Patent US3160506A successfully refreshed from Google Patents.
US3160506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planographic printing plate and method for preparing same
Assignee: Polychrome Corp
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Filing: 1962-10-19
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Granted: 1964-12-08
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Gerald F O'connor
- 👤 Simon L Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:38
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD OF MAKING AN ALUMINUM BASE PLANOGRAPHIC PRINTING PLATE COMPRISING TREATING A DEGREASED ALUMINUM SHEET WITH AN AQUEOUS SOLUTION OF FROM 0.01% TO 1% POTASSIUM ZIRCONIUM HEXAFLUORIDE AT A TEMPERATURE BETWEEN 70*F. AND 180*F. TO FORM A HYDROPHILIC SURFACE THEREON, SUBSEQUENTLY SEALING SAID HYDROPHILLIC SURFACE BY TREATING THE PLATE WITH A CHROMIC ACID BATH CONTAINING FROM 0.001% TO 2.5% CRO3 AT A TEMPERATURE BETWEEN 70*F. AND 180*F., APPLYING A LIGHT-SENSITIVE DIAZO RESIN COATING OVER THE RESULTING SEALED HYDROPHILIC LAYER, SAID DIAZO RESIN COMPRISING THE CONDENSATION PRODUCT OF PARAFORMALDEHYDE AND PARADIAZODIPHENYLAMINE, EXPOSING THE THUS SENSITIZED PLATE TO ACTINIC LIGHT AND TREATING THE EXPOSED PLATE TO PRODUCE AN ADHERING OLEOPHILIC IMAGE THEREON.
Claim 2
Independent Claim
111 words
A METHOD OF MAKING AN ALUMINUM BASE PLANOGRAPHIC PRINTING PLATE COMPRISING TREATING A DEGREASED ALUMINUM SHEET WITH AN AQUEOUS SOLUTION OF FROM 0.01% TO 1% POTASSIUM ZIRCONIUM HEXAFLUORIDE AT A TEMPERATURE BETWEEN 70*F. AND 180*F. TO FORM A HYDROPHILIC SURFACE THEREON, SUBSEQUENTLY SEALING SAID HYDROPHILLIC SURFACE BY TREATING THE PLATE WITH A CHROMIC ACID BATH CONTAINING FROM 0.001% TO 2.5% CRO3 AT A TEMPERATURE BETWEEN 70*F. AND 180*F., APPLYING A LIGHT-SENSITIVE DIAZO RESIN COATING OVER THE RESULTING SEALED HYDROPHILIC LAYER, SAID DIAZO RESIN COMPRISING THE CONDENSATION PRODUCT OF PARAFORMALDEHYDE AND PARADIAZODIPHENYLAMINE, EXPOSING THE THUS SENSITIZED PLATE TO ACTINIC LIGHT AND TREATING THE EXPOSED PLATE TO PRODUCE AN ADHERING OLEOPHILIC IMAGE THEREON.
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |