US2997390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel color processes and products
Assignee: Polaroid Corp
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Filing: 1956-09-04
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Granted: 1961-08-22
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Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:31
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3008; G03; G03C; G03C8/00; G03C8/02; G03C8/08; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A PROCESS OF FORMING TRANSFER IMAGES IN COLOR COMPRISING EXPOSING A PHOTOSENSITIVE ELEMENT COMPRISING AT LEAST ONE SILVER HALIDE EMULSION AND A COLORED COLORPROVIDING SUBSTANCE SO POSITIONED WITHIN SAID PHOTOSENSITIVE ELEMENT AS TO ABSORB LIGHT BY WHICH SAID SILVER HALIDE EMULSION IS EXPOSABLE, DEVELOPING SAID EXPOSED PHOTOSENSITIVE ELEMENT TO PROVIDE AN IMAGEWISE DIFFUSABLE DISTRIBUTION OF SAID COLOR-PROVIDING SUBSTANCE, AND TRANSFERRING, BY DIFFUSION, AT LEAST A PART OF SAID IMAGEWISE DISTRIBUTION TO A SUPERPOSED IMAGE-RECEIVING MATERIAL TO IMPART A COLOR IMAGE TO SAID IMAGE-RECEIVING MATERIAL, THE IMPROVEMENT IN WHICH SAID COLORED COLOR-PROVIDING SUBSTANCE IS PRESENT IN SAID PHOTOSENSITIVE ELEMENT DURING EXPOSURE IN A FORM EXHIBITING SUBSTANTIALLY THE SAME PLANE OF POLARIZATION THROUGHT THE THICKNESS OF THE LAYER CONTAINING SAID COLORED COLOR-PROVIDING SUBNSTANCE, WHEREBY SAID COLORED COLOR-PROVIDING SUBSTANCE ABSORBS LESS LIGHT DURING EXPOSURE AND THE LAYER CONTAINING SAID COLORED COLOR-PROVIDING SUBSTANCE TRANSMITS LIGHT WHICH OTHERWISE WOULD BE ABSORBED BY SAID COLORED COLOR-PROVIDING SUBSTANCE.
Claim 2
Dependent Claim
152 words
IN A PROCESS OF FORMING TRANSFER IMAGES IN COLOR COMPRISING EXPOSING A PHOTOSENSITIVE ELEMENT COMPRISING AT LEAST ONE SILVER HALIDE EMULSION AND A COLORED COLORPROVIDING SUBSTANCE SO POSITIONED WITHIN SAID PHOTOSENSITIVE ELEMENT AS TO ABSORB LIGHT BY WHICH SAID SILVER HALIDE EMULSION IS EXPOSABLE, DEVELOPING SAID EXPOSED PHOTOSENSITIVE ELEMENT TO PROVIDE AN IMAGEWISE DIFFUSABLE DISTRIBUTION OF SAID COLOR-PROVIDING SUBSTANCE, AND TRANSFERRING, BY DIFFUSION, AT LEAST A PART OF SAID IMAGEWISE DISTRIBUTION TO A SUPERPOSED IMAGE-RECEIVING MATERIAL TO IMPART A COLOR IMAGE TO SAID IMAGE-RECEIVING MATERIAL, THE IMPROVEMENT IN WHICH SAID COLORED COLOR-PROVIDING SUBSTANCE IS PRESENT IN SAID PHOTOSENSITIVE ELEMENT DURING EXPOSURE IN A FORM EXHIBITING SUBSTANTIALLY THE SAME PLANE OF POLARIZATION THROUGHT THE THICKNESS OF THE LAYER CONTAINING SAID COLORED COLOR-PROVIDING SUBNSTANCE, WHEREBY SAID COLORED COLOR-PROVIDING SUBSTANCE ABSORBS LESS LIGHT DURING EXPOSURE AND THE LAYER CONTAINING SAID COLORED COLOR-PROVIDING SUBSTANCE TRANSMITS LIGHT WHICH OTHERWISE WOULD BE ABSORBED BY SAID COLORED COLOR-PROVIDING SUBSTANCE.
References Cited (Backward Citations)
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US2484818A
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US2614926A
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US2647049A
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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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |