Patent US3271150A successfully refreshed from Google Patents.
US3271150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic printing plate
Assignee: Eastman Kodak Co
•
Filing: 1963-04-01
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Granted: 1966-09-06
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Carlton D Baxter
- 👤 Henry C Staehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:15
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/12; G; G03; G03F; G03F7/00; G03F7/004; G03F7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR PREPARING PRINTING PLATES HAVING RAISED PRINTING SURFACES FREE OF UNDERCUTTING IN THE SUPPORT PORTIONS THEREOF WHICH COMPRISES DEVELOPING WITH A SILVER HALIDE TANNING DEVELOPER AN EXPOSED SUBSTANTIALLY UNHARDENED SILVER HALIDE EMULSION ATTACHED TO A CELLULOSE ACETATEBUTYRATE SUPPORT HAVING A THICKNESS OF 0.010 TO 0.0020-INCH BY A THIN SUBBING LAYER ON THICKER THAN THAT HAVING A COVERAGE OF ABOUT 0.012 G./SQ. FT. AND CAPABLE OF BEING READILY ETHED IMAGEWISE BY A SEMISOLVENT FOR THE CELLULOSE ACETATEBUTYRATE, REMOVING THE UNEXPOSED PORTIONS OF THE EMULSION TO FORM A RESIST IMAGE IN HARDENED GELATIN, ETCHING THE EXPOSED AREAS OF THE CELLULOSE ACETATEBUTYRATE SUPPORT BY REPEATED CYCLES OF (1) ETCHING WITH SEMISOLVENT, (2) REMOVING THE SEMISOLVENT AND (3) DRYING.
Claim 2
Dependent Claim
117 words
A PROCESS FOR PREPARING PRINTING PLATES HAVING RAISED PRINTING SURFACES FREE OF UNDERCUTTING IN THE SUPPORT PORTIONS THEREOF WHICH COMPRISES DEVELOPING WITH A SILVER HALIDE TANNING DEVELOPER AN EXPOSED SUBSTANTIALLY UNHARDENED SILVER HALIDE EMULSION ATTACHED TO A CELLULOSE ACETATEBUTYRATE SUPPORT HAVING A THICKNESS OF 0.010 TO 0.0020-INCH BY A THIN SUBBING LAYER ON THICKER THAN THAT HAVING A COVERAGE OF ABOUT 0.012 G./SQ. FT. AND CAPABLE OF BEING READILY ETHED IMAGEWISE BY A SEMISOLVENT FOR THE CELLULOSE ACETATEBUTYRATE, REMOVING THE UNEXPOSED PORTIONS OF THE EMULSION TO FORM A RESIST IMAGE IN HARDENED GELATIN, ETCHING THE EXPOSED AREAS OF THE CELLULOSE ACETATEBUTYRATE SUPPORT BY REPEATED CYCLES OF (1) ETCHING WITH SEMISOLVENT, (2) REMOVING THE SEMISOLVENT AND (3) DRYING.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |