US3149972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazo and resinous coupler printing plates for photomechanical reproduction
Assignee: GAF Chemicals Corp
•
Filing: 1960-08-16
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Granted: 1964-09-22
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Expires: 1980-08-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Clifford E Herrick
- 👤 Jr Peter T Woitach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021; G03F7/0212; C; C08; C08F; C08F8/00; C08F8/30; G03F7/022; G03F7/023; G03F7/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A LIGHT-SENSITIVE ELEMENT FOR USE IN PHOTOMECHANICAL REPRODUCTION COMPRISING A WATER-RECEPTIVE BASE HAVING A COATING THEREON COMPRISING A MIXTURE OF A DIAZO COMPOUND AND A POLYMERIC COUPLING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYVINYL ACETOACETATE, POLYVINYL ACETATE-ACETOACETATE, THE ACETOACETIC ESTR OF HYDROXYETHYL CELLULOSE AND THE REACTION PRODUCT OF THE COPOLYMER OF POLYVINYL METHYL ETHER AND MALEIC ANHYDRIDE WITH THE COMPOUND
Claim 2
Dependent Claim
61 words
A LIGHT-SENSITIVE ELEMENT FOR USE IN PHOTOMECHANICAL REPRODUCTION COMPRISING A WATER-RECEPTIVE BASE HAVING A COATING THEREON COMPRISING A MIXTURE OF A DIAZO COMPOUND AND A POLYMERIC COUPLING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYVINYL ACETOACETATE, POLYVINYL ACETATE-ACETOACETATE, THE ACETOACETIC ESTR OF HYDROXYETHYL CELLULOSE AND THE REACTION PRODUCT OF THE COPOLYMER OF POLYVINYL METHYL ETHER AND MALEIC ANHYDRIDE WITH THE COMPOUND
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |