Expired Canadian patentCanada
Staple fibers and process for making them
CA 2017837 C · Owner: Rodini, David Joseph · Inventors: Rodini, David Joseph
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Staple fibers having a crimp frequency in the range of 3 to 6 crimps per centimeter are made by a process including a co-crimping step in which conductive and nonconductive filaments are crimped together.
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 May 30, 1990 and granted February 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 30, 1990
GrantedFebruary 27, 2001
Term endedMay 30, 2010
Patent numberCA 2017837 C
Classification (IPC)D01G1/04 +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.