Dia Material Co., Ltd.
ダイヤマテリアル株式会社
Ticker
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Listed market
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Country
Employees (non-consolidated)
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Related companies
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§01
Basic information
- Head office
- 1-579 Akahira, Akahira Town, Hokkaido, Japan
- Chief executive
- Yoshinori Miyazawa
- Capital
- 90,000,000 JPY
- Employees (non-consolidated)
- Employees (consolidated)
- Start date
- End date
§02
Websites
§03
Business
Manufacturing of industrial synthetic diamondsProcurement of industrial synthetic diamondsSales of industrial synthetic diamonds
§04
Related companies
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| 住石マテリアズ株式会社 | ||||||||
| ASO CORPORATION |
Names without a link are companies not yet registered in OpenBizGraph
§05
Network
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§06
History
1987: Commencement of synthetic polycrystalline diamond experiments in collaboration with Tokyo Institute of Technology.![]()
1991: Establishment of subsidiary Izumi Diamond Co., Ltd. and commencement of commercial manufacturing and sales.![]()
2000: Transfer of the sales division to the Diamond Sales Department of Sumitomo Coal Mining Co., Ltd.’s New Materials Division, focusing on magnetic heads and HD fields with a trend toward micro‑particleization.![]()
2002: Expansion of classification process equipment in response to increased demand from optical fields such as sapphire.![]()
2003: Renamed to Diamond Material Division of Sumitomo Coal Mining Co., Ltd.’s New Materials Division and fully transferred the manufacturing division.![]()
§07
News
There is no news.
§08
Public records
National Tax Agency basic information4430001071217
- Trade name
- ダイヤマテリアル株式会社
- Trade name (kana)
- ダイヤマテリアル
- Name in English
- Corporation type
- 301
- Address
- 〒079-1143 北海道赤平市字赤平579番地1
- Postal code
- 0791143
- Prefecture code
- 01
- City code
- 218
- Address outside Japan
- Prefecture in English
- City in English
- Address outside Japan in English
- Corporate number assignment date
- 2016-04-12
- Update date
- 2018-07-10
- Change date
- 2016-04-12
- Registry closure date
- Reason for registry closure
- Successor corporate number
- Details of the change
- Latest record
- 1
- Excluded from search
- 0
- Processing type
- 01
- Correction type
- 1
- Trade name image ID
- Address image ID
- Sequence number
- 83326
METI gBizINFO4430001071217
- Corporate number
- 4430001071217
- Trade name
- ダイヤマテリアル株式会社
- Trade name (kana)
- ダイヤマテリアル
- Trade name (alphabet)
- Registry closure date
- Reason for registry closure
- Registered address
- 北海道赤平市字赤平579番地1
- Postal code
- 0791143
- Prefecture
- 北海道
- Prefecture code
- 01
- City or district
- 赤平市
- City code
- 218
- Street address
- 字赤平579番地1
- Organisation type
- 301
- Processing type
- 01
- Correction type
- 1
- Status
- Representative
- Capital
- Employees
- Employees (male)
- Employees (female)
- Business summary
- Website URL
- Year founded
- Business category
- Date established
- Unified government qualification - grade
- Unified government qualification - business items
- Update date
- 2018-07-10
- Key information
- 4430001071217
§09
Sources & updates
DOMAINOwn domain:No
UPDATED2026-10-17 14:56 · Model: gpt-4.1-nano