← Back to Patent Explorer
US3255002A Expired / Lapsed US ⏱️ 0.0 years remaining

Color photographic process and product

Assignee: Polaroid Corp
•
Filing: 1961-03-09
•
Granted: 1966-06-07
•
Expires: 1981-03-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Howard G Rogers

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 05:15
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C5/00; G03C5/56

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 156 words
THE PROCESS OF FORMING IMAGES IN COLOR WHICH COMPRISES EXPOSING A LIGHT-SENSITIVE ELEMENT COMPRISING A LIGHT-SENSITIVE PERMEABLE POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CINNAMIC ACID ESTERS OF POLYVINYL ALCOHOL AND CELLULOSE, BENZAL-AR-VINYLACETOPENONE POLYMERS, CINNAMAL-AR-VINYLACETOPHENONE POLYMERS, CINNAMOYLATED POLYSTYRNES AND CINNAMEL KETONES, AND AT LEAST ONE COLOR IAMGE-FORMING MATERIAL, THEREBY SELECTIVELY REDUCING THE PERMEABILITY OF SAID POLYMERIC MATERIAL IN AREAS OF EXPOSURE; CONTACTING SAID EXPOSED ELEMENT WITH AN AQUEOUS PROCESSING MEDIUM COMPRISING AT LEAST A SOLVENT FOR SAID COLOR IMAGE-FORMING MATERIAL; PERMEATING EXPOSED AND PARTIALLY EXPOSED AREAS OF SAID POLYMERIC MATERIAL WITH SAID COMPOSITION TO FORM AN IMAGEWISE AQUEOUS SOLUTION CONTAINING SAID COLOR IMAGEFORMING MATERIAL IN TERMS OF UNEXPOSED AND PARTIALY EXPOSED AREAS OF SAID POLYMERIC MATERIAL; AND DIFFUSING AT LEAST A PORTION OF SAID IMAGEWISE SOLUTION THROUGH SAID UNEXPOSED AND PARTIALLY EXPOSED POLYMERIC MATERIAL TO A SUPERPOSED IMAGE-RECEIVING LAYER TO FORM A POSITIVE IMAGE ON SAID IMAGE-RECEIVING LAYER CONSISTING ESSENTIALLY OF SAID COLOR IMAGE-FORMING MATERIAL.
Claim 2
Dependent Claim 156 words
THE PROCESS OF FORMING IMAGES IN COLOR WHICH COMPRISES EXPOSING A LIGHT-SENSITIVE ELEMENT COMPRISING A LIGHT-SENSITIVE PERMEABLE POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CINNAMIC ACID ESTERS OF POLYVINYL ALCOHOL AND CELLULOSE, BENZAL-AR-VINYLACETOPENONE POLYMERS, CINNAMAL-AR-VINYLACETOPHENONE POLYMERS, CINNAMOYLATED POLYSTYRNES AND CINNAMEL KETONES, AND AT LEAST ONE COLOR IAMGE-FORMING MATERIAL, THEREBY SELECTIVELY REDUCING THE PERMEABILITY OF SAID POLYMERIC MATERIAL IN AREAS OF EXPOSURE; CONTACTING SAID EXPOSED ELEMENT WITH AN AQUEOUS PROCESSING MEDIUM COMPRISING AT LEAST A SOLVENT FOR SAID COLOR IMAGE-FORMING MATERIAL; PERMEATING EXPOSED AND PARTIALLY EXPOSED AREAS OF SAID POLYMERIC MATERIAL WITH SAID COMPOSITION TO FORM AN IMAGEWISE AQUEOUS SOLUTION CONTAINING SAID COLOR IMAGEFORMING MATERIAL IN TERMS OF UNEXPOSED AND PARTIALY EXPOSED AREAS OF SAID POLYMERIC MATERIAL; AND DIFFUSING AT LEAST A PORTION OF SAID IMAGEWISE SOLUTION THROUGH SAID UNEXPOSED AND PARTIALLY EXPOSED POLYMERIC MATERIAL TO A SUPERPOSED IMAGE-RECEIVING LAYER TO FORM A POSITIVE IMAGE ON SAID IMAGE-RECEIVING LAYER CONSISTING ESSENTIALLY OF SAID COLOR IMAGE-FORMING MATERIAL.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-06-06 1969-12-06 1970-06-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-06-06 1973-12-06 1974-06-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-06-06 1977-12-06 1978-06-07 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag