US2898296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a grease containing metal salt of mono and dicarboxylic acids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-08-23
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Granted: 1959-08-04
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Expires: 1976-08-23
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
2026-10-27 19:23
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2229/00; C10M2229/04; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/02; C10N2020/00; C10N2020/01; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD OF PREPARING A LUBRICATING GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND A THICKENING AMOUNT OF A THICKENER COMPRISING ABOUT 20 TO 80 WT. PERCENT OF A METAL SOAP OF A FATTY ACID AND ABOUT 80 TO 20 WT. PERCENT OF A METAL SALT OF A DICARBOXYLIC ACID, WHICH COMPRISES HEATING A MIXTURE OF (1) A FATTY ACID HAVING ABOUT 6 TO 30 CARBON ATOMS PER MOLECULE, (2) A DIESTER OF AN ALIPHATIC DICARBOXYLIC ACID AND A MONOHYDRIC ALIPHATIC ALCOHOL, SAID DIESTER CONTAINING ABOUT 4 TO 64 CARBON ATOMS PER MOLECULE, AND (3) A METAL BASE IN A LUBRICATING OIL MENSTRUUM, FOR A TIME AND TEMPERATURE SUFFICIENT TO FORM A METAL SALT OF SAID DICARBOXYLIC ACID AND METAL SOAP OF SAID FATTY ACID, AND TO DRIVE OF SUBSTANTIALLY ALL THE ALCOHOL WHICH FORMS DURING SAID REACTION THEN COOLING SAID MIXTURE TO OBTAIN SAID GREASE COMPOSITION.
Claim 2
Independent Claim
150 words
A METHOD OF PREPARING A LUBRICATING GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND A THICKENING AMOUNT OF A THICKENER COMPRISING ABOUT 20 TO 80 WT. PERCENT OF A METAL SOAP OF A FATTY ACID AND ABOUT 80 TO 20 WT. PERCENT OF A METAL SALT OF A DICARBOXYLIC ACID, WHICH COMPRISES HEATING A MIXTURE OF (1) A FATTY ACID HAVING ABOUT 6 TO 30 CARBON ATOMS PER MOLECULE, (2) A DIESTER OF AN ALIPHATIC DICARBOXYLIC ACID AND A MONOHYDRIC ALIPHATIC ALCOHOL, SAID DIESTER CONTAINING ABOUT 4 TO 64 CARBON ATOMS PER MOLECULE, AND (3) A METAL BASE IN A LUBRICATING OIL MENSTRUUM, FOR A TIME AND TEMPERATURE SUFFICIENT TO FORM A METAL SALT OF SAID DICARBOXYLIC ACID AND METAL SOAP OF SAID FATTY ACID, AND TO DRIVE OF SUBSTANTIALLY ALL THE ALCOHOL WHICH FORMS DURING SAID REACTION THEN COOLING SAID MIXTURE TO OBTAIN SAID GREASE COMPOSITION.
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |