Apparatus and process for converting a continuous multifilament yarn to a staple-like yarn
CA 1306103 C · Owner: Basf Canada Inc. · Inventors: Bird, David Owen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to a process and product thereof and an apparatus, for converting a twisted continuous filament, multifilament yarn into a staple-like yarn. The process is carried out by needling the yarn with a barbed needle in order to break yarn filaments. The broken yarn filaments protrude from the yarn after the needling process. The protruding filament ends give the resulting yarn the appearance of a spun yarn.
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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.