US2889281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricating composition
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-03-21
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Granted: 1959-06-02
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Expires: 1976-03-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Matuszak
- 👤 Arnold J Morway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:30
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/11; C10M2209/112; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A FLUID SYNTHETIC LIBRICATING COMPOSITION HAVING IMPROVED EXTREME PRESSURE RESISTING CHARACTERISTICS CONSISTING ESSENTIALLY OF (1) A MAJOR PROPORTION OF A LUBRICATING OIL BASE CONSISTING OF (A) 80 TO 99% BY VOLUME OF A DIALKYL ESTER OF A DICARBOXYLIC ACID HAVING THE FORMULA:
Claim 2
Dependent Claim
42 words
A FLUID SYNTHETIC LIBRICATING COMPOSITION HAVING IMPROVED EXTREME PRESSURE RESISTING CHARACTERISTICS CONSISTING ESSENTIALLY OF (1) A MAJOR PROPORTION OF A LUBRICATING OIL BASE CONSISTING OF (A) 80 TO 99% BY VOLUME OF A DIALKYL ESTER OF A DICARBOXYLIC ACID HAVING THE 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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |