EP0665223A1 — Antitumor agent, novel 3(2H)-pyridazinone derivatives and their preparation
Assigned to Takeda Pharmaceutical Co Ltd · Expires 1995-08-02 · 31y expired
What this patent protects
Anti-tomor agents comprising novel 3(2H)-pyridazinone derivatives or salts thereof and methods of producing the same are disclosed. Also disclosed is a method for treating or preventing tumors by administering to a mammal a therapeutically effective amount of 4,5-di substituted 3…
USPTO Abstract
Anti-tomor agents comprising novel 3(2H)-pyridazinone derivatives or salts thereof and methods of producing the same are disclosed. Also disclosed is a method for treating or preventing tumors by administering to a mammal a therapeutically effective amount of 4,5-di substituted 3(2H)-pyridazinones and salts thereof.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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