US3567441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographer hardener-developer compositions
Assignee: Eastman Kodak Co
•
Filing: 1968-01-04
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Granted: 1971-03-02
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Expires: 1988-01-04
Abstract
Abstract COMPOSITIONS COMPRISING A CHELATE COMPOUND INORGANIC DEVELOPING AGENT FOR SILVER HALIDE AND AN ORGANIC ALDEHYDE HARDENING AGENT FOR PHOTOGRAPHIC HYDROPHILIC COLLOID LAYERS ARE USED TO ADVANTAGE TO COMBINE IN A SINGLE PROCESS STEP THE HARDENING AND DEVELOPING STEPS IN COLOR PROCESSES.
Inventors
- 👤 Howard W Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:30
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |