Fluorinated diazabicycloalkane derivatives
CA 2137037 C · Owner: Air Products And Chemicals, Inc. · Inventors: Banks, Ronald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel N,N'-difluorinated diazabicycloalkane derivatives which are useful as electrophilic fluorinating agents processes for preparing, such N,N'-difluorinated diazabicycloalkane derivatives and methods of using such compounds as fluorinating agents. The invention also presents novel N-fluorinated azaazoniabicycloalkane-Lewis acid adduct intermediates which are formed in the processes for preparing such N,N'-difluorinated diazabicycloalkane derivatives.
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 November 30, 1994 and granted October 21, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2016.
- 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.