US2983220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-sensitive planographic printing plate
Assignee: Timefax Corp
•
Filing: 1955-03-16
•
Granted: 1961-05-09
•
Expires: 1975-03-16
Abstract
No abstract record available.
Inventors
- 👤 Harold R Dalton
- 👤 Wolf Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:17
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/10; B41C1/1008; B41C1/1033; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
81 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING, A BACKING HAVING AN EXPOSED WATER INSOLUBLE, HYDROPHILIC LITHOGRAPHIC SURFACE COAT CONSISTING MAINLY OF A COPOLYMER OF MALEIC ACID AND ONE OR MORE VINYL ETHERS CHOSEN FROM THE GROUP CONSISTING OF VINYL METHYL ETHER, VINYL ETHYL ETHER, VINYL, ISOBUTYL ETHER, AND THE HALF METHYL AND HALF ETHYL ESTERS OF THE SAID ETHERS, AND AN ELECTRICALLY CONDUCTIVE WATER BARRIER COAT CONTAINING POWDERED CONDUCTIVE CARBON WITH A RESIN BINDER AND LOCATED BETWEEN SAID BACKING AND SAID LITHOGRAPHIC SURFACE.
Claim 2
Dependent Claim
81 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING, A BACKING HAVING AN EXPOSED WATER INSOLUBLE, HYDROPHILIC LITHOGRAPHIC SURFACE COAT CONSISTING MAINLY OF A COPOLYMER OF MALEIC ACID AND ONE OR MORE VINYL ETHERS CHOSEN FROM THE GROUP CONSISTING OF VINYL METHYL ETHER, VINYL ETHYL ETHER, VINYL, ISOBUTYL ETHER, AND THE HALF METHYL AND HALF ETHYL ESTERS OF THE SAID ETHERS, AND AN ELECTRICALLY CONDUCTIVE WATER BARRIER COAT CONTAINING POWDERED CONDUCTIVE CARBON WITH A RESIN BINDER AND LOCATED BETWEEN SAID BACKING AND SAID LITHOGRAPHIC SURFACE.
Claim 3
Dependent Claim
35 words
A PLANOGRAPHIC PRINTING PLATE ACCORDING TO CLAIM 1 IN WHICH THE BACKING IS OF WET STRENGTH PAPER, AND IN WHICH ANOTHER CONDUCTIVE RESIN COATING IS LOCATED BETWEEN SAID WATER BARRIER COAT AND SAID LITHOGRAPHIC COAT.
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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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |