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Patent US3201242A successfully refreshed from Google Patents.
US3201242A
Expired / Lapsed
US
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Accelerators for reversal color development
Assignee: Eastman Kodak Co
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Filing: 1961-09-11
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Granted: 1965-08-17
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Judith A Schwan
- 👤 John R Dann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:27
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S430/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PHOTOGRAPHIC COLOR DEVELOPER COMPRISING AN AQUEOUS ALKALINE SOLUTION OF AN ARYLENEDIAMINE COLOR DEVELOPER AND A NON-POLYMERIC COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
27 words
A PHOTOGRAPHIC COLOR DEVELOPER COMPRISING AN AQUEOUS ALKALINE SOLUTION OF AN ARYLENEDIAMINE COLOR DEVELOPER AND A NON-POLYMERIC COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL 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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |