KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.


Model No. AKM

Corporate Profile

Name KEYCOM Corporation
Headquarters 3-40-2 Minamiotsuka, Toshima-ku Tokyo 170-0005, Japan
Tokyo Office 3-39-14 Otsuka-Minami bldg. 2F Minamiotsuka Toshima-ku, Tokyo 170-0005, Japan
Phone: +81-3-5950-3101
FAX: +81-3-5950-3380
Website : http//
U.S. Branch

533 Airport Blvd. Suite 400 Burlingame, CA 94010 USA
Website : http//

Phone:+1-650-488-4677 FAX:+1-650-373-2002

Established September 24, 1992
CEO Hirosuke Suzuki
Bank Sumitomo Mitsui Banking Corporation
The Bank of Tokyo-Mitsubishi UFJ, Ltd. Otsuka Branch

Access (Tokyo Office)

Approx.4 minutes' walk from JR Yamanote Line Otsuka st. south exit
Approx.5 minutes' walk from Tokyo Metro Marunouchi Line Shin-Otsuka st.
Approx.15 minutes' walk from Tokyo Metro Yurakucho Line Higashi-Ikebukuro st.
Approx.4 minutes' walk from Toden Arakawa Line Otsuka Ekimae st.

Major customers (Worldwide)

Ministry of Defence(Japan), NEC(Japan), TOSHIBA(Japan), HITACHI(Japan), Canon(Japan), TOYOTA(Japan), HONDA(Japan),NTT(Japan), NTT Docomo(Japan), FUJITSU(Japan), Yale University(USA), Stanford University(USA), MIT(Massachusetts Institute of Technology)(USA), Los Alamos National Laboratory(USA), Felmi lab(USA), Jet Propulsion Laboratry(USA), Laboratory for Physical Sciences(USA), Institute of Physics University of Basel(Switzerland), Swiss Federal Office of Metology and Accreditation(Swizerland), Helsinki University of Technology(Finland), Physikalisch-Technische Bundesanstalt(Germany), Technical University Delft (The Netherlands), The university of New south wales(Australia), School of Physics(Australia), National Taiwan University(Taiwan), Korea Institute of Science and Technology(KIST)(Korea), LG Innotech(Korea) etc.

Awards, certificates of appreciation, etc.

1993 Received Dupont Plunkett Awards
For invention of millimeterwave dielectric material waveguide.

1999 Received a certificate of appreciation from High Energy Accelerator Research Organization
For contributions to construct B Factory test facilities and Long Baseline Neutrino Oscillation test facilities.

2000 Received a certificate of appreciation from National Astronomical Observatory
For development of 100 GHz multi-beam observation system installed at Nobeyama Radio Observatory Cosmic Radio Facilities.

2002 Received a certificate of appreciation from High Energy Accelerator Research Organization
For contribution to achieve the world best performance by maintaining B Factory test facilities and by improving its performance.
2013 KEYCOM's "Magnetic Property Characteristics Measurement System (from 100kHz to 14GHz)" was awarded The ICF11 New Product &Novel Technology Award at The 11th International Conference on Ferrites.

Environmental Management System

2008 Acquired KES Management System Standard (equivalent to ISO14001)
2012 Acquired ISO9001