US2682474A
Expired / Lapsed
US
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Propenyl derivatives of alkoxyphenols as antioxidants
Assignee: Eastman Kodak Co
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Filing: 1951-05-31
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Granted: 1954-06-29
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Expires: 1971-05-31
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
2026-11-06 06:21
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/742; A23B2/746; C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
8 words
PROPENYL DERIVATIVES OF P-ALKOXYPHENOLS HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
8 words
PROPENYL DERIVATIVES OF P-ALKOXYPHENOLS HAVING THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
24 words
STABILIZED FATS AND OILS CONTAINING FROM ABOUT 0.001% TO ABOUT 1.0% BY WEIGHT OF A PROPENYL DERIVATIVE OF P-HYDROXYANISOLE AS DEFINED IN CLAIM 1.
References Cited (Backward Citations)
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USRE23239E
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US1792716A
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US2064610A
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US2296363A
Cited
FR934955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |