US2529523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral lubricating oil composition
Assignee: Sinclair Refining Co
•
Filing: 1947-04-29
•
Granted: 1950-11-14
•
Expires: 1967-04-29
Abstract
No abstract record available.
Inventors
- 👤 Franklin M Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:18
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/08; C10M135/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A LIBRICATING COMPOSITION COMPRISING A MINERAL OIL BASE AND BLENDED THEREWITH, IN A PORPORTION ADEQUATE TO IMPART A DETERGENT PROPERTY TO THE COMPOSITION, A MINERAL OIL CONCENTRATE OF COMPOUNDS CONFORMING TO THE FORMULA (RCOCH2-SO3)NM WHERE R REPRESENTS ALKARYL RADICALS DERIVED FROM A MINERAL OIL CONTAINING AROMATIC HYDROCARBONS HAVING ALKYL SIDE CHAINS OF FROM ABOUT 10 TO ABOUT 26 CARBON ATOMS, N IS 1 OR 2 AND M IS FROM THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS.
Claim 2
Dependent Claim
79 words
A LIBRICATING COMPOSITION COMPRISING A MINERAL OIL BASE AND BLENDED THEREWITH, IN A PORPORTION ADEQUATE TO IMPART A DETERGENT PROPERTY TO THE COMPOSITION, A MINERAL OIL CONCENTRATE OF COMPOUNDS CONFORMING TO THE FORMULA (RCOCH2-SO3)NM WHERE R REPRESENTS ALKARYL RADICALS DERIVED FROM A MINERAL OIL CONTAINING AROMATIC HYDROCARBONS HAVING ALKYL SIDE CHAINS OF FROM ABOUT 10 TO ABOUT 26 CARBON ATOMS, N IS 1 OR 2 AND M IS FROM THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS.
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) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |