US2937085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite photosensitive plate, and method of making printing plate therefrom
Assignee: Ditto Inc
•
Filing: 1954-01-11
•
Granted: 1960-05-17
•
Expires: 1974-01-11
Abstract
No abstract record available.
Inventors
- 👤 Raymond P Seven
- 👤 James J Miyashiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:29
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PHOTOSENSITIVE PLATE SUITABLE FOR THE MANUFACTURE OFPRINTING PLATES COMPRISING A BASE SHEET HAVING AN OLEOPHILIC SURFACE COMPRISING A SUBSTANTIAL AMOUNT OF THE WATER INSOLUBLE LIGHT DECOMPOSITION PRODUCT OF A DIAZONIUM COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 225, AND HAVING A LAYER THEREON OF A HYDROPHILIC WATER SOLUBLE HYDROXY ETHYL CELLULOSE, HAVING UNIFORMLY DISPERSED THROUGHOUT A SUBSTANTIAL AMOUNT OF A LIGHT SENSITIVE DIAZONIUM COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 225, THE RATIO OF HYDROXY ETHYL CELLULOSE TO LIGHT SENSITIVE DIAZONIUM COMPOUND BEING BETWEEN 20:1 AND 110:1.
Claim 2
Dependent Claim
90 words
A PHOTOSENSITIVE PLATE SUITABLE FOR THE MANUFACTURE OFPRINTING PLATES COMPRISING A BASE SHEET HAVING AN OLEOPHILIC SURFACE COMPRISING A SUBSTANTIAL AMOUNT OF THE WATER INSOLUBLE LIGHT DECOMPOSITION PRODUCT OF A DIAZONIUM COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 225, AND HAVING A LAYER THEREON OF A HYDROPHILIC WATER SOLUBLE HYDROXY ETHYL CELLULOSE, HAVING UNIFORMLY DISPERSED THROUGHOUT A SUBSTANTIAL AMOUNT OF A LIGHT SENSITIVE DIAZONIUM COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 225, THE RATIO OF HYDROXY ETHYL CELLULOSE TO LIGHT SENSITIVE DIAZONIUM COMPOUND BEING BETWEEN 20:1 AND 110:1.
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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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |