Substituted 8-phenylxanthines
CA 1286666 C · Owner: Wellcome Foundation Limited (The) · Inventors: Leighton, Harry Jefferson; Daluge, Susan Mary
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 certain novel 8-phenylxanthines substituted in the 3 or 4 position of the phenyl group by an alkenylene alkenyleneoxy, alkynylene or alkynyleneoxy bearing a terminal acidic grouping and to their use, in human and veterinary therapy particularly for conditions associated with the cell surface effects of adenosine.
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
- Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.
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.