US3126281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formula
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
A PROCESS FOR DEVELOPING A PRINTING PLATE WHICH COMPRISES EXPOSING A SUPPORTED LIGHT-SENSITIVE LAYER TO LIGHT UNDER A MASTER, THE LAYER COMPRISING AN ORTHOQUINONE DIAZIDE COMPOUND AND IN ADMIXTURE THEREWITH, A SOLID AROMATIC PRIMARY AMINE IN PROPORTIONS SUCH THAT AT LEAST ONE AMINO GROUP IS PRESENT FOR AT LEAST ONE OF THE ORTHOQUINONE DIAZIDE GROUPS, THE AMINE UPON EXPOSURE OF THE PLATE TO LIGHT REACTING TO FORM AN ACID AMIDE HAVING A RELATIVE HIGH MOLECULAR WEIGHT AND A LOW DEGREE OF SOLUBILITY IN A DEVELOPER SOLUTION, AND REMOVING THE LAYER IN THOSE AREAS NOT AFFECTED BY THE LIGHT BY TREATMENT OF THE LAYER WITH A DEVELOPER SOLUTION.
References Cited (Backward Citations)
DE596731C
Cited
GB699412A
Cited
GB706028A
Cited
US2702243A
Cited
GB706879A
Cited
US3007795A
Cited
US2794388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |