US2937993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High melting point synthetic base grease containing an alkali metal salt of a dicarboxylic acid
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-09-23
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Granted: 1960-05-24
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Warren C Pattenden
- 👤 Lorne W Sproule
- 👤 James H Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:17
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/06; C10M2201/063; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2229/00; C10M2229/04; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2020/00; C10N2020/01; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR PREPARING A LUBRICATING GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND ABOUT 5 TO 40 WT. PERCENT OF AN ALKALI METAL SALT OF A DICARBOXYLIC ACID WHICH COMPRISES HEATING A MIXTURE OF AN ALKALI METAL BASE, LUBRICATING OIL, AN ALIPHATIC DICARBOXYLIC ACID CONTAINING FROM 2 TO 22 CARBON ATOMS PER MOLECULE AND A MONOHYDRIC ALIPHATIC ALCOHOL HAVING FROM 1 TO 22 CARBON ATOMS PER MOLECULE, SAID HEATING TAKING PLACE AT A TEMPERATURE IN THE RANGE OF 300* TO 500* F. FOR A TIME SUFFICIENTLY TO FORM SAID METAL SALT AND TO EVAPORATE SAID ALCOHOL.
Claim 2
Dependent Claim
100 words
A PROCESS FOR PREPARING A LUBRICATING GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND ABOUT 5 TO 40 WT. PERCENT OF AN ALKALI METAL SALT OF A DICARBOXYLIC ACID WHICH COMPRISES HEATING A MIXTURE OF AN ALKALI METAL BASE, LUBRICATING OIL, AN ALIPHATIC DICARBOXYLIC ACID CONTAINING FROM 2 TO 22 CARBON ATOMS PER MOLECULE AND A MONOHYDRIC ALIPHATIC ALCOHOL HAVING FROM 1 TO 22 CARBON ATOMS PER MOLECULE, SAID HEATING TAKING PLACE AT A TEMPERATURE IN THE RANGE OF 300* TO 500* F. FOR A TIME SUFFICIENTLY TO FORM SAID METAL SALT AND TO EVAPORATE SAID ALCOHOL.
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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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |