Patent US4207192A successfully refreshed from Google Patents.
Patent US3682604A successfully refreshed from Google Patents.
US3682604A
Expired / Lapsed
US
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Memory element and method of making protective coating therefor
Assignee: Bull General Electric NV
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Filing: 1970-06-30
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Granted: 1972-08-08
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Expires: 1990-06-30
Abstract
Abstract AN IMPROVED PROTECTIVE COATING FOR A FILM OF FERROMAGNETIC MATERIAL DEPOSITED ON A CONDUCTIVE CYLINDRICAL SUBSTRATE, WHEREIN THE COATING COMPRISES ON ALLOY OF NICKEL AND TIN CONTAINING BETWEEN 29% AND 37% NICKEL.
Inventors
- 👤 Rene Fernand Victor Girard
- 👤 Hubert Lucien Louis Baton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:17
CPC Classifications
H; H01; H01F; H01F10/00; G; G11; G11B; G11B5/00; G11B5/62; G11B5/72; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12708; Y10T428/12722; Y10T428/12771; Y10T428/12861; Y10T428/12944
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |