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Company profile

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‘A company that has stayed constantly at the top of the global niche for a hundred years’ – this is what we are aiming for.

リカザイ株式会社|会社概要

Established: November 19, 1947
Representative: Yoshio Komuro, Representative Director
Capital: 20 million yen
Number of employees: 25
Headquarters location: 〒 211-0011

1810-7 Shimonumabe, Nakahara-ku, Kawasaki-shi, Kanagawa

Tohoku Office: S.S.T Fukushima 9F

8-24 Jinbacho, Fukushima City, Fukushima Prefecture
Business: Manufacture and sale of various rolled metal foils Manufacture and sale of secondary processed metal products

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Our Management Philosophy

We timely deliver products and services of excellent quality, 
and contribute to society through people-
and environmentally-friendly corporate activities.

Establishment
of a sound
management
foundation

Enhanced
customer
satisfaction

Pursuit of
excellent
technology

Pursuit of
perfection
for high quality

Respect for
the individual

Contribution
to society

The framework of our management philosophy

History

An episode in the life of the founder

A man from the same town as the Buddhist monk Ryôkan

There was a man named Junichi Akiyama who was born in Izumozaki.
He said he wanted to eat fugu globefish in Shimonoseki and I treated him to an unsophisticated meal prepared Western-style; he went off to eat it alone and came back in high spirits. 
After resigning as president of the Kanto Special Steel Works, a subsidiary of Sumitomo, he founded a company that did extremely thin rolling of precious metals such as nickel and molybdenum. Saying it was in the national interest, he put up with losses and looked forward to the future.
He did a lot for me, saying it was a thank-you for the two years he suffered with stomach ulcers, and anyway he lived close by. 
His little workshop that no one knew about was visited by Prince Takamatsunomiya.
The day will surely come when the faithful Akiyama will be rewarded.
(From Sumitomo Kaisoki, (a memoir of the Sumitomo years), by Jun Kawada)

 Junichi
Akiyama

Founding
President

Shigeo
Akiyama

Second
President

Seiji
Nohara

Third
President

Yoshio
Komuro

Current
President

Nov.1947

The founder Junichi Akiyama (Founding president of Kanto Special Steel Works) established Rikagakuzairyo Co., Ltd., in Fujisawa City, Kanagawa Prefecture, opening a laboratory glassware workshop in the Fujisawa premises of Tokyo Gas and a metal rolling workshop in Oi-Samezu Town, Shinagawa Ward, Tokyo.

Aug.1951

The President of the Japan Institute of Invention and Innovation, the late Prince Takamatsunomiya visited the metal rolling workshop and observed the foil rolling process.

Oct.1951

Akiyama presented his theory of foil rolling processing at the autumn meeting of the Institute of Metals and Materials, and on the recommendation of the Ministry of International Trade and Industry exhibited foil products at the World Metallurgical Congress held in Detroit, USA.

May.1955

Production of FRD (Fuso Japan metal Rikagakuzairyo joint development material Duralumin) diaphragms for audio equipment, adopted by Tokyo Tsushin Kogyo Co., Ltd (now Sony) 

May.1959

Completion of main factory at present location, 1810-7 Shimonumabe, Nakahara Ward, Kawasaki City

Feb.1965

Contract to produce metal foils for the USA

Aug.1971

Contract to produce metal foils for West Germany

Jan.1975

Shigeo Akiyama was inaugurated as President and CEO

Nov1979

Titanium etc., rolled to a thickness of 0.003mm (= 3μm)

Jul.1984

Remodelling of main factory completed, new installation of cold reversing 20-Hi rolling mill (product guaranteed thickness 0.003mm = 3μm) manufactured by Sundwig Co., Germany

Mar.1986

Manufacture and sale of titanium coiled foil with a thickness down to 0.001mm (= 1μm), from the 20-Hi rolling mill

Sep.1987

On the 40th anniversary of the company’s founding Rikagakuzairyo Co., Ltd., was renamed RIKAZAI.

Jun.1995

Seiji Nohara was inaugurated as President and CEO

Apr.1996

Office work was streamlined with the introduction of computers and accounting software

Jul.2000

Connection to network, start of electronic ordering and order receipt

May.2003

Accredited as a Green Partner by Sony Corporation

Dec.2004

Accredited for Green Procurement by Canon Group

Jul.2005

Yoshio Komuro was inaugurated as Representative Director

Oct.2005

ISO14001(2004)certification

May.2016

Completion of new building, start of business

Sep.2017

Accredited as a Green Partner by Nikon Corporation

Jan.2018

Accredited as a Kawasaki City Monozukuri Brand

Feb.2019

Awarded both the KIP Prize and the KNBC Prize at the Kanagawa Business Audition

Oct.2019

Held a mascot-character competition in an industry-academia collaboration with Nihon Kogakuin

Nov.2019

First solo exhibition at COMPAMED 2019 (International exhibition of medical device technology and components) in Germany 

Jan.2020

Received the 2019 Kanagawa Prefecture Excellent Factory Award

Oct. 2020

Registration as a Kanagawa SDGs Partner (4th term)

Nov. 2020

Introduction of teleworking (from home)  / establishment of teleworking regulations

Nov. 2020

Construction of wireless LAN in the factory in our headquarter

Dec. 2020

Start of our new website and our online store

Apr. 2021

Feb.2022

Certification as "1st Kawasaki SDGs Gold Partner"

Kawasaki City Award for Businesses Promoting Workplace Reform and Productivity Improvement

Aug. 2023

Opening of the Tohoku Office

2023. 10

経理を除く、全業務システムをサイボーズ社のkintone化

2024. 1

本社一階のセブンイレブン武蔵小杉新南口店にAEDを設置

2024. 3

実労働15分+休憩15分短縮し、就業時間を30分繰り上げ(8:30〜17:00)

2024. 11

製造部グループリーダーが令和6年「かわさきマイスター」に認定

故高松宮殿下が金属圧延工場に台臨

The late Prince Takamatsunomiya 
visited the metal rolling workshop.

理化学材料株式会社 武蔵小杉工場

Musashikosugi factory
of Rikagakuzairyo Co., Ltd.

リカザイ株式会社|神奈川県優良工場表彰受賞

Received the 2019 Kanagawa 
Prefecture Excellent Factory Award

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Kawasaki City Award for Businesses Promoting Workplace Reform and Productivity Improvement

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Tohoku Office Open(Aug. 2023)

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Tohoku Office Open(Aug. 2023)

Principal Business Partners

Batteries /
 Next-generation
vehicles

Toyota Central R&D Labs., Inc.
Honda R&D Co., Ltd.
MAGNEX CO., LTD.

Precision machinery

CANON ELECTRONICS INC.
Sony Global Manufacturing
 & Operations Corporation
Tokyo Electron Ltd.
NIKON CORPORATION

Industrial machinery

Panasonic Corporation

Aeronautics / 
Space / Defence

Tokyo Aircraft Instrument Co.,Ltd.
NEC Corporation

Consumer electronics

Hitachi-Johnson Controls Air Conditioning, Inc.

Measuring / 
Analytical equipment

KYOWA ELECTRONIC INSTRUMENTS CO., LTD. 
Glosel Co., Ltd.
Kett Electric Laboratory
SANKO ELECTRONIC LABORATORY CO., LTD.
TOSHIBA CORPORATION
SHOWA MEASURING INSTRUMENTS CO.,LTD.
Hamamatsu Photonics K.K
Fujifilm Corporation
MicroCraft K.K
Rigaku Corporation

Medical instruments

Alpha Rion Co., Ltd.
PROSPER Co.,Ltd.

Materials

Taiyo Koko Co., Ltd.
Mitsubishi Materials Corporation

Trading companies / Wholesalers

INDUSTRIAL SUPPLIERS CO.,LTD.
OGUMA Group
Suzuki Shokan Co., Ltd.
Hayashi Kasei Co., Ltd.
MURATA YOUHAKU & CO.,LTD.

Processing
manufacturers

ALPHASEIKO CO., LTD.
KOKEN CHEMICAL CO., LTD
Senzoku Quality KK
Nano-Process Co., Ltd.
Hirai Seimitsu Kogyo Corporation
Maznaga Precision Co.,Ltd
Material Inc.
Meltec Corporation

Public research
 institutes / 
Universities / 
Technical colleges

National Institute of Advanced Industrial Science and Technology
National Institute of Materials Science
Institute of Physical and Chemical Research
Research Institute for Electromagnetic Materials
High Energy Accelerator Research Organization
Various graduate school laboratories, universities / 
technical college laboratories

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