Process for the production of high shrinkage wet-spun acrylic fibres or filaments
CA 1077663 A · Owner: Bayer Aktiengesellschaft · Inventors: Herbertz, Toni; Reinehr, Ulrich; Nogaj, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the production of highshrinkage wet-spun acrylic fibres or filaments having good strength and high densities by fixing the unstretched filaments with saturated steam and then stretching in a ratio of from 1 : 3,5 to 1 : 5.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 20, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.