Patent US3369903A successfully refreshed from Google Patents.
US3369903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive element for preparing etching resist for gravure purposes
Assignee: Eastman Kodak Co
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Filing: 1964-12-21
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Granted: 1968-02-20
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Robert C Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:35
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; G03C1/00; G03C1/76; G03C1/825; G03C5/315; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/09; G03F7/092
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A GRAVURE RESIST FILM COMPRISING A DIMENSIONALLY STABLE, TEMPORARY SUPPORT CONTAINING THEREON: (1) A STRIPPING LAYER, (2) AN UNHARDENED COLLOID LAYER CONTAINING AN OIL DISPERSION AND (3) A SUBSTANTIALLY UNHARDENED COLLOID LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC EMULSION, IN THAT ORDER.
Claim 2
Dependent Claim
40 words
A GRAVURE RESIST FILM COMPRISING A DIMENSIONALLY STABLE, TEMPORARY SUPPORT CONTAINING THEREON: (1) A STRIPPING LAYER, (2) AN UNHARDENED COLLOID LAYER CONTAINING AN OIL DISPERSION AND (3) A SUBSTANTIALLY UNHARDENED COLLOID LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC EMULSION, IN THAT ORDER.
Claim 3
Dependent Claim
118 words
A PROCESS OF FORMING A GRAVURE PRINTING PLATE COMPRISING DEVELOPING AN EXPOSED LIGHT SENSITIVE ELEMENT COMPRISING A DIMENSIONALLY STABLE, TEMPORARY SUPPORT CONTAINING THEREON: (1) A STRIPPING LAYER, (2) AN UNHARDENED COLLOID LAYER CONTAINING AN OIL DISPERSION AND (3) A SUBSTANTIALLY UNHARDENED GELATIN LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC EMULSION, IN THAT ORDER, IN THE PRESENCE OF A TANNING TYPE SILVER HALIDE DEVELOPER, TO OBTAIN A SILVER IMAGE, FIXING THE EMULSION AND CONTACTING THE SAID ELEMENT AGAINST A METALLIC SURFACE, WITH THE EMULSION SIDE AGAINST THE SURFACE, TO ADHERE THE EMULSION TO THE SURFACE, STRIPPING THE TEMPORARY SUPPORT FROM THE STRIPPING LAYER, REMOVING THE STRIPPING LAYER, THE UNHARDENED COLLOID LAYER AND THE UNHARDENED AREAS OF THE EMULSION LAYER AND ETCHING.
Claim 4
Dependent Claim
118 words
A PROCESS OF FORMING A GRAVURE PRINTING PLATE COMPRISING DEVELOPING AN EXPOSED LIGHT SENSITIVE ELEMENT COMPRISING A DIMENSIONALLY STABLE, TEMPORARY SUPPORT CONTAINING THEREON: (1) A STRIPPING LAYER, (2) AN UNHARDENED COLLOID LAYER CONTAINING AN OIL DISPERSION AND (3) A SUBSTANTIALLY UNHARDENED GELATIN LIGHT SENSITIVE SILVER HALIDE PHOTOGRAPHIC EMULSION, IN THAT ORDER, IN THE PRESENCE OF A TANNING TYPE SILVER HALIDE DEVELOPER, TO OBTAIN A SILVER IMAGE, FIXING THE EMULSION AND CONTACTING THE SAID ELEMENT AGAINST A METALLIC SURFACE, WITH THE EMULSION SIDE AGAINST THE SURFACE, TO ADHERE THE EMULSION TO THE SURFACE, STRIPPING THE TEMPORARY SUPPORT FROM THE STRIPPING LAYER, REMOVING THE STRIPPING LAYER, THE UNHARDENED COLLOID LAYER AND THE UNHARDENED AREAS OF THE EMULSION LAYER AND ETCHING.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |