Patent US3714686A successfully refreshed from Google Patents.
US3714686A
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Process and apparatus for texturing filaments
Assignee: BASF SE
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Filing: 1971-02-08
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Granted: 1973-02-06
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Expires: 1991-02-08
Abstract
Abstract PROCESS AND APPARATUS FOR TEXTURING FILAMENTS BY SUBJECTING THE FILAMENTS TO A FLOWING HEATED GASEOUS MEDIUM. THE FILAMENTS ARE EXPOSED TO A TURBULENTLY FLOWING MEDIUM IN TWO ZONES, AN EXCHANGE BETWEEN THE MEDIUM AND THE AMBIENT AIR TAKING PLACE IN THE SECOND ZONE. BY MEANS OF THIS PROCESS AND APPARATUS FILAMENTS MADE OF SYNTHETIC LINEAR MATERIALS OF HIGH MOLECULAR WEIGHT MAY BE TEXTURED AT HIGH FILAMENT SPEEDS.
Inventors
- 👤 D Herion
- 👤 W Martin
- 👤 W Bauer
- 👤 H Schmid
- 👤 H Feldhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:19
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/12; D02G1/122
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |