Patent US3077402A successfully refreshed from Google Patents.
US3077402A
Expired / Lapsed
US
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Photographic color processes, products, and compositions
Assignee: Polaroid Corp
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Filing: 1954-12-06
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Granted: 1963-02-12
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Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 Elkan R Blout
- 👤 Saul G Cohen
- 👤 Green Milton
- 👤 Myron S Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:50
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/02; G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
IN A PROCESS OF FROMING PHOTOGRAPHIC IMAGES IN COLOR, THE STEPS WHICH COMPRISE DEVELOPING A LATENT IMAGE CONTAINED IN AN EXPOSED SILVER HALIDE EMULSION WITH AN AQUEOUS ALKALINE SOLUTION OF A DIAZO DYE DEVELOPER OF THE FORMULA:
Claim 2
Dependent Claim
37 words
IN A PROCESS OF FROMING PHOTOGRAPHIC IMAGES IN COLOR, THE STEPS WHICH COMPRISE DEVELOPING A LATENT IMAGE CONTAINED IN AN EXPOSED SILVER HALIDE EMULSION WITH AN AQUEOUS ALKALINE SOLUTION OF A DIAZO DYE DEVELOPER OF THE FORMULA:
References Cited (Backward Citations)
US2146040A
Cited
US2088907A
Cited
US2214446A
Cited
US2277262A
Cited
GB541073A
Cited
US2698244A
Cited
US2521908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |