US2907742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of perfluorochloroolefin polymers
Assignee: Hoechst AG
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Filing: 1956-03-12
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Granted: 1959-10-06
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Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 Frey Hans-Helmut
- 👤 Huth Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/08; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A NOVEL PLASTIC COMPOSITION COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF PERFLUOROCHLOROETHYLENE AND A COPOLYMER OF MORE THAN 20 MOL PERCENT PERFLLUOROCHLOROETHYLENE AND ANOTHER MONOOLEFIN CONTAINING FLUORINE AND HAVING NOT MORE THAN 3 CARBON ATOMS PER MOLECULE AND BETWEEN ABOUT 0.01 AND ABOUT 5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF POLYMER OF A THERMAL STABILIZER SELECTED FROM THE UNSUBSTITUTED MEMBERS OF THE GROUP CONSISTING OF THE QUINONES AND THE POLYHYDRIC PHENOLS, PREPARED BY ADMIXING SAID THERMAL STABILIZER WITH SAID POLYMER IN DRY POWDER FORM.
Claim 2
Dependent Claim
91 words
A NOVEL PLASTIC COMPOSITION COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF PERFLUOROCHLOROETHYLENE AND A COPOLYMER OF MORE THAN 20 MOL PERCENT PERFLLUOROCHLOROETHYLENE AND ANOTHER MONOOLEFIN CONTAINING FLUORINE AND HAVING NOT MORE THAN 3 CARBON ATOMS PER MOLECULE AND BETWEEN ABOUT 0.01 AND ABOUT 5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF POLYMER OF A THERMAL STABILIZER SELECTED FROM THE UNSUBSTITUTED MEMBERS OF THE GROUP CONSISTING OF THE QUINONES AND THE POLYHYDRIC PHENOLS, PREPARED BY ADMIXING SAID THERMAL STABILIZER WITH SAID POLYMER IN DRY POWDER FORM.
References Cited (Backward Citations)
US2662867A
Cited
US2643988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |