US2462871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating agent
Assignee: Union Carbide Corp
•
Filing: 1946-05-18
•
Granted: 1949-03-01
•
Expires: 1966-05-18
Abstract
No abstract record available.
Inventors
- 👤 Augustus B Kinzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:16
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/076; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119643A
Cited
US2249336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |