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. AKC

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

Established September 24, 1992
CEO Hirosuke Suzuki
Bank MUFG Bank, 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


Ministry of Defence, NICT, JAXA, KEK, The Univercity of Tokyo,


Renault, AUDI, Continental, HELLA,Oxford University(UK), University of Cambridge(UK), CNRS (France), University of Paris-Sud(France), Technical University Delft (The Netherlands), ETH Zurich (Switzerland), Helsinki University of Technology(Finland), etc. in Europe

United States

Google, SRG, Jet Propulsion Laboratory, Dartmouth College, Yale University, Stanford University, MIT, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, Felmi Lab, Laboratory for Physical Sciences, NISSAN, MAZDA, etc. in USA


HYUNDAI Mortors (Korea), MANDO(Korea), LG Innotech (Korea), Korea Institute of Science and Technology(KIST) (Korea), etc.
HUAWEY(CHINA), MINTH(CHINA), Xi'an Jiaotong University, SHENGYI(CHINA), etc.
The University of New South Wales (Australia), School of Physics (Australia), etc.
National Taiwan University (Taiwan), 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