US3203897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium soap grease containing a zinc salt of a dialkyl dithiophosphate
Assignee: Gulf Research and Development Co
•
Filing: 1962-09-20
•
Granted: 1965-08-31
•
Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Henry A Ambrose
- 👤 Paul R Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:51
CPC Classifications
C; C10; C10M; C10M5/00; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2221/00; C10M2221/04; C10M2221/043; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A GREASE COMPOSITION HAVING AN IMPROVED PERFORMANCE LIFE AT A TEMPERATURE ABOVE ABOUT 200%F. COMPRISING A DISPERSION IN ABOUT 50 TO ABOUT 80 PERCENT BY WEIGHT OF A LUBRICATING OIL BASE OF ABOUT 15 TO ABOUT 35 PERCENT BY WEIGHT OF A SODIUM SOAP OF A C18 FATTY ACID AND ABOUT 5 TO ABOUT 15 PERCENT BY WEIGHT OF A ZINC SALT OF A DI-(C6 TO C8 ALKYL) DITHIOPHOSPHORIC ACID, THE WEIGHT RATIO OF THE SODIUM SOAP TO THE ZINC SALT BEING BETWEEN ABOUT 1:1 AND ABOUT 4:1.
Claim 2
Dependent Claim
88 words
A GREASE COMPOSITION HAVING AN IMPROVED PERFORMANCE LIFE AT A TEMPERATURE ABOVE ABOUT 200%F. COMPRISING A DISPERSION IN ABOUT 50 TO ABOUT 80 PERCENT BY WEIGHT OF A LUBRICATING OIL BASE OF ABOUT 15 TO ABOUT 35 PERCENT BY WEIGHT OF A SODIUM SOAP OF A C18 FATTY ACID AND ABOUT 5 TO ABOUT 15 PERCENT BY WEIGHT OF A ZINC SALT OF A DI-(C6 TO C8 ALKYL) DITHIOPHOSPHORIC ACID, THE WEIGHT RATIO OF THE SODIUM SOAP TO THE ZINC SALT BEING BETWEEN ABOUT 1:1 AND ABOUT 4:1.
References Cited (Backward Citations)
US2899388A
Cited
US2364283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |