Patent US3690880A successfully refreshed from Google Patents.
US3690880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate coating compositions and long running planographic plates prepared therewith
Assignee: Richardson Co
•
Filing: 1970-12-11
•
Granted: 1972-09-12
•
Expires: 1990-12-11
Abstract
Abstract COMPOSITIONS COMPRISING THE REACTION PRODUCT OF A NOVEL, HIGHLY BRANCHED POLYALKYLENIMINE-UREA-ALDEHYDE RESIN AND A POLYACRYLIC RESIN PROVIDE USEFUL INTERMEDIATE COATINGS WHEN APPLIED TO PRECONDITIONED METAL SURFACES WHICH MAY BE SUBSEQUENTLY COATING WITH LIGHT SENSITIVE MATERIALS TO MAKE PHOTOLITHOGRAPHIC PLATES. THE INTERMEDIATE COATING, PARTICULARLY WHEN APPLIED TO A GRAINED OR UNGRAINED ALUMINUM SUPPORT MEMBER WHICH HAS BEEN ANODIZED AND FINALLY COATED WITH LIGHT SENSITIVE MATERIALS PRODUCES A HIGHLY DURABLE PLATE THAT POSSESS GOOD STORAGE CHARACTERISTICES AND IS CAPABLE OF UNUSUALLY EXTENDED PRESS RUNS.
Inventors
- 👤 Thaddeus M Muzyczko
- 👤 Ronald A Frederiksen
- 👤 David L York
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:48
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/036; C; C08; C08F; C08F8/00; C08F8/30; B41C; B41C1/00; B41C1/10; B41C1/1008; B41C1/1016; B41C2201/00; B41C2201/04; B41C2201/14; B41C2210/00; B41C2210/04; B41C2210/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |