Group Company
OYO Group Head Office
Chiyoda-ku, Tokyo, Japan
- Geo-engineering and consultation services
- Measuring Instruments Business
OYO Group Domestic Subsidiaries
Bunkyo-ku, Tokyo, Japan
- Sale of software & hardware products for geological & environmental investigation
- Temporary personnel agency
- Nonlife insurance agency
Sendai, Miyagi, Japan
- Geological investigation
- Landslip prevention and well drilling
Minato-ku, Tokyo, Japan
- Environmental surveys and environmental assessment
Tsukuba-shi, Ibaraki, Japan
- Marine surveying and investigation
Bunkyo-ku, Tokyo, Japan
- Civil engineering services related design
- Surveying and investigation and project management
Saitama-shi, Saitama, Japan
- Sale of seismometers and seismological instrumentation services
Kawaguchi-shi, Saitama, Japan
- Geo-monitoring service and instruments rental
Kagoshima-shi, Kagoshima, Japan
- Geological investigation and geophysical services
Minato-ku, Tokyo, Japan
- Damage risk evaluation and risk management for earthquake and typhoon disasters
Bunkyo-ku, Tokyo, Japan
- Road planning
- Transportation analysis
- Regional planning
- Environmental evaluation
- Ecosystem survey
OYO Group Overseas Subsidiaries
OYO Corporation U.S.A.
Pasadena, California, U.S.A
- Holding company of US & UK operating subsidiaries
Pasadena, California, U.S.A
- Manufacturing and sale of seismometers, strong motion seismometers, and seismic observation systems
San Jose, California, U.S.A.
- Manufacturing and sale of geophysical instruments
Nashua, New Hampshire, U.S.A.
- Manufacturing and sale of ground penetrating radar systems
Tumon, Guam, U.S.A.
- Geotechnical Investigation/Reporting/Consulting Services
Deganwy, Conwy, U.K.
- Manufacturing and sale of slim hole logging systems
Affiliates
Chuo-ku, Tokyo, Japan
- Natural disaster engineering
- Risk analyzing service
- Environmental site assessment
Overseas Affiliates
Orleans, France
- Manufacturing and sale of geophysical instruments