US3549372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic printing surface
Assignee: Imperial Metal and Chemical Co
•
Filing: 1966-01-13
•
Granted: 1970-12-22
•
Expires: 1986-01-13
Abstract
No abstract record available.
Inventors
- 👤 Isadore M Richlin
- 👤 Elmer S Bornemisza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:04
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/038
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A LITHOGRAPHIC PLATE COMPRISING A SUPPORT MEMBER HAVING A HYDROXYLATED SURFACE, A HYDROPHILLIC BARRIER COATING ON SAID SUPPORT COMPRISING THE REACTION PRODUCT OF SAID HYDROXYLATED SURFACE AND A METAL CHELATE ESTER OF A GROUP IVB METAL AND AN ALCOHOLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF GLYCOLS AND ALKANOL AMINES, AND A LIGHT-SENSITIVE COATING OVER SAID HYDROGPHILIC BARRIER COATING.
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |