Expired Canadian patentCanada
High strength cord
CA 2075041 C · Owner: Kim, Dong Kwang · Inventors: Kim, Dong Kwang; Helfer, Farrel Bruce; Shemenski, Robert Martin
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Steel reinforcing cords (36) having filaments (38,40,42 & 44) with a tensile strength of at least 33$0 N/mm2 for reinforcing elastomeric articles such as tires.
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
- Filed March 11, 1991 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 11, 1991
GrantedApril 17, 2001
Term endedMarch 11, 2011
Patent numberCA 2075041 C
Classification (IPC)D02G3/38 +2 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.