Nitroarylalkylsulfone derivatives as gametocides
CA 1189536 A · Owner: Novartis Pharmaceuticals Canada Inc./Novartis Pharma Canada Inc. · Inventors: Fankhauser, Ernst; Sturm, Elmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New compounds have the formula: wherein R1 is C1-C6 alkyl, R2 and R3, each independently of the other are hydrogen, C1-C6 alkyl, C1-C6 alkoxy C1-C6 haloalkyl, halogen, cyano, nitro or amino or both together in the ortho-, position to each other as a -(CH=CH)2- group complete a, naphthalene ring, and R4 is a hydrazinium or ammonium ion. The new compounds are useful as active components in gametocidal compositions.
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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 June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.