Expired Canadian patentCanada
Process for preparation of fluoromethyl-substituted piperidine carbodithioates
CA 2038434 C · Owner: Rohm And Haas Company · Inventors: Pulwer, Mitchell Joel; Baysdon, Sherrol Lee; Janoski, Helen Lea
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described herein is a process for preparation of substituted piperidine dicarbothioate compounds.
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 18, 1991 and granted September 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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 18, 1991
GrantedSeptember 30, 1997
Term endedMarch 18, 2011
Patent numberCA 2038434 C
Classification (IPC)C07D213/83 +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.