Canadian application, no grantCanada
Process for preparing granular esters
CA 2099096 A1 · Owner: Akzo Nobel Nv · Inventors: Chou, Yueting; Martin, David Albert
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a process for preparing granular esters in one step by the reaction of an alcohol with acid chloride in an aqueous alkaline medium with moderate shear agitation and optionally in the presence of a surfactant.
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 June 23, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 23, 1993
GrantedNo grant recorded
Term endedJune 23, 2013
Patent numberCA 2099096 A1
Classification (IPC)C07C309/42 +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.