Electrically conductive polymer composition
CA 2081629 C · Owner: Dai-Ichi Kogyo Seiyaku Co. Ltd. · Inventors: Kono, Michiyuki; Mori, Shigeo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The electrically conductive polymer composition of this invention comprises (A) a polyaniline (B) at, least one member selected from the class consisting of homopolymers, block copolymers and random copolymers of alkylene oxide monomers and crosslinking products thereof, and (C) at least one member selected from the class consisting of protonic acid anions electron, acceptors, alkali metal salts and alkaline earth metal salts. This composition affords a choice of electronic conductance or ionic conductance, or both according to, the intended application. Furthermore since it is, highly processable and flexible the composition finds, application in a variety of uses.
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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 October 28, 1992 and granted August 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.