- CEO
- Kiminori Kato
- Full Time Employees
- 1,003
- Sector
- Health technology
- Industry
- Medical specialties
- Address
- 3-20-41 Higashimotomachi Tokyo TY Japan 185-8533
- IPO Date
- May 15, 2000
- Business
- Rion Co., Ltd. develops, manufactures, sells, and services medical devices including hearing instruments and related medical equipment; environmental devices such as sound and vibration measuring instruments and particle counters; and parts and equipment related to these products primarily in Japan. The company's audiological equipment encompasses analog and digital behind-the-ear hearing instruments, trimmer digital behind-the-ear models, in-the-ear ready and custom-made hearing aids, analog body aids, and waterproof hearing instruments; medical equipment includes audiometers and otoacoustic emission screeners under the Rionet brand with over 60 years of history. Sound and vibration measuring instruments comprise sound level meters, vibration meters, seismometers, frequency analyzers, microphones, accelerometers, and recorders; particle counters include airborne, liquid-borne, and viable models used in clean room management for electronics, semiconductors, pharmaceuticals, food manufacturing, and environmental administration. Founded June 21, 1944, and headquartered at 3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan, Rion lists on the Tokyo Stock Exchange Prime Market under ticker 6823 with President and CEO Koki Kato and 1,026 consolidated employees as of March 31, 2024. Recent developments include the renewal of the SupportRoom web service for sound and vibration measuring instruments in July 2024; release of RION Technical Journal volumes 10 through 13 from May 2024 to June 2025; issuance of new shares as restricted stock compensation in July 2025; and consolidated financial results announcements for periods ending June 30, 2025, and March 31, 2025, reflecting ongoing operational enhancements.