US2953818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polyvinyl fluoride film from mixture of polyvinyl fluoride particles and latent solvent therefor
Assignee: EIDP Inc
•
Filing: 1958-02-14
•
Granted: 1960-09-27
•
Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Lester Ray Bartron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/07; B29C48/08; B29K; B29K2027/00; B29K2027/12; B29K2027/18; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PRODUCTION OF SHAPED STRUCTURES OF POLYVINYL FLUORIDE WHICH COMPRISES (1) HEATING A MIXTRUE COMPRISING ESSENTIALLY FROM 85% TO 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE MIXTURE, OF PARTICLES OF AN ORIENTABLE POLYVINYL FLUORIDE HAVING AN INHERENT VISCOSITY OF AT LEAST 1, AND FROM 15% TO 90% OF A LATENT SOLVENT FOR POLYVINYL FLUORIDE, TO AN ELEVATED TEMPERATURE EFFECTIVE TO COMPLETELY COALESCE SAID PARTICLES AND CONVERT SAID IXTURE INTO A FLUID COMPOSITION, (2) EXTRUDING SAID FLUID COMPOSITION TO FORM A SEFL-SUPPORTING SHAPED STRUC-
Claim 2
Dependent Claim
89 words
A PROCESS FOR THE PRODUCTION OF SHAPED STRUCTURES OF POLYVINYL FLUORIDE WHICH COMPRISES (1) HEATING A MIXTRUE COMPRISING ESSENTIALLY FROM 85% TO 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE MIXTURE, OF PARTICLES OF AN ORIENTABLE POLYVINYL FLUORIDE HAVING AN INHERENT VISCOSITY OF AT LEAST 1, AND FROM 15% TO 90% OF A LATENT SOLVENT FOR POLYVINYL FLUORIDE, TO AN ELEVATED TEMPERATURE EFFECTIVE TO COMPLETELY COALESCE SAID PARTICLES AND CONVERT SAID IXTURE INTO A FLUID COMPOSITION, (2) EXTRUDING SAID FLUID COMPOSITION TO FORM A SEFL-SUPPORTING SHAPED STRUC-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |