US2948682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formyl triesters of dithiophosphoric acid and lubricating oil compositions containing same
Assignee: Pure Oil Co
•
Filing: 1956-12-24
•
Granted: 1960-08-09
•
Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Gifford W Crosby
- 👤 Allen F Millikan
- 👤 Elmer W Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:52
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OLEAGINOUS LIQUID FROM THE GROUP CONSISTING OF MINERAL OIL, SYNTHETIC SILICONES AND SNYTHETIC DIESTERS, AND A MINOR AMOUNT, SUFFICIENT TO ENHANCE THE ANTIWEAR CHARACTERISTICS OF SAID LIQUID, OF A FORMYL TRIESTER OF DITHIOPHOSPHORIC ACID HAVING THE FORMULA:
Claim 2
Dependent Claim
47 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF AN OLEAGINOUS LIQUID FROM THE GROUP CONSISTING OF MINERAL OIL, SYNTHETIC SILICONES AND SNYTHETIC DIESTERS, AND A MINOR AMOUNT, SUFFICIENT TO ENHANCE THE ANTIWEAR CHARACTERISTICS OF SAID LIQUID, OF A FORMYL TRIESTER OF DITHIOPHOSPHORIC ACID HAVING THE FORMULA:
References Cited (Backward Citations)
US2526497A
Cited
US2531129A
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US2586655A
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US2578652A
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US2632020A
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US2794041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |