Patent US2952669A successfully refreshed from Google Patents.
US2952669A
Expired / Lapsed
US
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Polymerization of perfluorocarbon polymers
Assignee: EIDP Inc
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Filing: 1954-09-17
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Granted: 1960-09-13
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Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
- 👤 Bro Manville Isager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:04
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR POLYMERIZING MONOETHYLENICALLY UNSATURATED PERFLUROCARBON MONOMER WHICH COMPRISES INTRODUCING SAID MONOMER IN GASEOUS FORM INTO A PERFLUORINATED, SATURATED, LIQUID SOLVENT BOILING BELOW 150*C,. OF THE CLASS CONSISTING OF PERFLUORINATED HYDROCARBONS, PERFLUORINATED ETHERS AND PERFLUORINATED TERTIARY AMINES, HAVING THEREIN DISSOLVED A POLYMERIZATION CATALYST, POLYMERIZING SAID MONOMER IN SAID SOLVENT, REMOVING A POLYMER-SOLVENT SLURRY AND SEPARATING SAID SOLVENT AND POLYMER.
Claim 2
Dependent Claim
60 words
A PROCESS FOR POLYMERIZING MONOETHYLENICALLY UNSATURATED PERFLUROCARBON MONOMER WHICH COMPRISES INTRODUCING SAID MONOMER IN GASEOUS FORM INTO A PERFLUORINATED, SATURATED, LIQUID SOLVENT BOILING BELOW 150*C,. OF THE CLASS CONSISTING OF PERFLUORINATED HYDROCARBONS, PERFLUORINATED ETHERS AND PERFLUORINATED TERTIARY AMINES, HAVING THEREIN DISSOLVED A POLYMERIZATION CATALYST, POLYMERIZING SAID MONOMER IN SAID SOLVENT, REMOVING A POLYMER-SOLVENT SLURRY AND SEPARATING SAID SOLVENT AND POLYMER.
References Cited (Backward Citations)
US2700661A
Cited
US2600821A
Cited
US2600804A
Cited
US2662065A
Cited
US2705706A
Cited
US2700662A
Cited
US2748098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |