Patent US3328301A successfully refreshed from Google Patents.
US3328301A
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Antioxidants for lubricating oils
Assignee: Eastman Kodak Co
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Filing: 1965-09-23
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Granted: 1967-06-27
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Expires: 1985-09-23
Abstract
No abstract record available.
Inventors
- 👤 John W Thompson
- 👤 Gerald R Lappin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:41
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/20; C10M135/22; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/283; C10M2207/30; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/102; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10N; C10N2040/00; C10N2040/02; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS FOR IMPROVING THE OXIDATION RESISTANCE OF MINERAL AND SYNTHETIC ESTER TYPE LUBRICATING OILS WHICH COMPRISES INCORPORATING IN THE OIL AS AN ANTIOXIDANT A 2,5DISUBSTITUTED THIO-P-BENZOQUINONE HAVING THE STRUCTURE
Claim 2
Dependent Claim
30 words
A PROCESS FOR IMPROVING THE OXIDATION RESISTANCE OF MINERAL AND SYNTHETIC ESTER TYPE LUBRICATING OILS WHICH COMPRISES INCORPORATING IN THE OIL AS AN ANTIOXIDANT A 2,5DISUBSTITUTED THIO-P-BENZOQUINONE HAVING THE STRUCTURE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |