US3323451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for producing planographic photoelectrostatic printing plates
Assignee: AB Dick Co
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Filing: 1966-03-21
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Granted: 1967-06-06
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Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Carl W Casey
- 👤 Lawrence R Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:25
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
THE METHOD OF CONVERTING A PHOTOELECTROSTATIC COPY SHEET HAVING INK-RECEPTIVE IMAGE AREAS AND NON-IMAGE AREAS TO A PLANOGRAPHIC PRINTING PLATE, SAID COPY SHEET INCLUDING A LAYER COMPRISING PHOTOCONDUCTIVE ZINC OXIDE PARTICLES DISPERSED IN AN INSULATING RESIN BINDER COMPRISING THE STEP OF APPLYING TO THE COPY SHEET AN AQUEOUS SOLUTION CONTAINING A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM MONO-BASIC PHOSPHATE AND AMMONIUM MONO-BASIC PHOSPHATE, THE PH OF SAID AQUEOUS SOLUTION BEING ADJUSTED WITHIN THE RANGE OF 4.5 TO 6.0 BY THE ADDITION OF A BASIC COMPONENT WHEREBY NON-IMAGE AREAS OF THE COPY SHEET ARE RENDERED WATER RECEPTIVE.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |