Canadian application, no grantCanada
Antitumor compositions and methods of treatment
CA 2047138 A1 · Owner: Crowell, Thomas Alan · Inventors: Ward, John Stanley; Crowell, Thomas Alan; Howbert, James Jeffrey
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, This invention provides certain sulfonamide compounds, formulations, and a method for treating susceptible neoplasms in mammals using certain sulfonamide 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 July 16, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 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.
FiledJuly 16, 1991
GrantedNo grant recorded
Term endedJuly 16, 2011
Patent numberCA 2047138 A1
Classification (IPC)C07C311/54 +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.