Patent US1210639A successfully refreshed from Google Patents.
US2647883A
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Copolymers of vinyl phenols with butadiene compounds
Assignee: British Resin Products Ltd
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Filing: 1950-01-10
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Granted: 1953-08-04
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Expires: 1970-01-10
Abstract
No abstract record available.
Inventors
- 👤 Evans Edward Michael
- 👤 Whitney John Edward Seager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:55
CPC Classifications
C; C08; C08F; C08F240/00; C08F16/00; C08F16/02; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/22; C08F212/24; C08F236/00; C08F236/02; C08F236/04; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE PRODUCTION OF A SYNTHETIC RESIN WHICH COMPRISES POLYMERISING IN THE PRESENCE OF A CATALYST A MIXTURE OF A VINYL PHENOL COMPOUND SELECTED FROM THE GROUP CONSISTING OF META- AND PARA-VINYL PHENOLS AND LOWER ALKYLNUCLEAR-SUBSTITUTED META- AND PARA-VINYL PHENOLS, WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, ISOPRENE, DIMETHYL BUTADIENE AND CHLOROPRENE, SAID COMPOUNDS OF THE MIXTURE BEING THE SOLE POLYMERISABLE COMPOUNDS EMPLOYED.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE PRODUCTION OF A SYNTHETIC RESIN WHICH COMPRISES POLYMERISING IN THE PRESENCE OF A CATALYST A MIXTURE OF A VINYL PHENOL COMPOUND SELECTED FROM THE GROUP CONSISTING OF META- AND PARA-VINYL PHENOLS AND LOWER ALKYLNUCLEAR-SUBSTITUTED META- AND PARA-VINYL PHENOLS, WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, ISOPRENE, DIMETHYL BUTADIENE AND CHLOROPRENE, SAID COMPOUNDS OF THE MIXTURE BEING THE SOLE POLYMERISABLE COMPOUNDS EMPLOYED.
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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |