Patent US3122501A successfully refreshed from Google Patents.
Patent US2671079A successfully refreshed from Google Patents.
US2671079A
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Phosphorus-containing polymers
Assignee: EIDP Inc
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Filing: 1951-08-07
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Granted: 1954-03-02
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Expires: 1971-08-07
Abstract
No abstract record available.
Inventors
- 👤 William B Mccormack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:05
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS OF PREPARING A PHOSPHORUSCONTAINING POLYMERIC ADDITION PRODUCT WHICH COMPRISES CONTACTING A POLYMERIZABLE ORGANIC COMPOUND CONTAINING CONJUGATED OLEFINIC DOUBLE BONDS WITH A MONO-SUBSTITUTED DIHALOPHOSPHINE HAVING THE FORMULA RPX2 IN WHICH R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF ALKYL, ARYL AND ARALKYL RADICALS AND X REPRESENTS A MEMBER OF THE GROUP CONSISTING OF FREE RADICAL POLYMERIZATION IN THE PRESENCE OF A FREE RADICAL POLYMERIZATION CATALYST AND IN THE ABSENCE OF SUBSTANTIAL AMOUNTS OF HYDROXYL-CONTAINING COMPOUNDS.
Claim 2
Dependent Claim
77 words
THE PROCESS OF PREPARING A PHOSPHORUSCONTAINING POLYMERIC ADDITION PRODUCT WHICH COMPRISES CONTACTING A POLYMERIZABLE ORGANIC COMPOUND CONTAINING CONJUGATED OLEFINIC DOUBLE BONDS WITH A MONO-SUBSTITUTED DIHALOPHOSPHINE HAVING THE FORMULA RPX2 IN WHICH R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF ALKYL, ARYL AND ARALKYL RADICALS AND X REPRESENTS A MEMBER OF THE GROUP CONSISTING OF FREE RADICAL POLYMERIZATION IN THE PRESENCE OF A FREE RADICAL POLYMERIZATION CATALYST AND IN THE ABSENCE OF SUBSTANTIAL AMOUNTS OF HYDROXYL-CONTAINING COMPOUNDS.
References Cited (Backward Citations)
US2382812A
Cited
US2520601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |