Patent US3288901A successfully refreshed from Google Patents.
US2760431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic plates and methods for manufacturing same
Assignee: AB Dick Co
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Filing: 1952-06-19
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Granted: 1956-08-28
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Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 Julian L Beatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:07
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/10; B41C1/1091; B41N; B41N3/00; B41N3/03; B41N3/036; Y; Y10; Y10S; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A BASE SHEET AND A CONTINUOUS, WATER INSOLULE LITHOGRAPHIC SURFACE LAYER ON THE BASE SHEET IN THE FORM OF A COATING COMPRISING THE REACTION PRODUCT OF THE COMBINATIN IN ADMIXTURE OF AN INERT FILLER, POLYACRYLIC ACID AND ZINC OXIDE AND AN INK RECEPTIVE, WATER REPELLENT, HYDROPHOBIC IMAGING MATERIAL IN THE FORM OF A MECHANICALLY APPLIED IMAGE ANCHORED ONTO THE UNDERLYING CONTINUOUS, WATER INSOLUBLE SURFACE LAYER.
Claim 2
Dependent Claim
70 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A BASE SHEET AND A CONTINUOUS, WATER INSOLULE LITHOGRAPHIC SURFACE LAYER ON THE BASE SHEET IN THE FORM OF A COATING COMPRISING THE REACTION PRODUCT OF THE COMBINATIN IN ADMIXTURE OF AN INERT FILLER, POLYACRYLIC ACID AND ZINC OXIDE AND AN INK RECEPTIVE, WATER REPELLENT, HYDROPHOBIC IMAGING MATERIAL IN THE FORM OF A MECHANICALLY APPLIED IMAGE ANCHORED ONTO THE UNDERLYING CONTINUOUS, WATER INSOLUBLE SURFACE LAYER.
Claim 3
Independent Claim
161 words
THE METHOD OF MANUFACTURING A PLANOGRAPHIC PRINTING PLATE COMPRISING THE STEPS OF COATING A BASE SHEET TO PROVIDE A CONTINUOUS LITHOGRAPHIC SURFACE LAYER WITH A COMPOSITION CONTAINING INERT FILLER, POLYACRYLIC ACID, A WATER SOLUBLE BIVALENT METAL SALT WHICH FORMS A WATER INSOLUBLE POLYACRYLATE AND A WATER SOLUBLE, WATER STABLE COMPLEX DOUBLE SALT WITH THE POLYACRYLATE IN THE PRESENCE OF SUFFICIENT AMMONIA AND PRESENT IN THE RATIO OF 1 PART BY WEIGHT METAL SALT TO 2 TO 20 PARTS BY WEIGHT FILLER AND 1 PART BY WEIGHT POLYACRYLIC ACID TO 2 TO 10 PARTS BY WEIGHT FILLER PLUS METAL SALT AND SUFFICIENT AMMONIUM ION PRESENT IN THE COMPOSITION TO MAINTAIN THE METAL SALT AND POLYACRYLIC ACID IN SOLUTION, AND DRYING THE COATING ON THE BASE SHEET TO FORM A HYDROPHILIC, LITHOGRAPHIC SURFACE WHICH BECOMES WATER INSOLUBLE PON ELIMINATION OF AMMONIA AND MECHANICALLY APPLYING TO SAID CONTINUOUS LITHOGRAPHIC SURFACE LAYER AN IMAGE IN THE FORM OF A WATER REPELLENT, HYDROPHOBIC, INK RECEPTIVE MATERIAL.
Claim 4
Independent Claim
161 words
THE METHOD OF MANUFACTURING A PLANOGRAPHIC PRINTING PLATE COMPRISING THE STEPS OF COATING A BASE SHEET TO PROVIDE A CONTINUOUS LITHOGRAPHIC SURFACE LAYER WITH A COMPOSITION CONTAINING INERT FILLER, POLYACRYLIC ACID, A WATER SOLUBLE BIVALENT METAL SALT WHICH FORMS A WATER INSOLUBLE POLYACRYLATE AND A WATER SOLUBLE, WATER STABLE COMPLEX DOUBLE SALT WITH THE POLYACRYLATE IN THE PRESENCE OF SUFFICIENT AMMONIA AND PRESENT IN THE RATIO OF 1 PART BY WEIGHT METAL SALT TO 2 TO 20 PARTS BY WEIGHT FILLER AND 1 PART BY WEIGHT POLYACRYLIC ACID TO 2 TO 10 PARTS BY WEIGHT FILLER PLUS METAL SALT AND SUFFICIENT AMMONIUM ION PRESENT IN THE COMPOSITION TO MAINTAIN THE METAL SALT AND POLYACRYLIC ACID IN SOLUTION, AND DRYING THE COATING ON THE BASE SHEET TO FORM A HYDROPHILIC, LITHOGRAPHIC SURFACE WHICH BECOMES WATER INSOLUBLE PON ELIMINATION OF AMMONIA AND MECHANICALLY APPLYING TO SAID CONTINUOUS LITHOGRAPHIC SURFACE LAYER AN IMAGE IN THE FORM OF A WATER REPELLENT, HYDROPHOBIC, INK RECEPTIVE MATERIAL.
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |