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US2983606A Expired / Lapsed US ⏱️ 0.0 years remaining

Processes and products for forming photographic images in color

Assignee: Polaroid Corp
•
Filing: 1958-07-14
•
Granted: 1961-05-09
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Expires: 1978-07-14
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Abstract

No abstract record available.

Inventors

  • 👤 Howard G Rogers

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 00:15
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; Y; Y10; Y10S; Y10S430/00; Y10S430/142

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 251 words
A PROCESS OF FORMING POSITIVE TRANSFER IMAGES IN COLOR COMPRISING THE STEPS OF: PERMEATING AN EXPOSED PHOTOSENSITIVE ELEMENT, INCLUDING A PHOTOSENSITIVE SILVER HALIDE EMULSION, WITH A LIQUID COMPOSITION AND, DURING SAID PERMEATION, HAVING SAID PHOTOSENSITIVE ELEMENT SO SUPERPOSED ON AN IMAGE-RECEIVING LAYER FORMED OF A DYEABLE MATERIAL THAT SAID LIQUID HAS ACCES TO SAID DYEABLE MATERIAL, PROVIDING WITHIN THE LAMINATION COMPRISING SAID PHOTOSENSITIVE ELEMENT AND SAID IMAGE-RECEIVING LAYER AT LEAST ONE DYE DEVELOPER WHICH IS SOLUBLE IN SAID LIQUID AND WHICH WHEN DISSOLVED THEREIN IS MOBILE IN SAID LAMINATION, SAID MOBILE DYE DEVELOPER BEING A COMPOUND WHICH IS BOTH A SILVER HALIDE DEVELOPING AGENT AND A DYE HAVING A PREDOMINANT VISIBLE SPECTRAL ABSORPTION WITHIN THE REGION OF THE SPECTRUM TO WHICH SAID SILVER HALIDE EMULSION IS SENSITIVE, SAID DYE DEVELOPER BEING FURTHER CHARACTERIZED BY PROVIDING AN OXIDATION PRODUCT WHICH IS OF LOWER MOBILITY IN SAID LIQUID THAN THE UNOXIDIZED DYE DEVELOPER, DEVELOPING SAID EXPOSED PHOTOSENSITIVE MATERIAL AND FORMING SAID OXIDATION PRODUCT BY REACTION OF THE DEVELOPER PORTION OF SAID DYE DEVELOPER IN SAID EXPOSED AREAS, TRANSFERRING BY DIFFUSION TO SAID IMAGE-RECEIVING LAYER AT LEAST A PART OF THE UNOXIDIZED DYE DEVELOPER AND DEPOSITING SAID UNOXIDIZED DYE DEVELOPER UPON SAID IMAGERECEIVING LAYER TO DYE SAID LAYER WHEREBY A VISIBLE IMAGE IS CREATED BY SAID TRANSFERRED DYE DEVELOPER, AND INCLUDING THE STEP OF SEPARATING SAID IMAGE-RECEIVING LAYER AND SAID PHOTOSENSITIVE ELEMENT FROM THEIR SUPERPOSED RELATIONSHIP AT SOME STAGE OF SAID PROCES AFTER SAID UNOXIDIZED DYE DEVELOPER HAS BEEN TRANSFERRED TO SAID IMAGE-RECEIVING LAYER.
Claim 2
Dependent Claim 251 words
A PROCESS OF FORMING POSITIVE TRANSFER IMAGES IN COLOR COMPRISING THE STEPS OF: PERMEATING AN EXPOSED PHOTOSENSITIVE ELEMENT, INCLUDING A PHOTOSENSITIVE SILVER HALIDE EMULSION, WITH A LIQUID COMPOSITION AND, DURING SAID PERMEATION, HAVING SAID PHOTOSENSITIVE ELEMENT SO SUPERPOSED ON AN IMAGE-RECEIVING LAYER FORMED OF A DYEABLE MATERIAL THAT SAID LIQUID HAS ACCES TO SAID DYEABLE MATERIAL, PROVIDING WITHIN THE LAMINATION COMPRISING SAID PHOTOSENSITIVE ELEMENT AND SAID IMAGE-RECEIVING LAYER AT LEAST ONE DYE DEVELOPER WHICH IS SOLUBLE IN SAID LIQUID AND WHICH WHEN DISSOLVED THEREIN IS MOBILE IN SAID LAMINATION, SAID MOBILE DYE DEVELOPER BEING A COMPOUND WHICH IS BOTH A SILVER HALIDE DEVELOPING AGENT AND A DYE HAVING A PREDOMINANT VISIBLE SPECTRAL ABSORPTION WITHIN THE REGION OF THE SPECTRUM TO WHICH SAID SILVER HALIDE EMULSION IS SENSITIVE, SAID DYE DEVELOPER BEING FURTHER CHARACTERIZED BY PROVIDING AN OXIDATION PRODUCT WHICH IS OF LOWER MOBILITY IN SAID LIQUID THAN THE UNOXIDIZED DYE DEVELOPER, DEVELOPING SAID EXPOSED PHOTOSENSITIVE MATERIAL AND FORMING SAID OXIDATION PRODUCT BY REACTION OF THE DEVELOPER PORTION OF SAID DYE DEVELOPER IN SAID EXPOSED AREAS, TRANSFERRING BY DIFFUSION TO SAID IMAGE-RECEIVING LAYER AT LEAST A PART OF THE UNOXIDIZED DYE DEVELOPER AND DEPOSITING SAID UNOXIDIZED DYE DEVELOPER UPON SAID IMAGERECEIVING LAYER TO DYE SAID LAYER WHEREBY A VISIBLE IMAGE IS CREATED BY SAID TRANSFERRED DYE DEVELOPER, AND INCLUDING THE STEP OF SEPARATING SAID IMAGE-RECEIVING LAYER AND SAID PHOTOSENSITIVE ELEMENT FROM THEIR SUPERPOSED RELATIONSHIP AT SOME STAGE OF SAID PROCES AFTER SAID UNOXIDIZED DYE DEVELOPER HAS BEEN TRANSFERRED TO SAID IMAGE-RECEIVING LAYER.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1964-05-08 1964-11-07 1965-05-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-05-08 1968-11-07 1969-05-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-05-08 1972-11-07 1973-05-09 $7700.00 Window Closed / Lapsed

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