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Method of producing 1,2-dihydro-1,4-benzodiazepines-2-ones

US 3,513,159 A · Inventors: DYRSTING HJARNE PAUL CORRELL

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Why it's free to use

  • Granted May 19, 1970. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by May 19, 1987.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
Filed—
GrantedMay 19, 1970
Term endedMay 19, 1987
Application number—
Classification (CPC)C07D243/24
Length2 pages

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Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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