US2759828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of fats and oils with-co-r derivatives of 1, 2, 4-trihydroxybenzene and preparation of related compounds
Assignee: Eastman Kodak Co
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Filing: 1952-08-02
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Granted: 1956-08-21
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Expires: 1972-08-02
Abstract
No abstract record available.
Inventors
- 👤 Bell Alan
- 👤 M B Knowles
- 👤 Clarence E Tholstrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:08
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
STABILIZED FATS AND FATTY OILS CONTAINING FROM ABOUT 0.001 PERCENT TO ABOUT 0.1 PERCENT BY WEIGHT OF A NUCLEARLY SUBSTITUTED -CO-R DERIVATIVE OF 1,2.4 - TRIHYDROXYBENZENE HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
30 words
STABILIZED FATS AND FATTY OILS CONTAINING FROM ABOUT 0.001 PERCENT TO ABOUT 0.1 PERCENT BY WEIGHT OF A NUCLEARLY SUBSTITUTED -CO-R DERIVATIVE OF 1,2.4 - TRIHYDROXYBENZENE HAVING THE FOLLOWING FORMULA:
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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |