US3600166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic plate and process of making
Assignee: Eastman Kodak Co
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Filing: 1967-07-03
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Granted: 1971-08-17
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Expires: 1987-07-03
Abstract
Abstract A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT SUCH AS PAPER, ALUMINUM, ETC., A GELATIN PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER HAVING A MELTING POINT ABOVE ABOUT 180* F. AND ADJACENT TO SAID LAYER AND BETWEEN THE EMULSION LAYER AND THE SUPPORT A NON-POROUS HYDROPHILIC LAYER SUCH AS POLYACRYLAMIDE, ETC., HAVING A CONTACT ANGLE OF LESS THAN ABOUT 65* IS USED TO PROVIDE A LITHOGRAPHIC PRINTING PLATE BY THE ETCH-BLEACH PROCESS.
Inventors
- 👤 Albert L Sieg
- 👤 Robert N Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:38
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; B; B41; B41N; B41N3/00; B41N3/03; B41N3/036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |