US2843485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer process of photographic printing
Assignee: Eastman Kodak Co
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Filing: 1954-05-17
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Granted: 1958-07-15
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Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Henry C Yutzy
- 👤 Herbert B Cowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:28
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C8/28; G03C1/00; G03C1/005; G03C1/04; G03C1/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST TWO LAYERS INCLUDING A SUBSTANTIALLY UNHARDENED GELATIO-SILVER HALIDE EMULSION LAYER HAVING A DIHYDROXY DIPHENYL DEVELOPING AGENT INCORPORATED THEREIN, AND A LAYER OF UNSENSITIZED, SUBSTANTIALLY UNHARDENED GELATIN CONTAINING A CHEMICAL PRECIPITANT FOR DISSOLVED SILVER IONS COATED DIRECTLY ON SAID EMULSION LAYER AND ATTACHED TO SAID EMULSION LAYER TO PERMIT TRANSFER OF DISSOLVED, UNDEVELOPED SILVER IONS FROM SAID EMULSION LAYER TO SAID GELATIN LAYER CONTAINING SAID CHEMICAL PRECIPITANT FOR DISSOLVED SILVER IONS, UPON EXPOSURE AND DEVELOPMENT OF SAID EMULSION LAYER IN A SOLVENT DEVELOPER, AND TO FORM A REVERSED PHOTOGRAPHIC IMAGE IN SAID STRATUM CONTAINING SAID CHEMICAL PRECIPITANT FOR DISSOLVED SILVER IONS, AND TO PERMIT TRANSFER OF A STRATUM OF SAID GELATIN LAYER CONTAINING SAID REVERSED PHOTOGRAPHIC IMAGE TO A DRY, ABSORBENT SURFACE, SAID GELATIN LAYERS BEING NOT HARDER THAN A GELATIN LAYER CONTAINING 1/4 OUNCE OF FORMALDEHYDE PER POUND OF GELATIN.
Claim 2
Dependent Claim
151 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST TWO LAYERS INCLUDING A SUBSTANTIALLY UNHARDENED GELATIO-SILVER HALIDE EMULSION LAYER HAVING A DIHYDROXY DIPHENYL DEVELOPING AGENT INCORPORATED THEREIN, AND A LAYER OF UNSENSITIZED, SUBSTANTIALLY UNHARDENED GELATIN CONTAINING A CHEMICAL PRECIPITANT FOR DISSOLVED SILVER IONS COATED DIRECTLY ON SAID EMULSION LAYER AND ATTACHED TO SAID EMULSION LAYER TO PERMIT TRANSFER OF DISSOLVED, UNDEVELOPED SILVER IONS FROM SAID EMULSION LAYER TO SAID GELATIN LAYER CONTAINING SAID CHEMICAL PRECIPITANT FOR DISSOLVED SILVER IONS, UPON EXPOSURE AND DEVELOPMENT OF SAID EMULSION LAYER IN A SOLVENT DEVELOPER, AND TO FORM A REVERSED PHOTOGRAPHIC IMAGE IN SAID STRATUM CONTAINING SAID CHEMICAL PRECIPITANT FOR DISSOLVED SILVER IONS, AND TO PERMIT TRANSFER OF A STRATUM OF SAID GELATIN LAYER CONTAINING SAID REVERSED PHOTOGRAPHIC IMAGE TO A DRY, ABSORBENT SURFACE, SAID GELATIN LAYERS BEING NOT HARDER THAN A GELATIN LAYER CONTAINING 1/4 OUNCE OF FORMALDEHYDE PER POUND OF GELATIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |