Expired Canadian patentCanada
Process for the production of polyamide-6 filament yarns
CA 1056570 A · Owner: Bayer Aktiengesellschaft · Inventors: Giessler, Wolfgang; Kubitzek, Harry; Hinrichsen, Georg
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure The invention relates to a process for the continuous production of a stretched and interlaced polyamide-6 filament yarn wherein the filaments are interlaced before stretching.
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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 June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 19, 1979
Term endedJune 19, 1996
Patent numberCA 1056570 A
Classification (IPC)D01F6/60 +1 more
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.