US2385741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrilation of hydrocarbons
Assignee: Sinclair Refining Co
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Filing: 1940-11-15
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Granted: 1945-09-25
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Expires: 1960-11-15
Abstract
No abstract record available.
Inventors
- 👤 John W Teter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/75; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/322; B01J2531/00; B01J2531/10; B01J2531/16; B01J2531/80; B01J2531/84; B01J2531/845; B01J31/00; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2239; B01J37/00; B01J37/16; B01J37/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-09-24 | 1949-03-26 | 1949-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-24 | 1953-03-26 | 1953-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-24 | 1957-03-26 | 1957-09-25 | $7700.00 | Window Closed / Lapsed |