Expired Canadian patentCanada
High specific area material and use thereof for improving contact between phases or reactants implying physical and/or chemical and/or biological processes
CA 1256089 A · Owner: Institut National De Recherche Chimique Appliquee · Inventors: Meyer, Francois; Mavel, Gerard; Zhang, Chong-Hua
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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
- Granted June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 13, 1985
GrantedJune 20, 1989
Term endedJune 20, 2006
Patent numberCA 1256089 A
Classification (IPC)B01J19/30 +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.