Patent US3047553A successfully refreshed from Google Patents.
US3047553A
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Polymerization process using polyfluoroazoalkanes as initiators
Assignee: EIDP Inc
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Filing: 1959-11-30
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Granted: 1962-07-31
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Coffman Donald Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:02
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD OF POLYMERIZING EHTYLENICALLY UNSATURATED COMPOUNDS WHICH COMPRISES SUBJECTING SAID COMPOUNDS TO POLYMERIZATION CONDITIONS UNDER THE INFLUENCE OF HEAT AND IN THE PRESENCE OF A POLYFLUOROAZALKANE OF THE FORMULA R-CF2-N=N-CF2-R WHERE R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF FLUORIDE, A PERFLUOROCARBON RADICAL AND OMEGA-HYDROPERFLUOROCARBON RADICAL, THE AMOUNT OF POLYFLUOROAZOALKANE BEING BETWEEN 0.0001 AND 0.05 MOLE PER MOLE OR TOTAL POLYMERIZABLE MATERIAL.
Claim 2
Independent Claim
64 words
A METHOD OF POLYMERIZING EHTYLENICALLY UNSATURATED COMPOUNDS WHICH COMPRISES SUBJECTING SAID COMPOUNDS TO POLYMERIZATION CONDITIONS UNDER THE INFLUENCE OF HEAT AND IN THE PRESENCE OF A POLYFLUOROAZALKANE OF THE FORMULA R-CF2-N=N-CF2-R WHERE R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF FLUORIDE, A PERFLUOROCARBON RADICAL AND OMEGA-HYDROPERFLUOROCARBON RADICAL, THE AMOUNT OF POLYFLUOROAZOALKANE BEING BETWEEN 0.0001 AND 0.05 MOLE PER MOLE OR TOTAL POLYMERIZABLE MATERIAL.
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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |