Patent US3364024A successfully refreshed from Google Patents.
US3364024A
Expired / Lapsed
US
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Photographic process
Assignee: Eastman Kodak Co
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Filing: 1963-06-24
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Granted: 1968-01-16
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Expires: 1983-06-24
Abstract
No abstract record available.
Inventors
- 👤 Edward C Yackel
- 👤 Donald P Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:50
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C5/00; G03C5/26; G03C5/29; G03C5/315; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS OF PREPARING A PHOTOGRAPHIC RESIST COMPRISING: (A) DEVELOPING WITH A COMPOSITION SUBSTANTIALLY FREE OF A SILVER HALIDE COMPLEXING AGENT, CONTAINING A 1,4DIHYDROXY BENZENE SILVER HALIDE TANNING DEVELOPER SELECTED FROM THE CLASS CONSISTING OF HYDROQUINONE, CHLOROHYDROQUINONE, BROMOHYDROQUINONE, TOLUHYDROQUINONE AND MORPHOLINE METHYL HYDROQUINONE, A PHOTOGRAPHIC ELEMENT EXPOSED TO A LIGHT IMAGE, SAID ELEMENT COMPRISING A SUPPORT HAVING THEREON A LIGHT SENSITIVE SUBSTANTIALLY UNHARDENED SILVER HALIDE GELATIN EMULSION, AND HAVING INTERGRAL THEREWITH, A PIGMENTED, NON-SILVER HALIDE CONTAINING COLLOID LAYER CAPABLE OF BEING INSOLUBILIZED INAGEWISE BY THE DIFFUSIBLE OXIDATION PRODUCTS OF THE SAID 1,4-DIHYDROXY
Claim 2
Dependent Claim
92 words
A PROCESS OF PREPARING A PHOTOGRAPHIC RESIST COMPRISING: (A) DEVELOPING WITH A COMPOSITION SUBSTANTIALLY FREE OF A SILVER HALIDE COMPLEXING AGENT, CONTAINING A 1,4DIHYDROXY BENZENE SILVER HALIDE TANNING DEVELOPER SELECTED FROM THE CLASS CONSISTING OF HYDROQUINONE, CHLOROHYDROQUINONE, BROMOHYDROQUINONE, TOLUHYDROQUINONE AND MORPHOLINE METHYL HYDROQUINONE, A PHOTOGRAPHIC ELEMENT EXPOSED TO A LIGHT IMAGE, SAID ELEMENT COMPRISING A SUPPORT HAVING THEREON A LIGHT SENSITIVE SUBSTANTIALLY UNHARDENED SILVER HALIDE GELATIN EMULSION, AND HAVING INTERGRAL THEREWITH, A PIGMENTED, NON-SILVER HALIDE CONTAINING COLLOID LAYER CAPABLE OF BEING INSOLUBILIZED INAGEWISE BY THE DIFFUSIBLE OXIDATION PRODUCTS OF THE SAID 1,4-DIHYDROXY
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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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |