Patent US1158844A successfully refreshed from Google Patents.
Patent US2524563A successfully refreshed from Google Patents.
US2524563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: Shell Development Co
•
Filing: 1946-10-08
•
Granted: 1950-10-03
•
Expires: 1966-10-08
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Evans
- 👤 Whetstone Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/20; C10M107/22; C10M107/24; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/11; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/084; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/02; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/20; C10N2040/22; C10N2040/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A LUBRICATING GREASE COMPRISING, AS SUBSTANTIALLY THE SOLE LUBRICANT PRESENT, A MAJOR AMOUNT OF A LIQUID POLYMERIZED ESTER OF A SATURATED MONOCARBOXYLIC ACID HAVING BETWEEN 5 AND 12 CARBON ATOMS AND AN UNSATURATED ALIPHATIC MONOHYDRIC ALCOHOL HAVING BETWEEN 3 AND 8 CARBON ATOMS, SAID POLYMERIZED ESTER HAVING A MINIMUM BOILING POINT ABOVE 100*C. AT 2 MM. MERCURY PRESSURE, AND A MINOR AMOUNT OF AN ALKALI METAL SOAP SUFFICIENT TO FORM A UNIFORM GREASE STRUCTURE.
Claim 2
Dependent Claim
74 words
A LUBRICATING GREASE COMPRISING, AS SUBSTANTIALLY THE SOLE LUBRICANT PRESENT, A MAJOR AMOUNT OF A LIQUID POLYMERIZED ESTER OF A SATURATED MONOCARBOXYLIC ACID HAVING BETWEEN 5 AND 12 CARBON ATOMS AND AN UNSATURATED ALIPHATIC MONOHYDRIC ALCOHOL HAVING BETWEEN 3 AND 8 CARBON ATOMS, SAID POLYMERIZED ESTER HAVING A MINIMUM BOILING POINT ABOVE 100*C. AT 2 MM. MERCURY PRESSURE, AND A MINOR AMOUNT OF AN ALKALI METAL SOAP SUFFICIENT TO FORM A UNIFORM GREASE STRUCTURE.
References Cited (Backward Citations)
US2123641A
Cited
US2164188A
Cited
US2058342A
Cited
US2273891A
Cited
US2293868A
Cited
US2330773A
Cited
US2374081A
Cited
US2441023A
Cited
US2450221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |