US3227784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing molecularly oriented structures by extrusion of a polymer solution
Assignee: EIDP Inc
•
Filing: 1964-02-10
•
Granted: 1966-01-04
•
Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Blades Herbert
- 👤 White James Rushton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:51
CPC Classifications
C; C08; C08L; C08L77/00; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; B29C44/507; B29C67/00; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/141; C08J9/143; C08L67/00; C08L67/02; D; D01; D01D; D01D5/00; D01D5/11; D01D5/24; D01D5/247; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S264/47; Y10S521/00; Y10S521/908; Y10S521/91; Y10T; Y10T152/00; Y10T152/10; Y10T152/10279; Y10T152/10378; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN EXTRUSION PROCESS COMPRISING PREPARING A SOLUTION OF A SYNTHETIC CRYSTALLINE ORGANIC POLYMER IN AN ACTIVATING LIQUID, SAID ACTIVATING LIQUID HAVING A BOILING POINT AT LELAST 25*C. BELOW THE MELTING POINT OF THE POLYMER AND BEING A SOLVENT FOR THE POLYMER AT THE EXTRUSION CONDITIONS WHILE DISSOLVING LESS THAN 1% OF THE POLYMER AT TEMPERPATURES UP TO THE NORMALL SOLVENT BOILING POINT, SAID SOLUTION HAVING A TEMPERATURE PRIOR TO EXTRUSION GREATER THAN THE FREEZING POINT OF THE SOLUTION AND BELOW THAT TEMPERATURE WHERE ADIABATIC EVAPORATION OF ALL THE ACTIVATING LIQUID PRESENT WILL PRODUCE INSUFFICIENT COOLING
Claim 2
Dependent Claim
95 words
AN EXTRUSION PROCESS COMPRISING PREPARING A SOLUTION OF A SYNTHETIC CRYSTALLINE ORGANIC POLYMER IN AN ACTIVATING LIQUID, SAID ACTIVATING LIQUID HAVING A BOILING POINT AT LELAST 25*C. BELOW THE MELTING POINT OF THE POLYMER AND BEING A SOLVENT FOR THE POLYMER AT THE EXTRUSION CONDITIONS WHILE DISSOLVING LESS THAN 1% OF THE POLYMER AT TEMPERPATURES UP TO THE NORMALL SOLVENT BOILING POINT, SAID SOLUTION HAVING A TEMPERATURE PRIOR TO EXTRUSION GREATER THAN THE FREEZING POINT OF THE SOLUTION AND BELOW THAT TEMPERATURE WHERE ADIABATIC EVAPORATION OF ALL THE ACTIVATING LIQUID PRESENT WILL PRODUCE INSUFFICIENT COOLING
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |