Nihon Kohden

Nihon Kohden Corporation

Native name	日本光電工業株式会社
Type	Public KK
Traded as	:
Industry	Medical equipment
Founded	Tokyo (August 7, 1951; 65 years ago (1951-08-07))
Founder	Yoshio Ogino
Headquarters	Nishiochiai, Shinjuku-ku, Tokyo 161-8560, Japan
Key people	Fumio Suzuki (Chairman and CEO) Hirokazu Ogino (President and COO)
Products	Physiological measuring equipment Diagnostic information systems
Revenue	JPY 160.8 billion (FY 2014) (US$ 1.35 billion) (FY 2014)
Net income	JPY 11.1 billion (FY 2014) (US$ 92.5 million) (FY 2014)
Number of employees	4,616 (as of March 31, 2015)
Website	Official website
Footnotes / references

JPY 160.8 billion (FY 2014)

JPY 11.1 billion (FY 2014)

Nihon Kohden Corporation (日本光電工業株式会社, Nihon Kōdenkōgyō Kabushiki-gaisha) is a Tokyo-based leading manufacturer, developer and distributor of medical electronic equipment, which include EEGs, EMG measuring systems, ECGs, patient monitors and clinical information systems, with subsidiaries in the U.S., Europe and Asia. The company's products are now used in more than 120 countries, and it is the largest supplier of EEG products worldwide.

In 1972, Takuo Aoyagi, a researcher at the company, invented and patented the basic principles of pulse oximetry. Two years later he developed the world's first pulse oximeter, which has helped improve patient safety during anaesthesia.