US2903346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic substituted propionitrile
Assignee: Ethyl Corp
•
Filing: 1957-12-18
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Granted: 1959-09-08
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Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Coffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:16
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/228; C10L1/2286; C07; C07C; C07C37/00; C07C37/64; C07C37/66; C07C45/00; C07C45/45; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C08; C08K; C08K5/00; C08K5/16; C08K5/315; C11; C11B; C11B5/00; C11B5/0042
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
23 words
2. B-(3,5-DI-TERT-BUTYL-4-HYDROXYPHENYL) PROPIONITRILE, 3.GASOLINE NORMALLY TENDING TO UNDERGO OXIDATIVE DETERIORATION, CONTAINING, GAS AN ANTIOXIDANT, A SMALL AMOUNT OF THE COMPOUND OF CLAIM 2.
References Cited (Backward Citations)
US2745882A
Cited
US2792427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |