Expired Canadian patentCanada
Oligomer derived from a polyethoxylated fatty amine, process for its fabrication and its application to modify superficial properties of polymers
CA 1306754 C · Owner: Atochem · Inventors: Collette, Christian; Augustin, Daniel; Parsy, Roland
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 August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 18, 1989
GrantedAugust 25, 1992
Term endedAugust 25, 2009
Patent numberCA 1306754 C
Classification (IPC)C07C271/22 +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.