Patent US2540093A successfully refreshed from Google Patents.
US2540093A
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Thienylthiolesters in lubricating compositions
Assignee: ExxonMobil Oil Corp
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Filing: 1948-07-21
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Granted: 1951-02-06
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Expires: 1968-07-21
Abstract
No abstract record available.
Inventors
- 👤 John W Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:20
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AN IMPROVED MINERAL OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL OIL AND IN ADMIXTURE THEREWITH A MINOR PROPORTION, LESS THAN ABOUT 10 PER CENT BY WEIGHT BUT SUFFICIENT TO STABILIZE SAID OIL AGAINST THE DELETERIOUS EFFECTS OF OXIDATION, OF A COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
46 words
AN IMPROVED MINERAL OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL OIL AND IN ADMIXTURE THEREWITH A MINOR PROPORTION, LESS THAN ABOUT 10 PER CENT BY WEIGHT BUT SUFFICIENT TO STABILIZE SAID OIL AGAINST THE DELETERIOUS EFFECTS OF OXIDATION, OF A COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2073841A
Cited
US2160293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |