US2569488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously renewing lithographic printing surfaces by means of the fountain fluid
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
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Filing: 1947-03-11
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Granted: 1951-10-02
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Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:53
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE PROCESS OF PLANOGRAPHIC PRINTING WHICH COMPRISES FORMING AN INK-RECEPTIVE WATER-REPELLENT IMAGE ON A PLANOGRAPHIC PLATE HAVING ITS PRINTING SURFACE COATED WITH A WATER-INSOLUBLE CARBOXYMETHYL CELLULOSE COMPOUND, DAMPENING SAID PLATE WITH AN AQUEOUS FLUID COMPRISING WATER AND A COLLOIDAL THICKENER CONSISTING ESSENTIALLY OF A CARBOXYMETHYL CELLULOSE COMPOUND DISSOLVED THEREIN IN AN AMOUNT YIELDING THE DESIRED VISCOSITY, INKING SAID PLATE TO DEPOSIT INK ON THE IMAGE PORTION THEREOF, TRANSFERRING THE INK FROM SAID IMAGE TO A COPY SHEET, AND SUCCESSIVELY REPEATING SAID DAMPENING INKING AND TRANSFER OPERATIONS.
Claim 2
Dependent Claim
86 words
THE PROCESS OF PLANOGRAPHIC PRINTING WHICH COMPRISES FORMING AN INK-RECEPTIVE WATER-REPELLENT IMAGE ON A PLANOGRAPHIC PLATE HAVING ITS PRINTING SURFACE COATED WITH A WATER-INSOLUBLE CARBOXYMETHYL CELLULOSE COMPOUND, DAMPENING SAID PLATE WITH AN AQUEOUS FLUID COMPRISING WATER AND A COLLOIDAL THICKENER CONSISTING ESSENTIALLY OF A CARBOXYMETHYL CELLULOSE COMPOUND DISSOLVED THEREIN IN AN AMOUNT YIELDING THE DESIRED VISCOSITY, INKING SAID PLATE TO DEPOSIT INK ON THE IMAGE PORTION THEREOF, TRANSFERRING THE INK FROM SAID IMAGE TO A COPY SHEET, AND SUCCESSIVELY REPEATING SAID DAMPENING INKING AND TRANSFER OPERATIONS.
References Cited (Backward Citations)
US2003268A
Cited
US2060190A
Cited
US2186846A
Cited
US2240486A
Cited
US2331245A
Cited
US2393875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |