US3265504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treated lithographic plates and their production
Assignee: —
•
Filing: 1963-12-13
•
Granted: 1966-08-09
•
Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:21
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/036
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
69 words
A DIMENSIONALLY STABLE BASE SUPPORT UTILIZABLE FOR LITHOGRAPHIC PLATEMAKING COMPRISING A METAL SHEET WHICH IS GRAINED AND PROVIDED ON AT LEAST ONE SIDE THEREOF WITH A THIN TIGHTLY BONDED DURABLE HYDROPHILIC SURFACE OBTAINED BY THE SIMULTANEOUS SUBJECTION OF SAID METAL SHEET TO MECHANICAL AND CHEMICAL TREATMENT WITH AN ABRASIVE AND WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE BICHROMATE SALT AND A WATER DISPERSIBLE HYDROPHILIC ORGANIC POLYMER FOLLOWED BY DRYING.
Claim 2
Dependent Claim
69 words
A DIMENSIONALLY STABLE BASE SUPPORT UTILIZABLE FOR LITHOGRAPHIC PLATEMAKING COMPRISING A METAL SHEET WHICH IS GRAINED AND PROVIDED ON AT LEAST ONE SIDE THEREOF WITH A THIN TIGHTLY BONDED DURABLE HYDROPHILIC SURFACE OBTAINED BY THE SIMULTANEOUS SUBJECTION OF SAID METAL SHEET TO MECHANICAL AND CHEMICAL TREATMENT WITH AN ABRASIVE AND WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE BICHROMATE SALT AND A WATER DISPERSIBLE HYDROPHILIC ORGANIC POLYMER FOLLOWED BY DRYING.
Claim 3
Dependent Claim
41 words
A PRESENSITIZED LITHOGRAPHIC PLATE CAPABLE OF BEING STORED FOR PERIODS UP TO SEVERAL MONTHS WITHOUT LOSS OF PHOTOGRAPHIC SENSITIVITY WHICH COMPRISES A MECHANICALLY GRAINED AND CHEMICALLY TREATED SHEET ACCORDING TO CLAIM 1 HAVING THEREON A COATING OF A LIGHT-SENSITIVE DIAZO RESIN.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |