Nihon Kohden

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Nihon Kohden Corporation
Native name
Public KK
Traded asTYO: 6849
IndustryMedical equipment
FoundedTokyo (August 7, 1951; 68 years ago (1951-08-07))
FounderYoshio Ogino
HeadquartersNishiochiai, Shinjuku-ku, Tokyo 161-8560, Japan
Key people
Fumio Suzuki
(Chairman and CEO)
Hirokazu Ogino
(President and COO)
RevenueIncrease JPY 160.8 billion (FY 2014) (US$ 1.35 billion) (FY 2014)
Decrease JPY 11.1 billion (FY 2014) (US$ 92.5 million) (FY 2014)
Number of employees
4,616 (as of March 31, 2015)
WebsiteOfficial website
Footnotes / references

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,[2] 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.[3]

In 1972, Takuo Aoyagi, a researcher at the company, invented and patented the basic principles of pulse oximetry.[4] Two years later he developed the world's first pulse oximeter, which has helped improve patient safety during anaesthesia.[5]


  1. ^ "Key Facts". Nihon Kohden. Retrieved September 9, 2015.
  2. ^ a b "Company Snapshot". Bloomberg L.P. Retrieved September 9, 2015.
  3. ^ "Nihon Kohden secures neurodiagnostic contract with Novation". mHealth News. HIMSS. August 19, 2015. Retrieved September 9, 2015.
  4. ^ Edmond I Eger II; Lawrence Saidman; Rod Westhorpe (September 14, 2013). The Wondrous Story of Anesthesia. Springer Science+Business Media. p. 412. ISBN 978-1-4614-8441-7.
  5. ^ "Nihon Kohden's Dr Takuo Aoyagi receives 2015 IEEE Medal for innovations in healthcare technology". Indian Express Limited. September 8, 2015. Retrieved September 9, 2015.

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