US3147705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible printing plates with improved printing surfaces
Assignee: WR Grace and Co
•
Filing: 1961-08-07
•
Granted: 1964-09-08
•
Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 John F Broderick
- 👤 Norman G Tompkins
- 👤 Nimoy Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:01
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/12; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PERMANENTLY FLEXIBLE LETTERPRESS PRINTING PLATE COMPRISING A FLEXIBLE THERMOSET POLYMERIC BODY PORTION BEARING RELIEVED INDICIA ON ITS FACE, SAID BODY PORTION COMPRISING A HALOGEN-CONTAINING POLYMER AND THE PRODUCT DERIVED BY REACTING AN EPOXIDIZED ESTER AND AND AN IMIDAZOLINE, AND A SKIN SHEET OF FLEXIBLE POLYVINYL CHLORIDE FIRMLY BONDED TO SAID FACE, SAID SKIN SHEET APPEARING CONTINUOUS WITH THE PRINTING FACE OF THE BODY PORTION.
Claim 2
Dependent Claim
65 words
A PERMANENTLY FLEXIBLE LETTERPRESS PRINTING PLATE COMPRISING A FLEXIBLE THERMOSET POLYMERIC BODY PORTION BEARING RELIEVED INDICIA ON ITS FACE, SAID BODY PORTION COMPRISING A HALOGEN-CONTAINING POLYMER AND THE PRODUCT DERIVED BY REACTING AN EPOXIDIZED ESTER AND AND AN IMIDAZOLINE, AND A SKIN SHEET OF FLEXIBLE POLYVINYL CHLORIDE FIRMLY BONDED TO SAID FACE, SAID SKIN SHEET APPEARING CONTINUOUS WITH THE PRINTING FACE OF THE BODY PORTION.
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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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |