US3269837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive salts of omicron-naphthoquinone diazide sulfonic acid with an amine and the preparation of printing plates therefrom
Assignee: Azoplate Corp
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Filing: 1964-10-01
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Granted: 1966-08-30
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR MAKING A PRINTING PLATE WHICH COMPRISES EXPOSING A SUPPORTED LIGHT-SENSITIVE LAYER TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING IMAGE WITH AN AQUEOUS ALKALINE DEVELOPING SOLUTION, THE LAYER COMPRISING A SALT, WHICH IS AT MOST SPARINGLY SOLUBLE IN WATER, OF AN O-NAPTHOQUINONE DIAZIDE SULFONIC ACID WITH AN AMINE, THE LATTER CONTAINING AT LEAST SIX LINKED CARBON ATOMS BUT NO HETEROCYCLIC NITROGEN ATOM.
Claim 2
Dependent Claim
66 words
A PROCESS FOR MAKING A PRINTING PLATE WHICH COMPRISES EXPOSING A SUPPORTED LIGHT-SENSITIVE LAYER TO LIGHT UNDER A MASTER AND DEVELOPING THE RESULTING IMAGE WITH AN AQUEOUS ALKALINE DEVELOPING SOLUTION, THE LAYER COMPRISING A SALT, WHICH IS AT MOST SPARINGLY SOLUBLE IN WATER, OF AN O-NAPTHOQUINONE DIAZIDE SULFONIC ACID WITH AN AMINE, THE LATTER CONTAINING AT LEAST SIX LINKED CARBON ATOMS BUT NO HETEROCYCLIC NITROGEN ATOM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |