Patent US3328335A successfully refreshed from Google Patents.
US3328335A
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Lubricating oils containing complex zinc salts
Assignee: Mobil Oil AS
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Filing: 1964-08-31
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Granted: 1967-06-27
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Expires: 1984-08-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Jolie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:08
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN IMPROVED LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING IN ADMIXTURE THEREWITH A MINOR AMOUNT, SUFFICIENT TO IMPROVE THE OXIDATIVE STABILITY THEREOF, OF A REACTION PRODUCT OF A REACTION BETWEEN A ZINC BIS (C4-ALKYL) DITHIOPHOSPHATE AND ZINC ACETATE SAID REACTION TAKING PLACE IN THE PRESENCE OF WATER, WHEREIN THE REACTION MIXTURE IS HEATED TO ABOUT 80* TO 160*C.
Claim 2
Dependent Claim
63 words
AN IMPROVED LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING IN ADMIXTURE THEREWITH A MINOR AMOUNT, SUFFICIENT TO IMPROVE THE OXIDATIVE STABILITY THEREOF, OF A REACTION PRODUCT OF A REACTION BETWEEN A ZINC BIS (C4-ALKYL) DITHIOPHOSPHATE AND ZINC ACETATE SAID REACTION TAKING PLACE IN THE PRESENCE OF WATER, WHEREIN THE REACTION MIXTURE IS HEATED TO ABOUT 80* TO 160*C.
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) | 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 |