US2921899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation-resistant lubricating greases containing inorganic alkali metal compounds of high alkalinity
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-08-12
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Granted: 1960-01-19
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Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Lorne W Sproule
- 👤 James H Norton
- 👤 Warren C Pattenden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:16
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/06; C10M2201/063; C10M2201/085; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/105; C10M2201/14; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/32; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/105; C10M2209/109; C10M2209/12; C10M2211/00; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/047; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF INHIBITING A LUBRICATING GREASE AGAINST OXIDATION WHEREIN SAID LUBRICATING GREASE COMPRISES A MAJOR PROPORTION OF A LUBRICATING OIL AND A MINOR GREASE THICKENING AMOUNT OF A CALCIUM SOAP THICKENER, WHICH METHOD CONSISTS OF MIXING INTO SAID GREASE AN AMOUNT SUFFICIENT TO INHIBIT OXIDATION OF SAID GREASE OF A GREASEINHIBITOR CONCENTRATE COMPRISING ABOUT 15 TO 80 WT. PERCENT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TRISODIUM PHOSPHATE AND LITHIUM HYDROXIDE AND ABOUT 1 TO 25 WT. PERCENT OF AN ALKALI METAL SOAP OF C12 TO C30 FATTY ACID AND A DISPERSANT PROPORTION OF A MINERAL LUBRICATING OIL.
Claim 2
Independent Claim
101 words
A METHOD OF INHIBITING A LUBRICATING GREASE AGAINST OXIDATION WHEREIN SAID LUBRICATING GREASE COMPRISES A MAJOR PROPORTION OF A LUBRICATING OIL AND A MINOR GREASE THICKENING AMOUNT OF A CALCIUM SOAP THICKENER, WHICH METHOD CONSISTS OF MIXING INTO SAID GREASE AN AMOUNT SUFFICIENT TO INHIBIT OXIDATION OF SAID GREASE OF A GREASEINHIBITOR CONCENTRATE COMPRISING ABOUT 15 TO 80 WT. PERCENT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TRISODIUM PHOSPHATE AND LITHIUM HYDROXIDE AND ABOUT 1 TO 25 WT. PERCENT OF AN ALKALI METAL SOAP OF C12 TO C30 FATTY ACID AND A DISPERSANT PROPORTION OF A MINERAL LUBRICATING OIL.
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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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |