Patent US3655839A successfully refreshed from Google Patents.
US3655839A
Expired / Lapsed
US
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Manufacture of drawn thermoplastic fibrillary products
Assignee: Akzona Inc
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Filing: 1969-10-02
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Granted: 1972-04-11
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Expires: 1989-10-02
Abstract
Abstract A PROCESS FOR DRAWING A THERMOPLASTIC FIBRILLARY PRODUCT WHICH PROMISES THE STEPS OF FEED ING THE FIBRILLARY PRODUCT TO A DRAWING ZONE; DRAWING THE PRODUCT IN THE DRAWING ZONE, THERE BEING A MAXIMUM CHANGE IN THE DENIER OF THE PRODUCT AT THE DRAWING POINT IN THE DRAWING ZONE; PASSING THE FIBRILLARY PRODUCTG IN SLIPPING CONTACT OVER AT LEAST ONE FRICTION MEMBER AFTER THE DRAWING POINT AND IN THE DRAWING ZONE; AND THEREAFTER DISCHARGING THE PRODUCT FROM THE DRAWING ZONE. ALSO APPARATUS FOR CARRYING OUT THE PROCESS AND THE DRAWN PRODUCT ARE DISCLOSED.
Inventors
- 👤 Hendrinus Sempel
- 👤 Hendrik Potman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/228; Y; Y10; Y10S; Y10S264/00; Y10S264/56; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913
Claims Analysis
Total Claims: 0
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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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |