US2804388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic plate and method of manufacturing same
Assignee: AB Dick Co
•
Filing: 1952-11-28
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Granted: 1957-08-27
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Expires: 1972-11-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas U Marron
- 👤 James L Diedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/075; G03F7/0752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A POSITIVE WORKING LITHOGRAPHIC PLATE COMPRISING A BACKING SHEET, A WATER RECEPTIVE, INK REPELLENT LITHOGRAPHIC SURFACE ON THE SHEET, A COATING ON THE LITHOGRAPHIC SURFACE CONTAINING LIGHT SENSITIVE DIAZO FLUOBORATE WHICH RELEASE HYDROFLUORIC ACID BY REACTION WITH ULTRAVIOLET LIGHT AND AN ORGANO-SILANE COMPOUND SELECTED FROM THE GROUP CONSISTING OF A SILANE AND A POLYSILOXANE PRESENT IN AN AMOUNT TO RENDER THE COATED SURFACE INK RECEPTIVE AND WATER REPELLENT UNTIL REACTED WITH THE HYDROFLUORIC ACID RELEASED BY THE DIAZO FLUOBORATE IN THE EXPOSED AREA.
Claim 2
Dependent Claim
83 words
A POSITIVE WORKING LITHOGRAPHIC PLATE COMPRISING A BACKING SHEET, A WATER RECEPTIVE, INK REPELLENT LITHOGRAPHIC SURFACE ON THE SHEET, A COATING ON THE LITHOGRAPHIC SURFACE CONTAINING LIGHT SENSITIVE DIAZO FLUOBORATE WHICH RELEASE HYDROFLUORIC ACID BY REACTION WITH ULTRAVIOLET LIGHT AND AN ORGANO-SILANE COMPOUND SELECTED FROM THE GROUP CONSISTING OF A SILANE AND A POLYSILOXANE PRESENT IN AN AMOUNT TO RENDER THE COATED SURFACE INK RECEPTIVE AND WATER REPELLENT UNTIL REACTED WITH THE HYDROFLUORIC ACID RELEASED BY THE DIAZO FLUOBORATE IN THE EXPOSED AREA.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |