US2691632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil compositions resistant to oxidation
Assignee: California Research LLC
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Filing: 1952-03-01
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Granted: 1954-10-12
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Expires: 1972-03-01
Abstract
No abstract record available.
Inventors
- 👤 Oliver L Harle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C11; C11B; C11B5/00; C11B5/0092; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN OIL COMPOSITION HAVING IMPROVED STABILITY TOWARD OXIDATION, WHICH COMPOSITION IS MADE UP OF A NORMALLY OXIDIZABLE OIL TOGETHER WITH FROM ABOUT 0.03 TO 10 PER CENT BY WEIGHT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TETRAMETHYL THIOURAM DISULFIDE AND DI-SEC.-BUTYL XANTHOGEN AND FROM ABOUT 0.05 TO 5 PER CENT BY WEIGHT OF PHENYL A-NAPHTHYLAMINE.
Claim 2
Dependent Claim
59 words
AN OIL COMPOSITION HAVING IMPROVED STABILITY TOWARD OXIDATION, WHICH COMPOSITION IS MADE UP OF A NORMALLY OXIDIZABLE OIL TOGETHER WITH FROM ABOUT 0.03 TO 10 PER CENT BY WEIGHT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TETRAMETHYL THIOURAM DISULFIDE AND DI-SEC.-BUTYL XANTHOGEN AND FROM ABOUT 0.05 TO 5 PER CENT BY WEIGHT OF PHENYL A-NAPHTHYLAMINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |