Canadian application, no grantCanada
Ion exchange polymer dispersion and process for its production
CA 2388883 A1 · Owner: Asahi Glass Company, Limited · Inventors: Ishisaki, Toyoaki (Deceased); Mukoyama, Atsushi
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ion exchange polymer dispersion having an ion exchange polymer having sulfonic acid groups and a fibrilliform fluorocarbon polymer dispersed in a dispersion medium.
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, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2024.
- 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, 2002
GrantedNo grant recorded
Term endedMay 30, 2022
Patent numberCA 2388883 A1
Classification (IPC)B01J47/00 +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.