USRE29484E
Expired / Lapsed
US
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Barium titanate base ceramic composition having a high dielectric constant
Assignee: NEC Corp
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Filing: 1976-10-04
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Granted: 1977-11-29
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Expires: 1996-10-04
Abstract
Abstract A ceramic composition having a high dielectric constant which has good stability with temperature variation and the passage of time includes BaTiO 3 in which the molecular ratio of Ba to Ti ranges from about 0.9 to 1.1 as the basic constituent and about 0.1 to 10 mol % of at least one compound selected from the group of Nb 2 O 5 and Ta 2 O 5 and about 0.01 to 15 mol % of at least one compound selected from the group consisting of In 2 O 3 , Ga 2 O 3 , Tl 2 O 3 , MgO, ZnO and NiO as sub constituents.
Inventors
- 👤 Kazuaki Utsumi
- 👤 Norio Tsubouchi
- 👤 Tomeji Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:43
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/12; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/48; C04B35/50; C04B35/51
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
69 words
A dielectric ceramic composition having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 , and about 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 .
Claim 2
Dependent Claim
69 words
A dielectric ceramic composition having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 , and about 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 .
Claim 3
Dependent Claim
82 words
A dielectric ceramic composition having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 , 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 , about 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 , and about 0.01 to 10 mol % of Al 2 O 3 .
Claim 4
Dependent Claim
82 words
A dielectric ceramic composition having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 , 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 , about 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 , and about 0.01 to 10 mol % of Al 2 O 3 .
Claim 5
Dependent Claim
69 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Nb 2 O 5 as a sub constituent, and 0.05 to 5.0 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 as another sub constituent.
Claim 6
Dependent Claim
69 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Nb 2 O 5 as a sub constituent, and 0.05 to 5.0 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 as another sub constituent.
Claim 7
Dependent Claim
102 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Nb 2 O 5 as one sub constituent, 0.05 to 5.0 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 as a second sub constituent and 0.5 to 5.0 mol % of Al 2 O 3 as a third sub constituent, the total amount of said sub constituents being within a range of 1.05 to 10 mol %.
Claim 8
Dependent Claim
102 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Nb 2 O 5 as one sub constituent, 0.05 to 5.0 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 , and Tl 2 O 3 as a second sub constituent and 0.5 to 5.0 mol % of Al 2 O 3 as a third sub constituent, the total amount of said sub constituents being within a range of 1.05 to 10 mol %.
Claim 9
Dependent Claim
69 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Ta 2 O 5 as a sub constituent, and 0.05 to 5.0 mol % of at least one of the compounds In 2 O 5 , Ga 2 O 3 , and Tl 2 O 3 as another sub constituent.
Claim 10
Dependent Claim
69 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Ta 2 O 5 as a sub constituent, and 0.05 to 5.0 mol % of at least one of the compounds In 2 O 5 , Ga 2 O 3 , and Tl 2 O 3 as another sub constituent.
Claim 11
Dependent Claim
84 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Ta 2 O 5 as a sub constituent, 0.05 to 5.0 mol % of at least one of the compounds In 2 O 5 , Ga 2 O 3 , and Tl 2 O 3 as another sub constituent and 0.5 to 5.0 mol % of Al 2 O 3 as a further sub constituent.
Claim 12
Dependent Claim
84 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of BaTiO 3 as a basic constituent, 0.5 to 5.0 mol % of Ta 2 O 5 as a sub constituent, 0.05 to 5.0 mol % of at least one of the compounds In 2 O 5 , Ga 2 O 3 , and Tl 2 O 3 as another sub constituent and 0.5 to 5.0 mol % of Al 2 O 3 as a further sub constituent.
Claim 13
Dependent Claim
86 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of non-stoichometric BaTiO 3 in which the molecular ratio of Ba to Ti lies within the range of approximately 0.9 to 1.1, 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 ; and 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 and Tl 2 O 3 .
Claim 14
Dependent Claim
86 words
A dielectric ceramic composition, having a high dielectric constant, consisting of 77.5 to 99.79 mol % of non-stoichometric BaTiO 3 in which the molecular ratio of Ba to Ti lies within the range of approximately 0.9 to 1.1, 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 ; and 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 and Tl 2 O 3 .
Claim 15
Dependent Claim
99 words
A dielectric ceramic composition having a high dielectric constant, consisting of 77.5 to 99.79 mol % of non-stoichometric BaTiO 3 in which the molecular ratio of Ba to Ti lies within the range of approximately 0.9 to 1.1, 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 ; 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 and Tl 2 O 3 ; and further including 0.01 to 10 mol % of Al 2 O 3 .
Claim 16
Dependent Claim
99 words
A dielectric ceramic composition having a high dielectric constant, consisting of 77.5 to 99.79 mol % of non-stoichometric BaTiO 3 in which the molecular ratio of Ba to Ti lies within the range of approximately 0.9 to 1.1, 0.1 to 10 mol % of at least one of Nb 2 O 5 and Ta 2 O 5 ; 0.01 to 15 mol % of at least one of the compounds In 2 O 3 , Ga 2 O 3 and Tl 2 O 3 ; and further including 0.01 to 10 mol % of Al 2 O 3 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |