Patent US4648124A successfully refreshed from Google Patents.
Patent US3277155A successfully refreshed from Google Patents.
US3277155A
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US
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Monofluoro-beta-ketoacetanilide couplers for color photography
Assignee: Eastman Kodak Co
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Filing: 1960-08-24
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Granted: 1966-10-04
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Expires: 1980-08-24
Abstract
No abstract record available.
Inventors
- 👤 Loria Anthony
- 👤 Ilmari F Salminen
- 👤 Weissberger Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
9 words
THE PROCESS FOR PRODUCING A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
9 words
THE PROCESS FOR PRODUCING A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
44 words
THE PROCESS FOR PRODUCING ETHYL-A-BENZOYL-A-FLUORO ACETATE COMPRISING THE STEPS OF ABSORBING PERCHLORYL FLUORIDE IN METHYL ALCOHOL AT -20*C. AND ADDING TO THIS SOLUTION HELD AT A TEMPERATURE OF FROM -20*C. TO -45*C. A SOLUTION PREPARED BY REACTING SODIUM METHOXIDE IN METHYL ALCOHOL WITH ETHYL-A-BENZOYLACETATE.
Claim 4
Dependent Claim
44 words
THE PROCESS FOR PRODUCING ETHYL-A-BENZOYL-A-FLUORO ACETATE COMPRISING THE STEPS OF ABSORBING PERCHLORYL FLUORIDE IN METHYL ALCOHOL AT -20*C. AND ADDING TO THIS SOLUTION HELD AT A TEMPERATURE OF FROM -20*C. TO -45*C. A SOLUTION PREPARED BY REACTING SODIUM METHOXIDE IN METHYL ALCOHOL WITH ETHYL-A-BENZOYLACETATE.
Claim 5
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 6
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
FR991453A
Cited
DE934229C
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US2728658A
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US2744933A
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US2802855A
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US2772162A
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US2897079A
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US2895826A
Cited
US2941002A
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US2953576A
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US3030408A
Cited
US3077403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |