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US3674483A Expired / Lapsed US ⏱️ 0.0 years remaining

Reproduction method

Assignee: Agfa Gevaert NV
•
Filing: 1969-04-24
•
Granted: 1972-07-04
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Expires: 1989-04-24
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Abstract

Abstract A METHOD OF RECORDING INFORMATION USING A RECORDING MATERIAL HAVING A WATER-PERMEABLE RECORDING LAYER CONSISTING ESSENTIALLY OF A CONTINUOUS PHASE OF AT LEAST ONE PROTEINACEOUS HYDROPHILIC COLLOID BINDER HAVING DISTRIBUTED THERETHROUGH FINELY DIVIDED PARTICLES OF A HYDROPHILIC INORGANIC PHOTOCONDUCTIVE COMPOUND IN ONE EMBOIDIMENT AND FINELY DIVIDED PARTICLES OF A NON-PHOTOCONDUCTIVE HYDROPHILIC PIGMENT, PLUS AN ORGANIC PHOTOCONDUCTIVE DYE, IN ANOTHER EMBODIMENT, WHEREIN THE RECORDING LAYER IS IMAGE-WISE EXPOSED TO ACTIVE ELECTROMAGNETIC RADIATION AND THEN DEVELOPED BY CONTACTING THE SAME WITH AN AQUEOUS LIQUID TO PRODUCE A VISBILE CHANGE IN THE RECORDING LAYER BY PENETRATION OR REMOVAL OF THE WATER-PERMEABLE UNEXPOSED REGIONS OF THE LAYER BY THE AQUEOUS LIQUID. THE RATIO BY WEIGHT OF HYDROPHILIC PARTICLES TO HYDROPHILIC COLLOID IS ABOUT 1:1 TO 5:1 AND THE PROPORTION OF THE ORGANIC PHOTOCONDUCTIVE DYE IS AT LEAST ABOUT 0.05% BY WEIGHT OF THE HYDROPHILIC NON-PHOTOCONDUCTIVE PARTICLES.

Inventors

  • 👤 Marcel Nicolas Vrancken
  • 👤 Eric Maria Brinckman
  • 👤 Frans Clement Heugebaert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 20:03
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/12; G03C; G03C1/00; G03C1/705; G03F7/004; G03F7/038; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; B41M5/366

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1975-07-04 1976-01-03 1976-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-04 1980-01-03 1980-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-04 1984-01-03 1984-07-04 $7700.00 Window Closed / Lapsed

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