US2721815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing improved planographic printing plates
Assignee: AB Dick Co
•
Filing: 1951-01-19
•
Granted: 1955-10-25
•
Expires: 1971-01-19
Abstract
No abstract record available.
Inventors
- 👤 William G Mullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
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
65 words
IN THE PROCESS OF FABRICATING A PAPER-BASE PLANOGRAPHIC PRINTING PLATE WITH TWO OR MORE SUPERPOSED HYDROPHILIC COLLOID COATINGS, THE STEPS OF DRYING AN UNDERLYING HYDROPHILIC COLLOID COATING, WETTING THE SURFACE OF THE DRIED COATING WITH WATER, REMOVING THE EXCESS OF THE AQUEOUS WETTING COMPOSITION, AND THEN APPLYING THE COLLOID COATING COMPOSITION FOR FORMING THE NEXT WHILE THE SURFACE OF THE UNDERLYING COATING IS STILL WET.
Claim 2
Dependent Claim
65 words
IN THE PROCESS OF FABRICATING A PAPER-BASE PLANOGRAPHIC PRINTING PLATE WITH TWO OR MORE SUPERPOSED HYDROPHILIC COLLOID COATINGS, THE STEPS OF DRYING AN UNDERLYING HYDROPHILIC COLLOID COATING, WETTING THE SURFACE OF THE DRIED COATING WITH WATER, REMOVING THE EXCESS OF THE AQUEOUS WETTING COMPOSITION, AND THEN APPLYING THE COLLOID COATING COMPOSITION FOR FORMING THE NEXT WHILE THE SURFACE OF THE UNDERLYING COATING IS STILL WET.
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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) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |