1946
November
Established company (headquarters) in Hiranuma, Nishi-ku, Yokohama
会社設立時、このビルの2階に本社を構えた
1947
July
The company begins equipping, maintaining, and repairing radio frequency detectors for the whaling fleet in the Antarctic Ocean.
1952
April
With the establishment of the Maritime Patrol Force, the company began repair and overhaul operations of electronics-related equipment on board ships.
1955
June
Began outfitting support operations for the Maritime Self-Defense Force destroyer Yukikaze at the Kobe Shipyard of Mitsubishi Heavy Industries, Ltd.
1955年頃の工場（西区北幸）
1958
March
Begins research and development work on aerials and related equipment, etc.
1959
June
The company began repair and overhaul operations of aircraft-mounted electronic equipment for the Maritime Self-Defense Force.
1968
October
Begins design, manufacturing, maintenance and servicing of communication aerials and related equipment for submarines.
1969
May
Head office and factory relocated (Kamome-cho, Naka-ku) Head office
1969年頃の本社
1971
November
The company begins system engineering work for the Maritime Self-Defense Force's new ship weapon system.
1974
August
The company begins designing and manufacturing laser-applied equipment.
1983
November
Received the Defense Equipment Association Award.
1985
November
Received the Defense Acquisition Association Award.
1985年頃の本社工場（中区かもめ町）
1986
August
Begins repair work of electronic equipment on board anti-submarine patrol aircraft (P-3C).
1988
November
The company began weapons systems engineering services for the newly built Aegis ships of the Maritime Self-Defense Force.
1990
September
Received a letter of appreciation from the Director General of the Defense Agency.
1994
November
Received the Defense Acquisition Association Award.
1996
November
50th anniversary of foundation
2000
April
Gained Certification for JIS Q 9001 (Quality Management System (QMS)) certification.
2002
July
MLS Ltd. was established as a joint venture with Mitsubishi Electric Corporation, Lockheed Martin Corporation, and Mitsubishi Corporation.
2004
October
Head office and factory opened in Kanazawa-ku, Yokohama, and the Yokohama area factories were integrated.
本社工場現在
2006
August
Gained Certification for JIS Q 14001 (Environmental Management System (EMS)) certification (head office and factory)
2007
April
An underwater equipment (transmitter/receiver) maintenance shop was newly established at the head office Transmitter/receiver test water tank
送受波器試験水槽
2009
March
Obtained JIS Q 27001 (Information Security Management System (ISMS)) certification
2013
November
Received the Defense Infrastructure Development Association Award.
2017
October
Received a letter of appreciation from the Minister of Defense.
2018
October
Completion of the North Wing of the Head Office and Plant
2019
January
JIS Q 9100 certification (Quality Management System (AQMS)) certification (head office and plant) "Scope of certification: provision of services (maintenance, servicing, etc.) for specified equipment for onboard aircraft".
October
Completion of an anechoic chamber building at the head office and plant
電波暗室
2023
November
Received the Defense Structure Improvement Association Award from the Defense Structure Improvement Association.
2024
August
Signed an agreement with Raytheon to manufacture shipboard radar components for the U.S. Navy.
