containing as additives predetermined amounts of one type selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and predetermined amounts of one type selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5. – Name: Author Label: Inventors Group: Patent Data: <searchLink fieldCode="ZA" term="%22Takahashi%2C+Hisakazu%22">Takahashi, Hisakazu</searchLink> (Osaka, JPX); <searchLink fieldCode="ZA" term="%22Baba%2C+Yoko%22">Baba, Yoko</searchLink> (Osaka, JPX); <searchLink fieldCode="ZA" term="%22Ezaki%2C+Kenichi%22">Ezaki, Kenichi</searchLink> (Osaka, JPX); <searchLink fieldCode="ZA" term="%22Okamoto%2C+Yasuhiko%22">Okamoto, Yasuhiko</searchLink> (Osaka, JPX); <searchLink fieldCode="ZA" term="%22Shibata%2C+Kenichi%22">Shibata, Kenichi</searchLink> (Osaka, JPX); <searchLink fieldCode="ZA" term="%22Kuroki%2C+Kazuhiko%22">Kuroki, Kazuhiko</searchLink> (Kyoto, JPX) – Name: OtherAuthors Label: Assignees Group: Patent Data: <searchLink fieldCode="ZS" term="%22Sanyo+Electric+Co%2E%2C+Ltd%2E%22">Sanyo Electric Co., Ltd.</searchLink> (Moriguchi, JPX) – Name: Comment Label: Claim Group: Patent Data: What is claimed is – Name: Comment Label: Claim Group: Patent Data: 1. A microwave dielectric ceramic composition consisting essentially of as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2, where 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20 when their molar fractions are taken as x, y and z such that x+y+z=1 and containing as a first additive at least one member selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and at least one second additive selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5, such that said first and second additives are present in respective amounts which are effective to raise a Q value of said composition to at least 5,000. – Name: Comment Label: Claim Group: Patent Data: 2. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said MnO and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 3. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3 and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 4. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said CuO and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 5. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O and not more than 10 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 6. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said MnO and not more than 10 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 7. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3 and not more than 10 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 8. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said CuO and not more than 10 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 9. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O and not more than 10 parts by weight of Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 10. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 3 parts by weight of said Ga.sub.2 O.sub.3 and not more than 5 parts by weight of said Nb.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 11. The microwave dielectric ceramic composition according to claim 1, which contains as first and second additives not more than 3 parts by weight of said Ga.sub.2 O.sub.3 and not more than 5 parts by weight of said Ta.sub.2 O.sub.5 with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 12. A microwave dielectric ceramic composition consisting essentially of as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2, wherein 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20 when their molar fractions are taken as x, y and z such that x+y+z=1 and containing as a first additive at least one member selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and at least one second additive selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5, and an amount opf ZnO which is effective to lower the sintering temperature of said composition, and wherein said first and second additives are present in respective amounts which are effective to raise a Q value of said composition to at least 5,000. – Name: Comment Label: Claim Group: Patent Data: 13. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said MnO, not more than 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 14. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3, 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 15. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said CuO, not more than 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 16. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O, not more than 10 parts by weight of said Nb.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 17. The microwave dielectric ceramic composition according to claim 12, which contains not more than 5 parts by weight of said MnO, not more than 10 parts by weight of said Ta.sub.2 O.sub.5 as first and second additives, respectively, and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 18. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Al.sub.2 O.sub.3, 10 parts by weight of said Ta.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 19. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said CuO, not more than 10 parts by weight of said Ta.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: Comment Label: Claim Group: Patent Data: 20. The microwave dielectric ceramic composition according to claim 12, which contains as first and second additives not more than 5 parts by weight of said Li.sub.2 O, 10 parts by weight of said Ta.sub.2 O.sub.5 and not more than 5 parts by weight of said ZnO with respect to 100 parts by weight of said substances which are main components. – Name: CodeClass Label: Current U.S. Class Group: Patent Data: 501/134; 501/135 – Name: CodeClass Label: Current International Class Group: Patent Data: C04B 3546 – Name: Ref Label: Patent References Cited Group: Patent Data: <searchLink fieldCode="RF" term="%224339543%22">4339543</searchLink> July 1982 Mage et al.<br /><searchLink fieldCode="RF" term="%224665041%22">4665041</searchLink> May 1987 Higuchi et al.<br /><searchLink fieldCode="RF" term="%224785375%22">4785375</searchLink> November 1988 Campbell – Name: AuthorEditor Label: Primary Examiner Group: Patent Data: <searchLink fieldCode="ZE" term="%22Dixon%2C+Jr%2E%2C+William+R%2E%22">Dixon, Jr., William R.</searchLink> – Name: AuthorEditor Label: Assistant Examiner Group: Patent Data: <searchLink fieldCode="ZE" term="%22Gallo%2C+Chris%22">Gallo, Chris</searchLink> – Name: AuthorCorporate Label: Attorney, Agent or Firm Group: Patent Data: <searchLink fieldCode="ZG" term="%22Armstrong%2C+Nikaido%2C+Marmelstein%2C+Kubovcik+%26+Murray%22">Armstrong, Nikaido, Marmelstein, Kubovcik & Murray</searchLink> – Name: AN Label: Accession Number Group: ID Data: edspgr.05132258 |
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| RecordInfo | BibRecord: BibEntity: Languages: – Text: English Titles: – TitleFull: Microwave dielectric ceramic composition Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Takahashi, Hisakazu – PersonEntity: Name: NameFull: Baba, Yoko – PersonEntity: Name: NameFull: Ezaki, Kenichi – PersonEntity: Name: NameFull: Okamoto, Yasuhiko – PersonEntity: Name: NameFull: Shibata, Kenichi – PersonEntity: Name: NameFull: Kuroki, Kazuhiko IsPartOfRelationships: – BibEntity: Dates: – D: 21 M: 07 Text: July 21, 1992 Type: published Y: 1992 |
| ResultId | 1 |