Patent US2156826A successfully refreshed from Google Patents.
US2816082A
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Process of polymerizing a fluoroethylene in water containing a chlorendic acid compound
Assignee: EIDP Inc
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Filing: 1955-09-14
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Granted: 1957-12-10
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Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Brinker Keith Clark
- 👤 Ross Robert Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:43
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE POLYMERIZATION OF FLUOROETHYLENES IN AN AQUEOUS MEDIUM TO OBTAIN A COLLOIDAL DISPERSION OF POLYMER, THE STEP OF CARRYING OUT THE SAID POLYMERIZATION IN THE PRESENCE OF A WATER-SOLUBLE POLYMERIZATION INITIATOR AND A QUANTITY OF A COMPOUND OF THE CLASS CONSISTING OF 1,4,5,6,7,7- HEXACHLOROBICYCLO(2,2,1) -5- HEPTENE 2,3DICARBOXYLIC ACID AND ITS ACID SALTS NOT EXCEEDING 1% BY WEIGHT OF SAID AQUEOUS MEDIUM AS THE DISPERSING AGENT.
Claim 2
Dependent Claim
66 words
IN THE POLYMERIZATION OF FLUOROETHYLENES IN AN AQUEOUS MEDIUM TO OBTAIN A COLLOIDAL DISPERSION OF POLYMER, THE STEP OF CARRYING OUT THE SAID POLYMERIZATION IN THE PRESENCE OF A WATER-SOLUBLE POLYMERIZATION INITIATOR AND A QUANTITY OF A COMPOUND OF THE CLASS CONSISTING OF 1,4,5,6,7,7- HEXACHLOROBICYCLO(2,2,1) -5- HEPTENE 2,3DICARBOXYLIC ACID AND ITS ACID SALTS NOT EXCEEDING 1% BY WEIGHT OF SAID AQUEOUS MEDIUM AS THE DISPERSING AGENT.
References Cited (Backward Citations)
US2612484A
Cited
US2662065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |