US2912458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-2-methyl-2-norcamphanemethanol alkane-dioates as synthetic ester lubricants
Assignee: Eastman Kodak Co
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Filing: 1958-01-24
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Granted: 1959-11-10
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Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Kent C Brannock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A SYNTHETIC LUBRICANT COMPRISING AN ESTER HAVING THE FORMULA:
Claim 2
Dependent Claim
9 words
A SYNTHETIC LUBRICANT COMPRISING AN ESTER HAVING THE FORMULA:
References Cited (Backward Citations)
US2557136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |