Expired Canadian patentCanada
Tritium-labelled compound, its means of preparation and its application, in particular in determining the affinity of retinoids for their cell receptors
CA 1293733 C · Owner: Shroot, Braham · Inventors: Watts, Olivier; Cavey, Marie Therese; Shroot, Braham
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
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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
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 1987
GrantedDecember 31, 1991
Term endedDecember 31, 2008
Patent numberCA 1293733 C
Classification (IPC)C07D333/68 +1 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.