Patent US3382053A successfully refreshed from Google Patents.
US3382053A
Expired / Lapsed
US
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Tantalum films of unique structure
Assignee: AT&T Inc
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Filing: 1965-04-05
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Granted: 1968-05-07
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Altman Carl
- 👤 Read Mildred Hoogstraat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:07
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/006; C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; H01B; H01B1/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3275915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |