Patent US2697693A successfully refreshed from Google Patents.
US2697693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of lithium hydroxy carboxylic acid soap greases
Assignee: Standard Oil Co
•
Filing: 1951-11-05
•
Granted: 1954-12-21
•
Expires: 1971-11-05
Abstract
No abstract record available.
Inventors
- 👤 George V Browning
- 👤 Lawrence C Brunstrum
- 👤 Jr Wilbur L Hayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:51
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/10; C10M2201/102; C10M2201/103; C10M2205/00; C10M2207/00; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF PRODUCING A GREASE COMPRISING A LUBRICANT BASE AND A LITHIUM SOAP OF AN ORGANIC ACID SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROGENATED CASTOR OIL AND HYDROXY FATTY ACIDS OF AT LEAST 12 CARBON ATOMS WHEREIN THE HYDROXYL GROUP IS SEPARATED FROM THE CARBOXYL GROUP BY AT LEAST ONE CARBON ATOM, WHICH METHOD COMPRISES SUBJECTING A MIXTURE COMPRISING LUBRICANT BASE, LITHIUM HYDROXY SOAP CONSTITUENTS AND AT LEAST ABOUT 1 PERCENT OF WATER TO A TEMPERATURE OF AT LEAST ABOUT 275* F. AND SUPERATMOSPHERIC PRESSURE, AGITATING SAID MIXTURE, RELIEVING THE PRESSURE AFTER THE MIXTURE HAS REACHED SAID TEMPERATURE BY VENTING THE STEAM THEREFROM, AND MAINTAINING SAID MIXTURE AT SUBSTANTIALLY SAID TEMPERATURE WHILE VENTING SAID STEAM.
Claim 2
Independent Claim
117 words
A METHOD OF PRODUCING A GREASE COMPRISING A LUBRICANT BASE AND A LITHIUM SOAP OF AN ORGANIC ACID SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROGENATED CASTOR OIL AND HYDROXY FATTY ACIDS OF AT LEAST 12 CARBON ATOMS WHEREIN THE HYDROXYL GROUP IS SEPARATED FROM THE CARBOXYL GROUP BY AT LEAST ONE CARBON ATOM, WHICH METHOD COMPRISES SUBJECTING A MIXTURE COMPRISING LUBRICANT BASE, LITHIUM HYDROXY SOAP CONSTITUENTS AND AT LEAST ABOUT 1 PERCENT OF WATER TO A TEMPERATURE OF AT LEAST ABOUT 275* F. AND SUPERATMOSPHERIC PRESSURE, AGITATING SAID MIXTURE, RELIEVING THE PRESSURE AFTER THE MIXTURE HAS REACHED SAID TEMPERATURE BY VENTING THE STEAM THEREFROM, AND MAINTAINING SAID MIXTURE AT SUBSTANTIALLY SAID TEMPERATURE WHILE VENTING SAID STEAM.
References Cited (Backward Citations)
US2397956A
Cited
US2417495A
Cited
US2450254A
Cited
US2444720A
Cited
US2450219A
Cited
US2450255A
Cited
US2450220A
Cited
US2483282A
Cited
US2434539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |