US3540863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of protectively metal coating columbium and columbium - alloy structures
Assignee: GTE Sylvania Inc
•
Filing: 1968-01-22
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Granted: 1970-11-17
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Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Seymour Priceman
- 👤 Lawrence Sama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:02
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/226; C; C22; C22C; C22C27/00; C22C27/02; C22C27/04; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12493; Y10T428/12674; Y10T428/12771; Y10T428/12778; Y10T428/12806; Y10T428/12812; Y10T428/12819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2942970A
Cited
US3314785A
Cited
US3219477A
Cited
US3222161A
Cited
US3350197A
Cited
US3432334A
Cited
US3425116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |