US3679412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic printing plates and methods for preparation thereof
Assignee: ANTHONY J PARRINELLO
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Filing: 1970-05-04
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Granted: 1972-07-25
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Expires: 1990-05-04
Abstract
Abstract LITHOGRAPHIC PLATES ARE PREPARED BY (A) PROVIDING METALLIC SUPPORT WITH GELATINOUS IMAGE; (B) TREATING THE GELATINOUS IMAGE WITH AN AQUEOUS SOLUTION COMPRISING DICHROMATE, HALIDE, AND ACETIC ACID; AND (C) SUBJECTING THE TREATED IMAGE TO HEAT.
Inventors
- 👤 William E Guthrie
- 👤 Anthony J Parrinello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:12
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/063
Claims Analysis
Total Claims: 0
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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 |