US2833634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic antioxidants and their use
Assignee: Ethyl Corp
•
Filing: 1953-01-26
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Granted: 1958-05-06
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Expires: 1973-01-26
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/188; C10L1/1881; C10L1/19; C10L1/22; C10L1/222; C10L1/223
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
A LEADED OLEFINIC GASOLINE CONTAINING ABOUT 0.005 TO ABOUT 0.01 PERCENT BY WEIGHT OF A MIXTURE OF TWO PARTS OF N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE WITH ONE PART OF A SYNERGIST SELECTED FROM THE CLASS OF ASCORBIC ACID AND ASCORYBL PALMITATE.
References Cited (Backward Citations)
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US2462663A
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US2462664A
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US2553441A
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US2521856A
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US2633415A
Cited
US2607745A
Cited
US2679459A
Cited
US2741563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |