US3202891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage variable capacitor with strontium titanate dielectric
Assignee: Verizon Laboratories Inc
•
Filing: 1960-11-30
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Granted: 1965-08-24
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Expires: 1980-11-30
Abstract
No abstract record available.
Inventors
- 👤 Daniel R Frankl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:16
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A NON-LINEAR CAPACITOR COMPRISING FIRST AND SECOND ELECTRODES, A GERMANIUM WAFER, AND A LAYER OF STRONTIUM TITANATE HAVING A THICKNESS OF 1000 ANGSTROMS INTERPOSED BETWEEN AND AFFIXED DIRECTLY TO THE SURFACE OF SAID GERMANIUM WAFER AND TO THE SURFACE OF SAID FIRST ELECTODE, SAID SECOND ELECTRODE BEING AFFIXED TO THE OTHER SURFACE OF SAID SEMICONDUCTOR WAFER.
Claim 2
Dependent Claim
56 words
A NON-LINEAR CAPACITOR COMPRISING FIRST AND SECOND ELECTRODES, A GERMANIUM WAFER, AND A LAYER OF STRONTIUM TITANATE HAVING A THICKNESS OF 1000 ANGSTROMS INTERPOSED BETWEEN AND AFFIXED DIRECTLY TO THE SURFACE OF SAID GERMANIUM WAFER AND TO THE SURFACE OF SAID FIRST ELECTODE, SAID SECOND ELECTRODE BEING AFFIXED TO THE OTHER SURFACE OF SAID SEMICONDUCTOR WAFER.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |