Patent US3679414A successfully refreshed from Google Patents.
US3679414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic plate and method
Assignee: 3M Co
•
Filing: 1969-08-04
•
Granted: 1972-07-25
•
Expires: 1989-08-04
Abstract
Abstract A LITHOGRAPHIC PLATE COMPRISES A HYDROPHILIC BACKING HAVING AN ALEOPHILIC SOLVENT-REMOVABLE COATING WHICH BECOMES SOLVENT-RESISTANT WHEN HEATED IN REACTIVE ASSOCIATION WITH AN OXIDIZING AGENT. THE COATING COMPRISES A POLYPHENOLIC REDUCING AGENT TOGETHER WITH A LESSER AMOUNT OF CHEMICALLY INERT FILM-FORMING BINDER.
Inventors
- 👤 Joan M W Mukherjee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:41
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; B; B41; B41C; B41C1/00; B41C1/10; B41C1/1008; B41C2210/00; B41C2210/04; B41C2210/22; B41C2210/24; B41C2210/26; B41C2210/262
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |