US2532866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and plate for lithographic printing
Assignee: Individual
•
Filing: 1947-12-06
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Granted: 1950-12-05
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Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Toland William Craig
- 👤 Munroe H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; B; B41; B41N; B41N3/00; B41N3/03; B41N3/036; B41C; B41C1/00; B41C1/10; B41C1/1008; B41C2210/00; B41C2210/04; B41C2210/08; B41C2210/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
AN IMPROVED PRINTING PLATE OF THE LITHOGRAPHIC PRINTING CLASS FOR USE IN A PRINTING MACHINE WHEREIN THE SURFACE OF THE PLATE IS ALTERNATELY MOVED INTO CONTACT WITH A WATER ROLLER AND A GREASY INKING ROLLER, SAID PLATE COMPRISING A FLEXIBLE BASE MEMBER, A THIN HYDROPHILIC COATING OF COLLOIDAL MATERIAL BONDED TO THE BASE MEMBER, SAID COATING INCLUDING AT ITS EXPOSED SURFACE AREA RELATIVELY HARD GREASE RECEPTIVE PRINTING PORTIONS AND RELATIVELY YIELDABLE WATER RECEPTIVE NON-PRINTING PORTIONS, SCUM RETARDANT MEANS IN THE NON-PRINTING PORTIONS OPERATIVE IN THE PRESENCE OF MOISTURE APPLIED THERETO FROM THE WATER ROLLER TO REPEL ADHESION OF SMALL AMOUNTS OF GREASY INK TO THE SAID NON-PRINTING PORTIONS WHEN THE LATTER ARE CONTACTED BY THE INKING ROLLER, SAID SCUM RETARDANT MEANS COMPRISING A WATER-SOLUBLE DIBASIC ACID OCCURRING IN THE FORM OF A FINELY DIVIDED SOLID WHICH IS DISTRIBUTED THROUGHT THE NON-PRINTING PORTIONS.
Claim 2
Dependent Claim
142 words
AN IMPROVED PRINTING PLATE OF THE LITHOGRAPHIC PRINTING CLASS FOR USE IN A PRINTING MACHINE WHEREIN THE SURFACE OF THE PLATE IS ALTERNATELY MOVED INTO CONTACT WITH A WATER ROLLER AND A GREASY INKING ROLLER, SAID PLATE COMPRISING A FLEXIBLE BASE MEMBER, A THIN HYDROPHILIC COATING OF COLLOIDAL MATERIAL BONDED TO THE BASE MEMBER, SAID COATING INCLUDING AT ITS EXPOSED SURFACE AREA RELATIVELY HARD GREASE RECEPTIVE PRINTING PORTIONS AND RELATIVELY YIELDABLE WATER RECEPTIVE NON-PRINTING PORTIONS, SCUM RETARDANT MEANS IN THE NON-PRINTING PORTIONS OPERATIVE IN THE PRESENCE OF MOISTURE APPLIED THERETO FROM THE WATER ROLLER TO REPEL ADHESION OF SMALL AMOUNTS OF GREASY INK TO THE SAID NON-PRINTING PORTIONS WHEN THE LATTER ARE CONTACTED BY THE INKING ROLLER, SAID SCUM RETARDANT MEANS COMPRISING A WATER-SOLUBLE DIBASIC ACID OCCURRING IN THE FORM OF A FINELY DIVIDED SOLID WHICH IS DISTRIBUTED THROUGHT THE NON-PRINTING PORTIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |