US2653910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricants
Assignee: Shell Development Co
•
Filing: 1951-02-13
•
Granted: 1953-09-29
•
Expires: 1971-02-13
Abstract
No abstract record available.
Inventors
- 👤 Airs Raymond Spencer
- 👤 David Vernon Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:30
CPC Classifications
C; C10; C10M; C10M5/00; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/06; C10M2201/062; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/105; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/22; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/287; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/044; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/20; C10M2215/202; C10M2219/00; C10M2219/02; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/09; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/06; C10M2223/063; C10M2223/065; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN OLEGINOUS LIBRICATING COMPOSITON COMPRISING A MAJOR AMOUNT OF A LUBRICATING OIL BASE HAVING INCORPORATED THEREIN A MINOR AMOUNT, SUFFICIENT TO PROCIDE THE COMPOSITION WITH EXTREME PRESSURE PROPERTIES, OF AN ORGANIC TRICHALCOGENONE, SELECTED FROM THE CLASS CONSISTING OF 3-CHALOGENONO-4- ARYL - 12 DICHALOCOGENOLE, 3-CHALOCOGENONO-ARYL - 1,2 DICHALCOGENOLE, 3-CHALCOGENONO-4,5 DIARYL-1,2 DICHALOGENOLE 3-CHALCOGENONO-4 ALKOXYARYL-1,2 DICHALCOGENOLE AND 3-CHALCOGENONO-5 ALKOYARYL-1,2 DICHALCOGENOLE, WHEREIN EACH OF THE THE TWO RING CHALCOGEN ATOMS HAS AN ATOMIC NUMBER OF AT LEAST 16 AND WHEREIN EACH ARYL SUBSTITUENT IS A MONI-NUCLEAR ARYL SUBSTITUENT, THE CHALCOGEN ATOMS BEING SELECTED FROM THE GROUP CONSISTING OF SULFUR AND SELENIUM ATOMS.
Claim 2
Dependent Claim
98 words
AN OLEGINOUS LIBRICATING COMPOSITON COMPRISING A MAJOR AMOUNT OF A LUBRICATING OIL BASE HAVING INCORPORATED THEREIN A MINOR AMOUNT, SUFFICIENT TO PROCIDE THE COMPOSITION WITH EXTREME PRESSURE PROPERTIES, OF AN ORGANIC TRICHALCOGENONE, SELECTED FROM THE CLASS CONSISTING OF 3-CHALOGENONO-4- ARYL - 12 DICHALOCOGENOLE, 3-CHALOCOGENONO-ARYL - 1,2 DICHALCOGENOLE, 3-CHALCOGENONO-4,5 DIARYL-1,2 DICHALOGENOLE 3-CHALCOGENONO-4 ALKOXYARYL-1,2 DICHALCOGENOLE AND 3-CHALCOGENONO-5 ALKOYARYL-1,2 DICHALCOGENOLE, WHEREIN EACH OF THE THE TWO RING CHALCOGEN ATOMS HAS AN ATOMIC NUMBER OF AT LEAST 16 AND WHEREIN EACH ARYL SUBSTITUENT IS A MONI-NUCLEAR ARYL SUBSTITUENT, THE CHALCOGEN ATOMS BEING SELECTED FROM THE GROUP CONSISTING OF SULFUR AND SELENIUM ATOMS.
References Cited (Backward Citations)
US2292456A
Cited
US2535705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |