Expired Canadian patentCanada
Sterilization-protecting agent and sterilization method
CA 2245744 C · Owner: Asahi Kasei Kuraray Medical Co. Ltd. · Inventors: Suemitsu, Junsuke; Onodera, Hirokazu
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A material comprising a sterilized material and a sterile protective agent which comprises a polysaccharide made up of three or more rnonosaccharide molecules and having a positive charge.
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 February 4, 1997 and granted March 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 4, 1997
GrantedMarch 12, 2002
Term endedFebruary 4, 2017
Patent numberCA 2245744 C
Classification (IPC)A01N43/16 +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.