Expired Canadian patentCanada
Thermally stable forms of electrically conductive polyaniline
CA 2011189 C · Owner: Zipperling Kessler & Co.(Gmbh & Co.) · Inventors: Elsenbaumer, Ronald L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to compositions of thermally stable electrically conductive substituted and unsubstituted polyanilines and to conductive articles formed from such compositions.
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 28, 1990 and granted October 24, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 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.
FiledFebruary 28, 1990
GrantedOctober 24, 2000
Term endedFebruary 28, 2010
Patent numberCA 2011189 C
Classification (IPC)C08L79/02 +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.