Patent US3078221A successfully refreshed from Google Patents.
Patent US3334584A successfully refreshed from Google Patents.
US3334584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lithographic printing plates
Assignee: WILLIAM C TOLAND
•
Filing: 1962-09-24
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Granted: 1967-08-08
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Benjamin L Sites
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:45
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; G03F7/016; G03F7/021; G03F7/0212; G03F7/0215; G03F7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SUBSTANTIALLY NON-RETICULATED GELATIN PRINTING PLATE, SAID PLATE, AFTER EXPOSURE TO LIGHT AND DEVELOPMENT, COMPRISING AN ONLY PARTIALLY HARDENED COATING SUPPORTED ON A BASE MEMBER, SAID COATING CARRYING MOISTURE AND A REACTED LIGHT SENSITIZER AND COMPRISING A COMPLEX RESULTING FROM THE REACTION OF GELATIN AND A WATER-SOLUBLE POLYCARBOXYLIC ACID IN THE PRESENCE OF A WATER-SOLUBLE POLYHYDRIC ALCOHOL CONTAINING FROM 3 TO 8 HYDROXY GROUPS.
Claim 2
Dependent Claim
64 words
A SUBSTANTIALLY NON-RETICULATED GELATIN PRINTING PLATE, SAID PLATE, AFTER EXPOSURE TO LIGHT AND DEVELOPMENT, COMPRISING AN ONLY PARTIALLY HARDENED COATING SUPPORTED ON A BASE MEMBER, SAID COATING CARRYING MOISTURE AND A REACTED LIGHT SENSITIZER AND COMPRISING A COMPLEX RESULTING FROM THE REACTION OF GELATIN AND A WATER-SOLUBLE POLYCARBOXYLIC ACID IN THE PRESENCE OF A WATER-SOLUBLE POLYHYDRIC ALCOHOL CONTAINING FROM 3 TO 8 HYDROXY GROUPS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |