US3307951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic plate
Assignee: Lithoplate Inc
•
Filing: 1963-02-01
•
Granted: 1967-03-07
•
Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Dolor N Adams
- 👤 Daniel C Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:34
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A LITHOGRAPHIC PLATE HAVING A SUPPORT MEMBER, AN OVERLYING LAYER OF A LIGHT SENSITIVE COATING AND AN INTERMEDIATE COAT BETWEEN SAID SUPPORT MEMBER AND LIGHT SENSITIVE COATING, THE IMPROVEMENT CHARACTERIZED BY PROVIDING AS SAID COAT A SUBSTANTIALLY WATER INSOLUBLE COATING PRODUCED BY APPLYING TO SAID SUPPORT MEMBER A COMPOSITION COMPRISING A CYCLOALIPHATIC POLYPHOSPHORIC ACID OF THE NATURE OF PHYTIC ACID, SAID SUPPORT MEMBER BEING SUBSTANTIVE TO SAID ACID.
Claim 2
Dependent Claim
69 words
IN A LITHOGRAPHIC PLATE HAVING A SUPPORT MEMBER, AN OVERLYING LAYER OF A LIGHT SENSITIVE COATING AND AN INTERMEDIATE COAT BETWEEN SAID SUPPORT MEMBER AND LIGHT SENSITIVE COATING, THE IMPROVEMENT CHARACTERIZED BY PROVIDING AS SAID COAT A SUBSTANTIALLY WATER INSOLUBLE COATING PRODUCED BY APPLYING TO SAID SUPPORT MEMBER A COMPOSITION COMPRISING A CYCLOALIPHATIC POLYPHOSPHORIC ACID OF THE NATURE OF PHYTIC ACID, SAID SUPPORT MEMBER BEING SUBSTANTIVE TO SAID ACID.
References Cited (Backward Citations)
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Cited
US2846336A
Cited
US3007818A
Cited
US3073723A
Cited
US2946683A
Cited
US3030210A
Cited
US3070460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |