Canadian application, no grantCanada
Compound for use in the synthesis of semiconducting polymers with perpendicularly arranged cores and method of synthesizing said compound
CA 2038039 A1 · Owner: Tour, James M. · Inventors: Tour, James M.; Wu, Ruilian; Schumm, Jeffrey S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The stereochemical structure necessary for preparation of perpendicularly arranged cores is provided by a compound of the formula, This compound can be synthesized by the reaction of with bromine in the presence of FeCl3. -12-
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 12, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 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 12, 1991
GrantedNo grant recorded
Term endedMarch 12, 2011
Patent numberCA 2038039 A1
Classification (IPC)C07C25/22 +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.