Patent US1901645A successfully refreshed from Google Patents.
Patent US3728113A successfully refreshed from Google Patents.
US3728113A
Expired / Lapsed
US
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Selective transfer system and compounds for employment therein
Assignee: Eastman Kodak Co
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Filing: 1971-07-06
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Granted: 1973-04-17
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Expires: 1991-07-06
Abstract
Abstract A PHOTOGRAPHIC ELEMENT IS PROVIDED IN HICH A CLEAVABLE COMPOUND IS EMPLOYED TO EFECT THE IMAGEWISE ELIMINATION OF A SELECTED CHEMICAL MOIETY, SUCH AS A DYE, A SILVER HALIDE SOLVENT, AN ANTIFOGGANT, A FIXING AGENT, A TONER, A HARDENER, A SILVER COMPLEXING AGENT, A FOGGING AGENT, A COUPLER, A SENSITIZER, A DESENSITIZER, ADEVELOPER, AN OXIDIZING AGENT, ETC COLOR DIFFUSION TRANSFER PROCESSES AND FILM UNITS EMPLOYING SUCH CLEAVABLE COMPOUNDS ARE ALSO DESCRIBED.
Inventors
- 👤 R Becker
- 👤 J Ford
- 👤 D Fields
- 👤 D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:53
CPC Classifications
C; C07; C07D; C07D221/00; C07D221/02; C07D221/04; C07D221/18; G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; G03C8/00; G03C8/02; G03C8/08; G03C8/10
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |