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
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.
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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) | 1969-06-06 | 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 |