US3577500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of polyamide fibres having high linear strength and knot strength
Assignee: Bayer AG
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Filing: 1969-05-22
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Granted: 1971-05-04
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Expires: 1989-05-22
Abstract
Abstract PROCESS FOR THE PRODUCTION OF POLYAMIDE FIBRES HAVING LINEAR STRENGTH AND KNOT STRENGTH BY STRETCHING POLYAMIDE MONOFILS AT TEMPERATURES OF 25 TO 35*C. BELOW THE TEMPERATURE LEVEL OF THE CRYSTALLITE MELTING MAXIMUM AT A RATIO OF 1:4.5 TO 1:6.5.
Inventors
- 👤 Armin Kohler
- 👤 Alfred Reichle
- 👤 Klaus Offermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:38
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D01F6/78; D01F6/80
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |