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Patent US3271148A successfully refreshed from Google Patents.
US3271148A
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Mordanting of acid dyes
Assignee: Eastman Kodak Co
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Filing: 1962-07-19
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Granted: 1966-09-06
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Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 Keith E Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:23
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/56; G03C1/00; G03C1/76; G03C1/825; G03C1/835; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A PHOTOGRAPHIC COLOR DIFFUSION TRANSFER PROCESS WHEREIN AN ACID DYE IS TRANSFERRED IMAGEWISE BY DIFFUSION TO A MORDANTING RECEPTION LAYER, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS SAID RECEPTION LAYER A LAYER COMPRISING A HYDROPHILIC ORGANIC COLLOID CONTAINING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN FINELY DIVIDED DROPLETS OF A CRYSTALLOIDAL, WATER-IMMISCIBLE, ORGANIC SOLVENT BOILING ABOVE ABOUT 175*C. CONTAINING DISSOLVED THEREIN A NONPOLYMERIC ORGANIC CATIONIC MORDANT FOR SAID ACID DYE AT A RATIO OF SAID MORDANT TO SAID SOLVENT OF ABOUT 1/.25 TO 1/2 BY WEIGHT, SAID MORDANT BEING SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
96 words
IN A PHOTOGRAPHIC COLOR DIFFUSION TRANSFER PROCESS WHEREIN AN ACID DYE IS TRANSFERRED IMAGEWISE BY DIFFUSION TO A MORDANTING RECEPTION LAYER, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS SAID RECEPTION LAYER A LAYER COMPRISING A HYDROPHILIC ORGANIC COLLOID CONTAINING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN FINELY DIVIDED DROPLETS OF A CRYSTALLOIDAL, WATER-IMMISCIBLE, ORGANIC SOLVENT BOILING ABOVE ABOUT 175*C. CONTAINING DISSOLVED THEREIN A NONPOLYMERIC ORGANIC CATIONIC MORDANT FOR SAID ACID DYE AT A RATIO OF SAID MORDANT TO SAID SOLVENT OF ABOUT 1/.25 TO 1/2 BY WEIGHT, SAID MORDANT BEING SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |