US3305394A
Expired / Lapsed
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Method of making a capacitor with a multilayered ferroelectric dielectric
Assignee: International Business Machines Corp
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Filing: 1964-06-30
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Granted: 1967-02-21
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Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 Harold D Kaiser
- 👤 Arthur H Mones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:53
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/258; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF FORMING A COMPOSITE DIELECTRIC STRUCTURE WHICH INCLUDES THE STEPS OF: PREPARING FIRST FERRELECTRIC MATERIAL PATICLES HAVING A HIGH DISTINCT TEMPERATURE DEPENDENT DIELECTRIC CONSTANT; FIRING SAID FIRST DIELECTRIC MATERIAL PARTICLES TO SINTER THEM TOGETHER AND FROM A FIRST, DISTINCT LAYER OF SAID FIRST FERROELECTRIC MATERIAL; PREPARING SECOND FERROELECTRIC MATERIAL PARTICLES HAVING A HIGH, DINTINCT TEMPERATURE DEPENDENT DIELECTRIC CONSTANT WHICH DIFFERS FROM THAT OF SAID FIRST FERROELECTRIC MATERIAL PARTICLES; DEPOSITING SAID SECOND FERROELECTRIC MATERIAL PARTICLES ON SAID FIRST, DISTINCT LAYER; AND FIRING SAID SECOND FERROELECTRIC MATERIAL PARTICLES AT A TEMPERATURE AND FOR A PERIOD OF TIME LONG ENOUGH FOR SINTERING SAID SECOND FERROELECTRIC MATERIAL PARTICLES TOGETHER TO FORM A SECOND, DISTINCT LAYER OF SAID SECOND FERROELECTRIC MATERIAL, AND FOR ACHIEVING A SINTERING BETWEEN THE INTERFACES OF THE RESPECTIVE LAYERS WITHOUT DIFFUSION OF THE MATERIAL OF EITHER LAYER THROUGHOUT THE MATERIAL OF THE OTHER LAYER THEREBY FORMING AN INTEGRAL COMPOSITE DIELECTRIC STRUCTURE OF DISCRETE LAYERS, SAID STRUCTURE HAVING A DIELEC-
Claim 2
Independent Claim
160 words
A METHOD OF FORMING A COMPOSITE DIELECTRIC STRUCTURE WHICH INCLUDES THE STEPS OF: PREPARING FIRST FERRELECTRIC MATERIAL PATICLES HAVING A HIGH DISTINCT TEMPERATURE DEPENDENT DIELECTRIC CONSTANT; FIRING SAID FIRST DIELECTRIC MATERIAL PARTICLES TO SINTER THEM TOGETHER AND FROM A FIRST, DISTINCT LAYER OF SAID FIRST FERROELECTRIC MATERIAL; PREPARING SECOND FERROELECTRIC MATERIAL PARTICLES HAVING A HIGH, DINTINCT TEMPERATURE DEPENDENT DIELECTRIC CONSTANT WHICH DIFFERS FROM THAT OF SAID FIRST FERROELECTRIC MATERIAL PARTICLES; DEPOSITING SAID SECOND FERROELECTRIC MATERIAL PARTICLES ON SAID FIRST, DISTINCT LAYER; AND FIRING SAID SECOND FERROELECTRIC MATERIAL PARTICLES AT A TEMPERATURE AND FOR A PERIOD OF TIME LONG ENOUGH FOR SINTERING SAID SECOND FERROELECTRIC MATERIAL PARTICLES TOGETHER TO FORM A SECOND, DISTINCT LAYER OF SAID SECOND FERROELECTRIC MATERIAL, AND FOR ACHIEVING A SINTERING BETWEEN THE INTERFACES OF THE RESPECTIVE LAYERS WITHOUT DIFFUSION OF THE MATERIAL OF EITHER LAYER THROUGHOUT THE MATERIAL OF THE OTHER LAYER THEREBY FORMING AN INTEGRAL COMPOSITE DIELECTRIC STRUCTURE OF DISCRETE LAYERS, SAID STRUCTURE HAVING A DIELEC-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |