US2607683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a hydrolyzed cellulose ester printing plate
Assignee: Eastman Kodak Co
•
Filing: 1949-08-18
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Granted: 1952-08-19
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Expires: 1969-08-18
Abstract
No abstract record available.
Inventors
- 👤 Edward C Yackel
- 👤 Charles F Amering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:21
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; G03F7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF MAKING A PHOTOLITHOGRAPHIC PRINTING PLATE WHICH COMPRISES COATING A SUBSTANTIALLY FULLY ESTERIFIED CELLULOSE ORGANIC ACID ESTER SUPPORT WITH A LAYER OF HYDROPHILIC COLLOID CONTAINING SILVER HALIDE AND AN AQUEOUS COLLIDAL DISPERSING OF FROM ABOUT 3 TO 15 PARTS OF A WATERINSOLUBLE, SOFT, ACRYLATE RESIN PER PART OF HYDROPHILIC COLLOID, EXPOSING THE SENSITIVE COLLOID LAYER TO LIGHT UNDER AN IMAGE, DEVELOPING THE EXPOSED LAYER UNDER CONDITIONS OF TANNING DEVELOPMENT TREATING THE DEVELOPED LAYER WITH HOT WATER TO SWELL THE COLLOID IN THE EXPOSED REGIONS OF THE LAYER AND TO REMOVE HYDROPHILIC COLLOID FROM THE UNEXPOSED REGIONS WITHOUT REMOVING TO RESIN, TREATING THE LAYER WITH A HYDROLYZING SOLUTION TO HYDROLYZE THE PORTIONS OF THE CELLULOSE ESTER SUP-
Claim 2
Independent Claim
118 words
THE METHOD OF MAKING A PHOTOLITHOGRAPHIC PRINTING PLATE WHICH COMPRISES COATING A SUBSTANTIALLY FULLY ESTERIFIED CELLULOSE ORGANIC ACID ESTER SUPPORT WITH A LAYER OF HYDROPHILIC COLLOID CONTAINING SILVER HALIDE AND AN AQUEOUS COLLIDAL DISPERSING OF FROM ABOUT 3 TO 15 PARTS OF A WATERINSOLUBLE, SOFT, ACRYLATE RESIN PER PART OF HYDROPHILIC COLLOID, EXPOSING THE SENSITIVE COLLOID LAYER TO LIGHT UNDER AN IMAGE, DEVELOPING THE EXPOSED LAYER UNDER CONDITIONS OF TANNING DEVELOPMENT TREATING THE DEVELOPED LAYER WITH HOT WATER TO SWELL THE COLLOID IN THE EXPOSED REGIONS OF THE LAYER AND TO REMOVE HYDROPHILIC COLLOID FROM THE UNEXPOSED REGIONS WITHOUT REMOVING TO RESIN, TREATING THE LAYER WITH A HYDROLYZING SOLUTION TO HYDROLYZE THE PORTIONS OF THE CELLULOSE ESTER SUP-
References Cited (Backward Citations)
US2500052A
Cited
US2484431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |