Polyamide filament and process for producing the same
CA 2003022 C · Owner: Mitsubishi Chemical Corporation · Inventors: Maruyama, Seiichiro; Tsunoda, Masami
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are a polyamide filament comprising a polyamide resin composition which comprises an aromatic polyamide resin (A) produced by polymerizing a monomer containing not less than 85 wt% of an aromatic polyamide component composed of terephthalic acid, isophthalic acid and aliphatic diamine, and an aliphatic polyamide resin (B) and, having a heat-shrinkage in boiling water of not less than 20%, and a process for producing the same.
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 November 15, 1989 and granted March 19, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2011.
- 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.