Patent US3091807A successfully refreshed from Google Patents.
US3091807A
Expired / Lapsed
US
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Biaxial orientation method and apparatus
Assignee: Union Carbide Corp
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Filing: 1960-10-06
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Granted: 1963-06-04
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Expires: 1980-10-06
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Turner
- 👤 Peter H Hofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:09
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/001; B29C48/0018; B29C48/0019; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
IN A METHOD FOR BIAXIALLY ORIENTING THERMOPLASTIC FILM COMPRISING EXTRUDING THERMOPLASTIC TUBING AND DRAWING THE EXPANDING THE TUBING IN THE MACHINE AND TRANSVERSE DIRECTION, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE EXTRUDED THERMOPLASTIC TUBING ESSENTIALLY UNEXPANDED FOR A DISTANCE FROM THE DIE ORIFICE AND SIMULTANEOUSLY SUBJECTING THE TUBING TO A COOLING ENVIRONMENT AND PERIPHERALLY CONTACTING AND FRICTONALLY HEATING THE
Claim 2
Dependent Claim
58 words
IN A METHOD FOR BIAXIALLY ORIENTING THERMOPLASTIC FILM COMPRISING EXTRUDING THERMOPLASTIC TUBING AND DRAWING THE EXPANDING THE TUBING IN THE MACHINE AND TRANSVERSE DIRECTION, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE EXTRUDED THERMOPLASTIC TUBING ESSENTIALLY UNEXPANDED FOR A DISTANCE FROM THE DIE ORIFICE AND SIMULTANEOUSLY SUBJECTING THE TUBING TO A COOLING ENVIRONMENT AND PERIPHERALLY CONTACTING AND FRICTONALLY HEATING THE
References Cited (Backward Citations)
US2423260A
Cited
US2952874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |