1973
- Mar.
- Incorporated as a joint venture of Medi-Physics Inc.USA. Sumitomo Chemical Co.Ltd. and Sumitomo Corporation
1974
- May.
- Construction of Takarazuka Facility completed
- Dec.
- The first cyclotron installed
1975
- Mar.
- Shares formerly owned by Medi-Physics Inc. taken over by Nippon Roche K.K.
1980
- Apr.
- The first New Town Conference (symposium on cardiovascular nuclear medicine) held
1983
- Oct.
- Construction of Chiba Facility completed
1987
- Jul.
- Business diversified into in vitro diagnostics field
1990
- Jul.
- Construction of Hyogo Facility completed
- Aug.
- Headquarters moved from Takarazuka to Nishinomiya
1991
- Oct.
- Construction of Central Research Laboratory (currently Research Centre) completed
1994
- Mar.
- Termination of shareholding by Nippon Roche K.K.
- Dec.
- Capital participation by Amersham International plc U.K.
1996
- Sep.
- Healthcare businesses of Amersham K.K. integrated into Nihon Medi-Physics
- Oct.
- Sumitomo Corporation ceased to be a shareholder and fifty-fifty shareholding between Sumitomo Chemical and Amersham International established
2000
- Mar.
- NMP Business Support Co. Ltd. a wholly owned subsidiary established
2001
- Jun.
- Hyogo Facility qualified for "ISO 14001"
- Sep.
- Chiba Facility qualified for "ISO 14001"
2004
- Jan.
- Construction of Sapporo Laboratory completed
- Feb.
- Construction of Aichi and Kyoto Laboratories completed
- Apr.
- Shares formerly owned by Amersham taken over by GE Healthcare as a result of Amersham acquired by General Electric Company
- Nuclear Medicine Imaging R&D Centre opened
- Jun.
- Construction of Fukuoka and Tokyo Laboratories and Tokyo Head Office (currently Head Office) completed
- Jul.
- Construction of Okayama Laboratory completed
- Sep.
- Construction of Kanagawa Laboratory completed
- Oct.
- Construciton of Kobe Laboratory completed
2005
- Jul.
- Approval for the FDGscan injectable obtained
- Aug.
- Enter into the PET diagnostics business
- Distribution of FDGscan injectable commenced
2007
- Feb.
- Customer Service Group of Sales Promotion Dept. (currently Order Reception & Logistics Center) qualified for "ISO 9001"
- Construction of Tohoku Laboratory completed
2008
- Feb.
- Headquarters moved from Nishinomiya to Tokyo
2010
- Jan.
- Kansai Office opened
2012
- Oct.
- Construction of Cyclotron Bldg. at Chiba Facility completed
2014
- Aug.
- Construction of Kitakanto Laboratory completed
2018
- Mar.
- Construction of Hokuriku Laboratory completed
2019
- Sep.
- CRADLE Facility (Theranostics Manufacturing Technology Center) completed