US3236772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1962-07-02
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Granted: 1966-02-22
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Younghouse
- 👤 Detweiler William Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:40
CPC Classifications
C; C07; C07C; C07C323/00; C07F; C07F7/00; C07F7/22; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/02; C10M2227/00; C10M2227/08; C10M2227/083; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A LUBRICATING COMPOSITION HAVING IMPROVED OXIDATION STABILITY AT HIGH TEMPERATURES COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL CONTAINING 0.5 TO 20.0 WT. PERCENT, BASED ON THE WEIGHT OF SAID COMPOSITION, OF AN OIL-SOLUBLE ALKALINE EARTH METAL ALKYL PHENATE SULFIDE LUBRICATING OIL DETERGENT ADDITIVE, AND AN AMOUNT WITHIN THE RANGE OF 0.2 TO 25 WT. PERCENT, BASED ON THE WEIGHT OF SAID PHENATE SULFIDE OF AN OIL-SOLUBLE ORGANO-TIN COMPOUND WHICH IMPROVES THE OXIDATION STABILITY OF SAID COMPOSITION AND HAS THE GENERAL FORMULA:
Claim 2
Dependent Claim
82 words
A LUBRICATING COMPOSITION HAVING IMPROVED OXIDATION STABILITY AT HIGH TEMPERATURES COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL CONTAINING 0.5 TO 20.0 WT. PERCENT, BASED ON THE WEIGHT OF SAID COMPOSITION, OF AN OIL-SOLUBLE ALKALINE EARTH METAL ALKYL PHENATE SULFIDE LUBRICATING OIL DETERGENT ADDITIVE, AND AN AMOUNT WITHIN THE RANGE OF 0.2 TO 25 WT. PERCENT, BASED ON THE WEIGHT OF SAID PHENATE SULFIDE OF AN OIL-SOLUBLE ORGANO-TIN COMPOUND WHICH IMPROVES THE OXIDATION STABILITY OF SAID COMPOSITION AND HAS THE GENERAL FORMULA:
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |