US3782958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass showing electrical switching phenomena
Assignee: United States Department of the Air Force
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Filing: 1972-02-07
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Granted: 1974-01-01
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Expires: 1992-02-07
Abstract
Abstract A GLASS COMPOSITON IS PROVIDED THAT CONSISTS ESSENTIALLY OF AN ALKALI OR ALKALINE EARTH METAL BORATE CONTAINING IRON. THE GLASS IS USEFUL IN FACRICATING MEMORY SWITCHING DEVICES THAT CAN BE USED, FOR EXAMPLE, IN DIGITAL EQUIPMENT AND DISPLAY UNITS, AND THERMISTORS.
Inventors
- 👤 A Bishay
- 👤 Hamamsy M El
- 👤 M Omar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:24
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/14; C03C3/00; C03C3/12; C03C3/14; H; H10; H10N; H10N70/00; H10N70/011; H10N70/021; H10N70/20; H10N70/801; H10N70/881; H10N70/883
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |