US2774668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and product for forming color images from complete dyes
Assignee: Polaroid Corp
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Filing: 1953-05-28
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Granted: 1956-12-18
•
Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
242 words
A PROCESS OF FORMING IMAGES IN COLOR WHICH COMPRISES ABSORBING A LIQUID INTO A PHOTOSENSITIVE ELEMENT INCLUDING A PHOTOSENSITIVE SILVER HALIDE LAYER HAVING A LATENT IMAGE THEREIN AND PROVIDING IN SOLUTION IN SAID LAYER A SUBSTANTIALLY UNIFORM DISTRIBUTION OF (1) A DYE WHICH POSSESSES A COUPLING FUNCTION AND WHICH IS REACTABLE WITH OXIDIZED PORTIONS OF A SILVER HALIDE DEVELOPER, SAID DYE BEING MOBILE IN SAID PHOTOSENSITIVE LAYER WHEN DISSOLVED IN SAID LIQUID AND (2) A SILVER HALIDE DEVELOPER CAPABLE OF PROVIDING, UPON THE DEVELOPMENT OF SAID LATENT IMAGE TO SILVER, A GAS WHICH IS GENERATED IN THE EXPOSED REGIONS OF SAID PHOTOSENSITIVE LAYER AND WHICH THEREBY FORMS BUBBLES AT LEAST IN THE PHOTOSENSITIVE LAYER WHEN DISADJACENT SAID EXPOSED REGIONS THEREOF, DEVELOPING SAID LATENT IMAGE TO SILVER WITH SAID DEVELOPER IN SAID PHOTOSENSITIVE LAYER AND IMMOBILIZING SAID DYE IN EXPOSED REGIONS OF SAID PHOTOSENSITIVE LAYER, SAID IMMOBILIZATION BEING EFFECTED AT LEAST IN PART BY THE FORMATION OF A BARRIER COMPRISING BUBBLES OF A GAS FORMED IN SAID PHOTOSENSITIVE LAYER AS A RESULT OF THE OXIDATION OF SAID DEVELOPER WHILE PROVIDING IN SAID PHOTOSENSITIVE LAYER AS A FURTHER RESULT OF DEVELOPMENT AN IMAGEWISE DISTRIBUTION COMPRISING MOBILE DYE AND UNREACTED DEVELOPER AND TRANSFERRING FROM SAID PHOTOSENSITIVE LAYER, BY IMBIBITION, AT LEAST PART OF SAID IMAGEWISE DISTRIBUTION OF MOBILE DYE TO A PRINTRECEIVING ELEMENT LOCATED IN SUPERPOSED RELATION TO SAID PHOTOSENSITIVE ELEMENT TO IMPART TO SAID PRINT-RECEIVING ELEMENT AN IMAGE IN TERMS OF SAID MOBILE DYE.
Claim 2
Dependent Claim
242 words
A PROCESS OF FORMING IMAGES IN COLOR WHICH COMPRISES ABSORBING A LIQUID INTO A PHOTOSENSITIVE ELEMENT INCLUDING A PHOTOSENSITIVE SILVER HALIDE LAYER HAVING A LATENT IMAGE THEREIN AND PROVIDING IN SOLUTION IN SAID LAYER A SUBSTANTIALLY UNIFORM DISTRIBUTION OF (1) A DYE WHICH POSSESSES A COUPLING FUNCTION AND WHICH IS REACTABLE WITH OXIDIZED PORTIONS OF A SILVER HALIDE DEVELOPER, SAID DYE BEING MOBILE IN SAID PHOTOSENSITIVE LAYER WHEN DISSOLVED IN SAID LIQUID AND (2) A SILVER HALIDE DEVELOPER CAPABLE OF PROVIDING, UPON THE DEVELOPMENT OF SAID LATENT IMAGE TO SILVER, A GAS WHICH IS GENERATED IN THE EXPOSED REGIONS OF SAID PHOTOSENSITIVE LAYER AND WHICH THEREBY FORMS BUBBLES AT LEAST IN THE PHOTOSENSITIVE LAYER WHEN DISADJACENT SAID EXPOSED REGIONS THEREOF, DEVELOPING SAID LATENT IMAGE TO SILVER WITH SAID DEVELOPER IN SAID PHOTOSENSITIVE LAYER AND IMMOBILIZING SAID DYE IN EXPOSED REGIONS OF SAID PHOTOSENSITIVE LAYER, SAID IMMOBILIZATION BEING EFFECTED AT LEAST IN PART BY THE FORMATION OF A BARRIER COMPRISING BUBBLES OF A GAS FORMED IN SAID PHOTOSENSITIVE LAYER AS A RESULT OF THE OXIDATION OF SAID DEVELOPER WHILE PROVIDING IN SAID PHOTOSENSITIVE LAYER AS A FURTHER RESULT OF DEVELOPMENT AN IMAGEWISE DISTRIBUTION COMPRISING MOBILE DYE AND UNREACTED DEVELOPER AND TRANSFERRING FROM SAID PHOTOSENSITIVE LAYER, BY IMBIBITION, AT LEAST PART OF SAID IMAGEWISE DISTRIBUTION OF MOBILE DYE TO A PRINTRECEIVING ELEMENT LOCATED IN SUPERPOSED RELATION TO SAID PHOTOSENSITIVE ELEMENT TO IMPART TO SAID PRINT-RECEIVING ELEMENT AN IMAGE IN TERMS OF SAID MOBILE DYE.
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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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |