Process for producing ferrocenoyl derivatives
CA 2031501 A1 · Owner: Yokoyama, Seiichiro · Inventors: Yokoyama, Seiichiro; Hiroi, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for producing a ferrocenoyl derivative comprising the reaction of ferrocene derivative with monocarboxylic acid or dicarboxylic acid in the presence of a catalyst. The ferrocenoyl derivative otained by said process is very useful as the intermediate product for various functional materials, among all, for the micelle forming agents (surfactants) in so-called Micellar Disruption Method or the intermediate product of it.
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 May 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 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.
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.