Expired Canadian patentCanada
Use of aminoxides as antistatic agents
CA 2032184 C · Owner: Connotte, Hendrik J. J. · Inventors: Connotte, Hendrik J. J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous antistatic composition comprising 10 - 80 % by weight of an aminoxide and 2.5 - 20 % by weight of a lower alkanol axe effective antistatic agents and cause less damage on polyester fabrics than conventional antistatic agents.
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 December 13, 1990 and granted November 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 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.
FiledDecember 13, 1990
GrantedNovember 30, 1999
Term endedDecember 13, 2010
Patent numberCA 2032184 C
Classification (IPC)D06M13/10 +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.