US2644792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounded lubricating oil
Assignee: Standard Oil Development Co
•
Filing: 1949-12-23
•
Granted: 1953-07-07
•
Expires: 1969-12-23
Abstract
No abstract record available.
Inventors
- 👤 Max W Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/043; C10M2201/06; C10M2201/062; C10M2203/00; C10M2203/10; C10M2203/108; C10M2205/00; C10M2205/16; C10M2205/18; C10M2205/20; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/28; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2040/25; C10N2040/252; C10N2040/253; C10N2050/00; C10N2050/10; C10N2060/00; C10N2060/04; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A MINERAL OIL CONTAINING A DETERGENT QUANTITY OF PRODUCT OBTAINED BY REACTING ONE MOLECULAR PORTION OF A PHOSPHORUS SULFIDE WITH 1 TO 10 MOLECULAR PROPORTIONS OF A HYDROCARBON AT ABOUT 200 TO 600* F. AND TREATING THE ACIDIC REACTION PRODUCT AT ABOUT 100 TO 400 F. WITH AN AMOUNT SUFFICIENT TO NEUTRALIZE THE TITRATABLE ACIDITY OF SUCH REACTION PRODUCT OF AN ORGANIC BASIC REACTION COMPOUND SELECTED FROM THE GROUP CONSISTING OF: (1) FREE BASES OF THE COMPOSITION-
Claim 2
Dependent Claim
77 words
A MINERAL OIL CONTAINING A DETERGENT QUANTITY OF PRODUCT OBTAINED BY REACTING ONE MOLECULAR PORTION OF A PHOSPHORUS SULFIDE WITH 1 TO 10 MOLECULAR PROPORTIONS OF A HYDROCARBON AT ABOUT 200 TO 600* F. AND TREATING THE ACIDIC REACTION PRODUCT AT ABOUT 100 TO 400 F. WITH AN AMOUNT SUFFICIENT TO NEUTRALIZE THE TITRATABLE ACIDITY OF SUCH REACTION PRODUCT OF AN ORGANIC BASIC REACTION COMPOUND SELECTED FROM THE GROUP CONSISTING OF: (1) FREE BASES OF THE COMPOSITION-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |