US2941466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planographic printing platess
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
•
Filing: 1956-08-24
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Granted: 1960-06-21
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Newman
- 👤 Allan T Schlotzhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:21
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/10; B41C1/1091; B41N; B41N3/00; B41N3/03; B41N3/036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A FIBROUS FLEXIBLE FOUNDATION WEB, A PRINTING SURFACE COATING ON SAID WEB CONSISTING ESSENTIALLY OF AN INSOLUBLE HYDROPHILIC POLYSACCHARIDE CARBOXY ETHER FILM FORMING MATERIAL INSOLUBILIZED BY REACTION WITH A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF COPPER SALTS, IRON SALTS, ALUMINUM SALTS AND CHROMIUM COMPOUNDS AND WHICH THUS REACTED HAS A HYDROPHILIC-OLEOPHILIC BALANCE SUITABLE FOR DIRECT-IMAGING USE, AND WHICH IS SUBJECT TO BECOMING EXCESSIVELY INK-SENSITIVE UPON SUBSEQUENT EXPOSURE TO PROTRACTED CONDITIONS OF ABNORMAL HEAT AND HUMIDITY, SAID COATING INCLUDING AN AMOUNT OF ZINC OXIDE SUFFICIENT TO ACT AS AN AGING SENSITIZATION INHIBITOR FOR SAID INSOLUBILIZED FILM FORMER, SAID AMOUNT BEING EQUIVALENT TO AT LEAST ABOUT THIRTY PERCENT OF WEIGHT OF SAID FILM FORMING MATERIAL.
Claim 2
Dependent Claim
120 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A FIBROUS FLEXIBLE FOUNDATION WEB, A PRINTING SURFACE COATING ON SAID WEB CONSISTING ESSENTIALLY OF AN INSOLUBLE HYDROPHILIC POLYSACCHARIDE CARBOXY ETHER FILM FORMING MATERIAL INSOLUBILIZED BY REACTION WITH A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF COPPER SALTS, IRON SALTS, ALUMINUM SALTS AND CHROMIUM COMPOUNDS AND WHICH THUS REACTED HAS A HYDROPHILIC-OLEOPHILIC BALANCE SUITABLE FOR DIRECT-IMAGING USE, AND WHICH IS SUBJECT TO BECOMING EXCESSIVELY INK-SENSITIVE UPON SUBSEQUENT EXPOSURE TO PROTRACTED CONDITIONS OF ABNORMAL HEAT AND HUMIDITY, SAID COATING INCLUDING AN AMOUNT OF ZINC OXIDE SUFFICIENT TO ACT AS AN AGING SENSITIZATION INHIBITOR FOR SAID INSOLUBILIZED FILM FORMER, SAID AMOUNT BEING EQUIVALENT TO AT LEAST ABOUT THIRTY PERCENT OF WEIGHT OF SAID FILM FORMING MATERIAL.
References Cited (Backward Citations)
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Cited
US2542784A
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US2655864A
Cited
US2693145A
Cited
US2635537A
Cited
US2778301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |