Patent US2510112A successfully refreshed from Google Patents.
US2510112A
Expired / Lapsed
US
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Polymer compositions
Assignee: EIDP Inc
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Filing: 1948-07-08
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Granted: 1950-06-06
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Expires: 1968-07-08
Abstract
No abstract record available.
Inventors
- 👤 George E Holbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:41
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
THE PROCESS WHICH COMPRISES MIXING AN AQUEOUS DISPERSION OF COLLOIDAL POLYMERIZED TETRAFLUROETHYLENE, CONTAINING FROM ABOUT 25% TO ABOUT 75% BY WEIGHT OF THE POLYMER, WITH A SUBSTANTIALLY COMPLETELY FLUORINATED HYDROCARBON OIL, DISTILLING AT TEMPERATURES IN THE RANGE OF FROM ABOUT 50*C. TO ABOUT 300*C. AT 10 MM. HG PRESSURE, EMPLOYING FROM ABOUT 0.25 TO ABOUT 9 PARTS BY WEIGHT OF FLUORINATED OIL TO EACH PART TO POLYMER, COAGULATING THE AQUOUS DISPERSION WHILE STIRRING THE MIXTURE, THEN SETTLING THE MIXTURE, AND SEPARATING THE SUSPENSION OF COLLOIDAL POLYMER IN FLUORINATED OIL FROM THE AQUEOUS PHASE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |