US2629693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Shell Development Co
•
Filing: 1947-07-01
•
Granted: 1953-02-24
•
Expires: 1967-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert C Barton
- 👤 Roland F Bergstrom
- 👤 Jacobus M Plantfeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:25
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/025; C10M2207/026; C10M2207/027; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/20; C10M2207/22; C10M2207/24; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2209/103; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/024; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/04; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/14; C10M2215/16; C10M2215/20; C10M2215/206; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/085; C10M2219/087; C10M2219/089; C10M2219/09; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/065; C10M2223/08; C10M2223/10; C10M2223/12; C10M2227/00; C10M2227/08; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A FINISHED LIQUID LUBRICATING COMPOSITION FOR USE IN ENGINES OPERATING ON HIGH SULFUR FUEL COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL; A CALCIUM SALT OF PETROLEUM SULFONIC ACID IN AN AMOUNT OF FROM ABOUT 1% TO ABOUT 4% CALCULATED AS SULFATE ASH AND MINOR AMOUNTS OF FROM 0.1% TO ABOUT 1% BY WEIGHT OF PHENYL ALPHA NAPHTHYLAMINE AND 2.6 DITERTIARY BUTYL-4METHYL PHENOL.
Claim 2
Dependent Claim
64 words
A FINISHED LIQUID LUBRICATING COMPOSITION FOR USE IN ENGINES OPERATING ON HIGH SULFUR FUEL COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL; A CALCIUM SALT OF PETROLEUM SULFONIC ACID IN AN AMOUNT OF FROM ABOUT 1% TO ABOUT 4% CALCULATED AS SULFATE ASH AND MINOR AMOUNTS OF FROM 0.1% TO ABOUT 1% BY WEIGHT OF PHENYL ALPHA NAPHTHYLAMINE AND 2.6 DITERTIARY BUTYL-4METHYL PHENOL.
References Cited (Backward Citations)
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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) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |