Patent US3566451A successfully refreshed from Google Patents.
US3566451A
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Process for widening and loosening continuous artificial fiber
Assignee: Deutsche Rhodiaceta AG
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Filing: 1968-10-30
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Granted: 1971-03-02
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Expires: 1988-10-30
Abstract
Abstract CONTINUOUS ARTIFICIAL FIBER STRANDS ARE WIDENED AND LOOSENED BY MEANS OF A SINGLE OR MULTIPLE PASSES THROUGH AN APPARATUS HAVING A PLURALITY OF ROWS OF NOZZLES. GAS IS BLOWN THROUGH ONE ROW OF NOZZLES AWAY FROM THE CENTER. AND IS BLOWN THROUGH THE ADJACENT ROW OF NOZZLES TOWARD THE CENTER OF THE APLPARATUS.
Inventors
- 👤 Hans Weigand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:01
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/18; A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |