Expired Canadian patentCanada
Manufacture of polyamide yarns by high speed draw spinning
CA 1106563 A · Owner: Imperial Chemical Industries Limited · Inventors: Carr, Paul L.I.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Manufacture of polyamide yarns by a high speed draw spinning process in which the yarns are passed through defined fluid environments. Yarns are comparable in properties with conventional spin-lag-draw yarns.
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, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 17, 1978
GrantedAugust 11, 1981
Term endedAugust 11, 1998
Patent numberCA 1106563 A
Classification (IPC)D01D5/10 +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.