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Expired Canadian patentCanada

Method of modulating the immune response in mammals

CA 1215990 A · Owner: American Cyanamid Company · Inventors: Fields, Thomas L.; Lang, Stanley A. Jr.; Lin, Yang-I

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Abstract From the Canadian patent

A method of modulating the immune response system in a warm-blooded animal by the administration of N-substituted--phenylthioanilines, N-substituted-phenylsulfinylanilines, and N-substituted-phenylsulfonylanilines certain of which are new compounds.

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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 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 2003.
  • 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 5, 1983
GrantedDecember 30, 1986
Term endedDecember 30, 2003
Patent numberCA 1215990 A
Classification (IPC)C07D257/04 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedAug 5, 1983Patent grantedDec 30, 1986Term endedDec 30, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.