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Title: Jeol  
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Subject: INCJ, Electronics industry in Japan, DART ion source, Akishima, Tokyo, List of mass spectrometry software
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Type Corporation
Traded as TYO: 6951
Founded 1948
Headquarters Akishima, Tokyo, Japan
Key people

Terukazu Eto, Chairman of the Board, Chief Executive Officer, Representative Director Yoshiyasu Harada, President, Chief Operating Officer, Representative Director

Toshihito Suzuki, Chief Director of Finance
Products Scientific instruments

JEOL, Ltd. (日本電子 Nihon Denshi, Nihon meaning Japan and Denshi meaning electron) is a manufacturer of electron microscopes and other scientific instruments. Its headquarters are in Tokyo, Japan, with 25 subsidiaries (as of March 2007) and two associated companies.

For the year 2006, JEOL reported net sales of 93,291 million Japanese yen. [1]


The company was founded in 1949 as the Japan Electron Optics Laboratory Company, Limited in Mitaka, Tokyo, in 1949, and produced its first commercial model transmission electron microscope the year later, although a prototype microscope had been sold to Mitsubishi prior to the founding of the company. Overseas sales began in 1956 with the sale of a system to France. In 1961, the company was renamed JEOL, Limited, with the first overseas subsidiary JEOL Company (USA) Inc., established in 1962 and headquartered in Peabody, MA.

In 1963, JEOL produced their first mass spectrometer, followed by the company's first scanning electron microscope in 1966.


JEOL Ltd. has four business segments. Electron Optics manufactures scanning electron microscopes, transmission electron microscopes and scanning probe microscopes, along with related equipment. The Analytical Instruments section's products include mass spectrometers, nuclear magnetic resonance and electron spin resonance equipment. The Industrial Equipment segment covers a range of equipment particularly targeted at the semiconductor industry, such as electron beam sources, wafer process monitors, and plasma gun series. Finally, the Medical Equipment segment manufactures automatic analysis devices, clinical diagnostic systems and amino acid analyzers.


  • The JEOL AccuTOF JMS T100LC mass spectrometer won a bronze award at the 2002 Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy Pittcon editors awards
  • The DART ion source also won a gold award at the 2005 Pittsburgh Conference Pittcon editors awards

In popular culture

The company's direct analysis in real time (DART) mass spectrometry system has appeared on the television program CSI: NY.[1][2]

See also


  1. ^ Mass Spectrometry - Base Peak - The web's leading Mass Spectrometry Resource
  2. ^ Salem News Online

External links

  • JEOL, Limited Global Site
  • JEOL, Limited (Japanese)

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