US2452712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing hydrocarbon and the like
Assignee: Texaco Inc
•
Filing: 1946-05-22
•
Granted: 1948-11-02
•
Expires: 1966-05-22
Abstract
No abstract record available.
Inventors
- 👤 Harold V Atwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:57
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; C07C1/00; C07C1/02; C07C1/04; C07C1/0455; C07C29/153; C07C29/156
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1741306A
Cited
GB278353A
Cited
US2257293A
Cited
GB503622A
Cited
US2406864A
Cited
US2369106A
Cited
US2393909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |