US2920181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc deoxidized metal deposition
Assignee: Union Carbide Corp
•
Filing: 1956-05-04
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Granted: 1960-01-05
•
Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 Harry E Rockefeller
- 👤 Jack L Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/173
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB143331A
Cited
US1347184A
Cited
US2003167A
Cited
GB546961A
Cited
US2427350A
Cited
US2669640A
Cited
US2727125A
Cited
US2803740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |