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Expired Canadian patentCanada

Isothiuronium salts

CA 1301770 C · Owner: Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt. · Inventors: Guczoghy, Lajos; Vertesi, Csaba; Molnar, Attila

CIPO record

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Abstract From the Canadian patent

A b s t r a c t, According to the present invention there are provided isothiuronium salts of the general Formula I /I/, /wherein, R1 is C1-6 alkyl, C2-6 alkenyl C2-6 alkynyl, C3-6, cycloalkyl, aralkyl or aryl the said groups being, optionally substituted by one or more hydroxy mercapto and/or halogen;, R2 stands for hydrogen C1-6 alkyl, C2-6 alkenyl, C2-6, alkynyl or C3-6 cycloalkyl; X represents an organic or inorganic anion/. The compounds and salts of the present invention can be prepared by reacting a compound of the general Formula II, /II/, with an agent capable of introducing a R1 group. The compounds of the general Formula I exhibit antitumor and immunostimulant effect and are …

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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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 2, 1985
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301770 C
Classification (IPC)C07C335/38 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedApril 2, 1985Patent grantedMay 26, 1992Term endedMay 26, 2009

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