US3063837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic diffusion transfer process for planographic printing
Assignee: Agfa Gevaert NV
•
Filing: 1959-11-04
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Granted: 1962-11-13
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Expires: 1979-11-04
Abstract
No abstract record available.
Inventors
- 👤 Lassig Wolfgang
- 👤 Gunther Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/063; G03F7/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCES FOR THE PRODUCTION OF PLANOGRAPHIC PRINTING FORMS WHICH COMPRISES EXPOSING TO AN IMAGE A PHOTO-GRAPHIC SILVER HALIDE EMULSION IN WHICH AT LEAST 80% OFF THE SILVER HALIDE IS SILVER CHLORIDE AND THE REMAINING SILVERR HALIDE IS SELECTED FROM THE CLASS CONSISTING OF SILVER CHLORIDE AND SILVER BROMIDE, CONTACTING THE EXPOSED EMUL-SION WITH A HARDENED GELATIN LAYER CONTAINING ALKALINENE EARTH THIOSULPHATE, DEVELOPING THE EXPOSED EMULSION WHILEE IN SUCH CONTACT WITH AN ALKALINE AQUEOUS SILVER HALIDEE DEVELOPER TO PRODUCE A NEGATIVE OF SAID IMAGE IN THEE EMULSION AND TO CAUSE UNEXPOSED SILVER HALIDE TO DIFFUSEE INTO SAID GELATIN LAYER AS A SILVER COMPLEX, SEPARATING THEE EMULSION FROM THE GELATIN LAYER, TREATING THE RESULTINGNG GELATIN LAYER WITH AN ALKALINE AQUEOUS SOLUTION OF AOF A MERCAPTO REACTANT SELECTED FROM THE CLASS CONSISTING OFF
Claim 2
Dependent Claim
131 words
A PROCES FOR THE PRODUCTION OF PLANOGRAPHIC PRINTING FORMS WHICH COMPRISES EXPOSING TO AN IMAGE A PHOTO-GRAPHIC SILVER HALIDE EMULSION IN WHICH AT LEAST 80% OFF THE SILVER HALIDE IS SILVER CHLORIDE AND THE REMAINING SILVERR HALIDE IS SELECTED FROM THE CLASS CONSISTING OF SILVER CHLORIDE AND SILVER BROMIDE, CONTACTING THE EXPOSED EMUL-SION WITH A HARDENED GELATIN LAYER CONTAINING ALKALINENE EARTH THIOSULPHATE, DEVELOPING THE EXPOSED EMULSION WHILEE IN SUCH CONTACT WITH AN ALKALINE AQUEOUS SILVER HALIDEE DEVELOPER TO PRODUCE A NEGATIVE OF SAID IMAGE IN THEE EMULSION AND TO CAUSE UNEXPOSED SILVER HALIDE TO DIFFUSEE INTO SAID GELATIN LAYER AS A SILVER COMPLEX, SEPARATING THEE EMULSION FROM THE GELATIN LAYER, TREATING THE RESULTINGNG GELATIN LAYER WITH AN ALKALINE AQUEOUS SOLUTION OF AOF A MERCAPTO REACTANT SELECTED FROM THE CLASS CONSISTING OFF
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) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |