US4873610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric articles and condensers using the same
Assignee: Canon Inc
•
Filing: 1989-01-31
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Granted: 1989-10-10
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Expires: 2009-01-31
Abstract
Abstract A dielectric article comprises a laminate of plural thin dielectric material layers wherein at least one kind of combination of dielectric material layers different in temperature characteristics of permittivity is present and thickness of each layer is 1000 ANGSTROM or less but not less than of monatomic layer.
Inventors
- 👤 Akira Shimizu
- 👤 Norio Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:22
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; B; B32; B32B; B32B18/00; C04B35/47; H; H01; H01B; H01B3/00; H01B3/02; H01B3/12; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/345; C04B2237/346; C04B2237/36; C04B2237/368; C04B2237/50; C04B2237/70; C04B2237/704
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
54 words
A dielectric article which comprises a plurality of laminated repeating unit cells, each unit cell comprising at least two thin dielectric material layers, one of said layers having temperature characteristic of permittivity different from the other and wherein the thickness of each layer is 1000Å or less but not less than of monatomic layer.
Claim 2
Dependent Claim
54 words
A dielectric article which comprises a plurality of laminated repeating unit cells, each unit cell comprising at least two thin dielectric material layers, one of said layers having temperature characteristic of permittivity different from the other and wherein the thickness of each layer is 1000Å or less but not less than of monatomic layer.
Claim 3
Dependent Claim
24 words
A dielectric article according to claim 1 wherein said unit cell comprises two kinds of dielectric material layers different in temperature characteristic of permittivity.
Claim 4
Dependent Claim
21 words
A dielectric article according to claim 1 which comprises three kinds of dielectric material layers different in temperature characteristic of permittivity.
Claim 5
Dependent Claim
20 words
A dielectric article according to claim 3 wherein the three kinds of dielectric material layers are regularly arranged and laminated.
Claim 6
Dependent Claim
53 words
A dielectric article according to claim 1 wherein the dielectric is selected from the group consisting of BaZrO 3 , CaTiO 3 , La 2 O 3 , TiO 2 , BaTiO 3 , PbTiO 3 , SrTiO 3 , Si 3 N 4 and (Pb x La.sub.(1-x))(Zr y Ti.sub.(1-y) O 3 .
Claim 7
Dependent Claim
17 words
A dielectric article according to claim 1 wherein the repetition number of said unit cell is 3-100.
Claim 8
Dependent Claim
18 words
A dielectric article according to claim 1 wherein the thickness of said dielectric article is 100Å or more.
Claim 9
Dependent Claim
19 words
A dielectric article according to claim 1 wherein the thickness of said dielectric article is 500 Å or more.
Claim 10
Dependent Claim
68 words
A condenser having a pair of electrodes and a dielectric article sandwiched between said electrodes which article comprises a plurality of laminated repeating unit cells, each unit cell comprising at least two thin dielectric material layers, one of said layers having temperature characteristic of permittivity different from the other and wherein the thickness of each layer is 1000 Å or less but not less than of monatomic layer.
Claim 11
Dependent Claim
68 words
A condenser having a pair of electrodes and a dielectric article sandwiched between said electrodes which article comprises a plurality of laminated repeating unit cells, each unit cell comprising at least two thin dielectric material layers, one of said layers having temperature characteristic of permittivity different from the other and wherein the thickness of each layer is 1000 Å or less but not less than of monatomic layer.
Claim 12
Dependent Claim
23 words
A condenser according to claim 9 wherein said unit cell comprises two kinds of dielectric material layers different in temperature characteristic of permittivity.
Claim 13
Dependent Claim
23 words
A condenser according to claim 9 wherein said unit cell comprises three kinds of dielectric material layers different in temperature characteristics of permittivity.
Claim 14
Dependent Claim
19 words
A condenser according to claim 11 wherein the three kinds of dielectric material layers are regularly arranged and laminated.
Claim 15
Dependent Claim
53 words
A condenser according to claim 9 wherein the dielectric is selected from the group consisting of BaZrO 3 , CaTiO 3 , La 2 O 3 , TiO 2 , BaTiO 3 , PbTiO 3 , SrTiO 3 , Si 3 N 4 , and (Pb x La.sub.(1-x)) (Zr y Ti.sub.(1-y))O 3 .
Claim 16
Dependent Claim
16 words
A condenser according to claim 9 wherein the repetition number of said unit cell is 3-100.
Claim 17
Dependent Claim
18 words
A condenser according to claim 9 wherein the thickness of said dielectric article is 100 Å or more.
Claim 18
Dependent Claim
18 words
A condenser according to claim 9 wherein the thickness of said dielectric article is 500 Å or more.
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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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |