Expired Canadian patentCanada
Trilobal filaments exhibiting high bulk and sparkle
CA 1208899 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Werny, Frank; Bankar, Vilas G.; Stuchlik, Terry L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Trilobal synthetic carpet filaments in a specified range of modification ratios and related arm angles exhibit a unique combination of high bulk and high sparkle.
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 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 12, 1983
GrantedAugust 5, 1986
Term endedAugust 5, 2003
Patent numberCA 1208899 A
Classification (IPC)D02G3/00 +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.