US2900342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants
Assignee: Pure Oil Co
•
Filing: 1956-12-18
•
Granted: 1959-08-18
•
Expires: 1976-12-18
Abstract
No abstract record available.
Inventors
- 👤 Allan A Manteuffel
- 👤 George R Cook
- 👤 Warren W Cortiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:49
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38; C07D303/40; C07D303/42; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A LUBRICATING OIL COMPOSITION, EXHIBITING LOADCARRYING ABILITY, COMPRISING A MINERAL LUBRICATING OIL AND FROM ABOUT 1.0 TO ABOUT 50.0 WEIGHT PERCENT OF AN EPOXIDIZED ALKYL ESTER OF AN UNSATURATED FATTY ACID, SAID ESTERS HAVING THE GENERAL FORMULS
Claim 2
Dependent Claim
37 words
A LUBRICATING OIL COMPOSITION, EXHIBITING LOADCARRYING ABILITY, COMPRISING A MINERAL LUBRICATING OIL AND FROM ABOUT 1.0 TO ABOUT 50.0 WEIGHT PERCENT OF AN EPOXIDIZED ALKYL ESTER OF AN UNSATURATED FATTY ACID, SAID ESTERS HAVING THE GENERAL FORMULS
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |