Talk:Franjo Kajfež

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Franjo Kayfež is not an inventor of valium

Franjo Kayfež is not an inventor of apaurin or valium. Even Leo Henryk Sternbach in 1955 synthesized chlordiazepoxide (Librium), working for Hoffmann-La Roche. Earl Reeder and Leo Henryk Sternbach from the Hoffman La Roche factory patentpatent US3371085 A and before Leo Henryk Sternbach patented US2893992.Apaurin is the only factory name for diazepam or benzodiazepine. At the time of Yugoslavia - in the Federal Patent Office, the company F.Hoffmann-La Roche & Co., and Aktiengesellschaft from Basel, Switzerland, patented the Benzodiazepine derivative preparation process, where the right of priority was reserved on December 27, 1963, from the United States with application P 1844 / 1964 of December 23, 1964, and patent YU 26585 is valid from March 31, 1967 --Dmitar Zvonimir (talk) 13:19, 31 August 2017 (UTC)[reply]