Canadian application, no grantCanada
Stable solutions of polyaniline and shaped articles therefrom
CA 2037649 A1 · Owner: Tietz, Raymond F. · Inventors: Tietz, Raymond F.; Cohen, Jeffrey D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Stable Solutions of Polyaniline and Shaped Articles Therefrom, ABSTRACT OF THE DISCLOSURE Polyaniline fibers are spun from stable solutions of the polymer in certain amine solvents.
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 March 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 6, 1991
GrantedNo grant recorded
Term endedMarch 6, 2011
Patent numberCA 2037649 A1
Classification (IPC)C08G73/06 +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.