US2783219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of fluorine containing polymers
Assignee: MW Kellogg Co
•
Filing: 1953-06-11
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Granted: 1957-02-26
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Expires: 1973-06-11
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Passino
- 👤 Albert L Dittman
- 👤 John M Wrightson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:14
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/24; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR THE PRODUCTION OF A THERMOPLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE WHICH COMPRISES POLYMERIZING TRIFLUOROCHLORORTHYLENE IN POLYMERIZATION ZONE AT A TEMPERATURE ABOVE ABOUT 0*C. AND BELOW 20*C. IN THE PRESENCE OF AN AQUEOUS-SUSPENSION MEDIUM CONTAINING AN ALKALI PERSULFATE AS A PROMOTER AND AN ALKALI BI-
Claim 2
Dependent Claim
45 words
A PROCESS FOR THE PRODUCTION OF A THERMOPLASTIC POLYMER OF TRIFLUOROCHLOROETHYLENE WHICH COMPRISES POLYMERIZING TRIFLUOROCHLORORTHYLENE IN POLYMERIZATION ZONE AT A TEMPERATURE ABOVE ABOUT 0*C. AND BELOW 20*C. IN THE PRESENCE OF AN AQUEOUS-SUSPENSION MEDIUM CONTAINING AN ALKALI PERSULFATE AS A PROMOTER AND AN ALKALI BI-
References Cited (Backward Citations)
US2569524A
Cited
US2613202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |