US3238086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite for preparing flexible printing plates
Assignee: WR Grace and Co
•
Filing: 1962-05-21
•
Granted: 1966-03-01
•
Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Norman G Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:25
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/12; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/266; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/676
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN ASSEMBLED COMPOSITE SUITABLE FOR PREPARING FLEXIBLE LETTERPRESS PRINTING PLATES WHICH COMPRISES A BASE THIN SHEET OF A NON-POROUS MATERIAL, A SHEET OF POROUS, FLEXIBLE COMPRESSIBLE MATERIAL DISPOSED ON THE BASE SHEET, A LIQUID THERMOSETTING POLYMERIC COMPOSITION DISPOSED ON AND ABSORBED BY THE POROUS MATERIAL, SAID COMPOSITION BEING COMPRISED OF (1) A HALOGEN-CONTAINING POLYMER, (2) A PRODUCT DERIVED BY REACTING AN EPOSIDIZED ESTER AND AN IMIDAZOLINE, (3) A MOISTURE-SEQUESTERING AGENT AND (4) ZINC OXIDE, AND A SECOND THIN SHEET OF A NON-POROUS MATERIAL SUPERPOSED ON THE LIQUID COMPOSITION.
Claim 2
Dependent Claim
88 words
AN ASSEMBLED COMPOSITE SUITABLE FOR PREPARING FLEXIBLE LETTERPRESS PRINTING PLATES WHICH COMPRISES A BASE THIN SHEET OF A NON-POROUS MATERIAL, A SHEET OF POROUS, FLEXIBLE COMPRESSIBLE MATERIAL DISPOSED ON THE BASE SHEET, A LIQUID THERMOSETTING POLYMERIC COMPOSITION DISPOSED ON AND ABSORBED BY THE POROUS MATERIAL, SAID COMPOSITION BEING COMPRISED OF (1) A HALOGEN-CONTAINING POLYMER, (2) A PRODUCT DERIVED BY REACTING AN EPOSIDIZED ESTER AND AN IMIDAZOLINE, (3) A MOISTURE-SEQUESTERING AGENT AND (4) ZINC OXIDE, AND A SECOND THIN SHEET OF A NON-POROUS MATERIAL SUPERPOSED ON THE LIQUID COMPOSITION.
References Cited (Backward Citations)
US2482086A
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US2476832A
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US2606851A
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US2559177A
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |