Started production of DDT.
Started manufacture of penicillin
From reconstruction to growth
1946
Obtained permission to lease the Iwahana plant and began production of black powder and fuses.
1948
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Lipophilic pyrimidine penicillin
1947
The headquarters moved to the Nippon Kayaku Bldg., 15-5, Ichiban-cho, Chiyodaku, Tokyo.
1956
Technical tie-up with Geigy AG, Switzerland and the production of diazinon, an insecticide, started.
Business expansion during the period of rapid economic growth