Failed to register as Favorite Page
Failed to cancel as Favorite Page
This page is already registered as a Favorite Page
You can't add your company to your favorites.

Latest update: 27/04/2017 14:20:51

Ohtama Co., Ltd.

We are a magnetic shielding and magnetic collection part manufacturer expanding business in Japan and abroad.

We manufacture and sell iron nickel alloy (Permalloy) products. We mainly handle magnetic shielding, shielding parts, magnetic field cancellation, magnetically shielded rooms, and so on.
We are expanding our business mainly to the R&D field involving government and industry. We do business with major domestic Japanese companies such as Toshiba, Hitachi, Obayashi, Kajima, and New Flare Technology. We have a track record of overseas deliveries to Samsung Electronics, TSMC, and SK Hynix. We are increasing our presence as a company that combines heat-treatment furnace processing exclusively for magnetic annealing, soft magnetic material processing technology, and magnetic field simulation technology. We are professionals in the field of magnetic shielding and magnetic collection parts, and we are expanding our scope of business while satisfying various customer needs.


Other presentation

[Company strength]
We are a unique enterprise that combines three fundamental technologies: a heat treatment furnace exclusively for magnetic annealing, soft magnetic material processing technology, and magnetic field simulation technology. We have optimized the combination of our processing technology and magnetic annealing technology in order to fully draw out the characteristics of soft magnetic material. Our company also manufactures magnetic shielding and shielding parts. We can cover processing from prototypes to mass production in manufacturing products that make use of the characteristics of Permalloy. We manufacture magnetically shielded rooms and chamber cases by measuring and analyzing the circumstances of the magnetic field and proposing a product with optimal shielding characteristics.

[Business description]
We are a specialized manufacturer of products based mainly on iron nickel alloy (Permalloy), and professionals in magnetic shielding and magnetic collection parts. Magnetic field control is indispensable for the development of semiconductor manufacturing and nano-technology, and for Japan’s national electron accelerator project. We are developing our business with a focus on magnetic shielding, shielding parts, magnetic field cancellation, magnetically shielded rooms, magnetic field measurement, and magnetic annealing. We receive orders from enterprises in the medical treatment, industrial, and R&D fields as well as general contractors and universities and research institutes. We produce products in an integrated manner covering from measurement and design to manufacturing and delivery.


[Strength of products/technologies]
Permalloy has very high magnetic permeability. It is utilized for protecting electron beams, electron microscopes, and medical equipment from surrounding magnetic fields and so on. We provide high-quality products by making use of the technology we have accumulated through years of study, as well as the latest equipment. We aim to further enhance quality in our design and manufacturing under full knowledge of material characteristics. We conduct in-house bending, machining, and drawing processing, and we also conduct integrated heat treatment to draw out magnetic characteristics. Our dedicated furnace for magnetic annealing (heat treatment capacity: 800 × 800 × 1,200 mm) is in the biggest class of heat-treatment furnaces in Japan. We can apply heat treatment to large products and to a great many parts at one time.

[Representative's message]
We are the top specialized manufacturer of faint magnetic shielding in Japan, and we have been doing our best to accumulate technology for more than 50 years. We are receiving a rapidly increasing number of inquiries on magnetic shielding from overseas customers because of recent industrialization and technology development in Asian countries. The magnetic field environment is very severe in Japan because the country is cramped and densely occupied. We realize that our magnetic shielding technology, which we have been being cultivating in such an environment, is now required in the world.

[Company structure for market development/overseas expansion]
We smoothly receive orders for shielded rooms from Korea, Taiwan, and China, but we have not yet cultivated the market in other countries. We have recently carried out many internal changes, such as expansion to a two-factory system, so strengthening our new corporate system will be a matter with higher priority. We plan to advance market expansion following these changes.

[Market share/Ranking]
We have a top-level share of the market for manufacturing magnetic shielding parts using sheet metal.

[Awards and media coverage]
Rationalized factory designation from the Governor of Tokyo, and Model SME Factory.

TV-Asahi, “Tokyo NOW” (1992); NHK, “Close-up Gendai” (1993); and Nikkan Kogyo Shimbun, “Development of a Magnetically Shielded Room with One Open Side” (2010).

Strategic Core Technology Advancement Program approval (2010).

[Joint research and development]
We filed six patent applications in the period from 2010 to 2013 related to auxiliary equipment for magnetic shielding and magnetic shielding systems. We filed two patent applications related to a heat treatment furnace and heat treatment equipment.

[Main Clients / Business History (domestic)]
Magnetic shielding parts: Toshiba and Hitachi. Magnetically shielded rooms: Obayashi, Kajima, and New Flare Technology.

[Main Clients / Business History (overseas)]
Magnetically shielded rooms: TSMC (Taiwan), Samsung Electronics (Korea), and SK Hynix.

This company is recommended by the following support organizations.

Kanto Head Office, SMRJ