Patent US3461978A successfully refreshed from Google Patents.
US3565618A
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Photographic colloid transfer facilitated by enzyme treatment
Assignee: Eastman Kodak Co
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Filing: 1966-07-05
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Granted: 1971-02-23
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Expires: 1986-07-05
Abstract
Abstract COLLOID TRANSFER OF A PHOTOGRAPHIC IMAGE FROM AN IMAGE BEARING PHOTOGRPAHIC ELEMENT HAVING A PROTEINACEOUS BINDER IS ACCOMPLISHED BY TREATING THE PROTEIN BINDER WITH AN ENZYME SUCH AS A PROTEINASE TO SOFTEN A THIN LAYER WHICH IS THEN TRANSFERRED BY CONTACTING AGAINST A RECEIVING SUPPORT. SUBSEQUENT TRANSFERS CAN BE MADE BY REPEATING THE TREATMENT.
Inventors
- 👤 Claude M Marechal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:52
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/12; G03C5/00; G03C5/26; G03C5/29; G03C5/315; G03C5/40
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |