Company Information
Founded as an amino acid extract manufacturer
1939 - 1980
- 1981 - 2000
- 2001 -
| 1939 | Showa 14 | Yamamaru Seiyaku Co., Ltd. established (Reagent manufacturing and sales company) (4-17-7, Toshima, Oji-ku, Tokyo City) |
| 1944 | Showa 19 | Trade name changed to Nippon Rika Co., Ltd. and the head office relocated at Nihonbashi-ku (4-13-1, Honcho, Nihonbashi-ku, Tokyo City) |
| 1950 | Showa 25 | Successfully isolated and extracted amino acids from natural proteins |
| 1953 | Showa 28 | Tokyo Plant (Adachi Plant) opened and mass production of amino acids began |
| 1960 | Showa 35 | Obtained patent for electrolytic production of L-cysteine |
| 1962 | Showa 37 | Ashikaga Plant opened and began operation  |
| 1964 | Showa 39年 | Oji Plant sold |
| 1972 | Showa 47 | With the revision of the Pharmaceutical Affairs Law, L-cysteine is approved as a permanent wave solvent |
| 1975 | Showa 50 | Development Laboratory opened (within the Tokyo Plant) |
| 1977 | Showa 52 | Received certification under the Reagent Certification System from the Ministry of International Trade and Industry (now the Ministry of Economy, Trade and Industry) |
| 1978 | Showa 53 | Production Technology Laboratory opened (within the Ashikaga Plant) |