US3294533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Presensitized printing plate and process of developing printing plate
Assignee: Azoplate Corp
•
Filing: 1963-04-29
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Granted: 1966-12-27
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
- 👤 Steppan Hartmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:48
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A PROCESS FOR DEVELOPING A PRINTING PLATE WHICH COMPRISES EXPOSING A LIGHT SENSITIVE LAYER, ON A NON-METALLIC BASE, TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING IMAGE BY TREATMENT WITH AN AQUEOUS DEVELOPER, THE LIGHT SENSITIVE LAYER COMPRISING THE HEXAFLUOPHOSPHATE OF AT LEAST ONE POLYFUUNCTIONAL DIAZONIUM SALT OBTAINED BY THE ACID CONDENSATION OF A DIPHENYLAMINE-4-DIAZONIUM SALT WITH A COMPOUND SELECTED FROM THE GOUP CONSISTING OF AN ALDEHYDE AND A KETONE, THE LAYER CONTAINING SUBSTANTIALLY NO EXCESS OF A STRONG ACID.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |