US2684305A
Expired / Lapsed
US
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Process of effecting polymerization
Assignee: Celastic Corp
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Filing: 1951-01-09
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Granted: 1954-07-20
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Expires: 1971-01-09
Abstract
No abstract record available.
Inventors
- 👤 Quinlivan Quentin Leroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:19
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
THE PROCESS WHICH COMPRISES (1) FORMINGG A SHEET MATERIAL WHICH IS FREE OF LIQUID ON ITS SURFACE AND WHICH HAS EVENLY DISTRIBUTED THROUGHOUT THE INTERIOR OF SAID SHEET MATERIAL A LIQUID, ETHYLENICALLY UNSATURATED, ORGANIC COMPOUND, CAPABLE OF BEING POLYMERIZED UNDER THE HEREINAFTER SPECIFIED CONDITIONS OF POLYMERIZATTION, AND BEING FREE OF POLYMERIZATION CATALYST, (2) APPLYING TO THE SURFACE ONLY OF SAID SHEET MATERIAL A DRY LAYER OF SOLID CATALYST FROM THE GROUP CONSISTING OF THERMAL POLYMERIZATION CATALYSTS AND PHOTOPOLYMERIZATION CATALYSTS BY DUSTING SAID SURFACE WITH SAID CATALYST IN A FINELY-DIVIDED FORM, (3) SUBJECTING THE RESULTANT CATALYSTTEATED SHEET MATERIAL TO THE ACTION OF RADIANT ENERGY CAPABLE OF POLYMERIZING SUBSTANTIALLY ALL OF SAID LIQUID ORGANIC COMPOUND TO A SOLID FORM, AND (4) RECOVERING SAID SHEET MATERIAL IN A STIFFENED FORM.
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |