Notice Regarding Executive Personnel Changes
Tokyo Koatsu Yamazaki Co., Ltd. announced executive personnel changes on August 28, 2026. The announcement did not provide specific details.
TOKYO KOATSU Co., Ltd.
東京高圧山崎株式会社
§01
Basic information
- Head office
- 1-9-8 Shibuya, Shibuya-ku, Tokyo
- Chief executive
- Takao Nikaido
- Capital
- 779,294,000 (7 100 million)
- Employees (non-consolidated)
- 185 people
- Employees (consolidated)
- 185 people
- Start date
- 1972-06-06
- End date
§02
Websites
§03
Business
Manufacture and sale of industrial gasesManufacture and sale of specialty gasesSale of welding materials and equipmentSale of chemicalsManufacture and sale of urethane insulation panelsSale of semiconductor-related consumables and equipmentFine products businessIndustrial gasesMedical gasesSpecialty gasesNext-generation refrigerant gasesOther gasesWelding materialsWelding equipmentAutomated welding systemsFA and industrial equipmentOther equipmentCarbon dioxide neutralization equipmentFoam separation deviceGas circulation (recovery) and purification equipmentGlove boxesMOCVD deviceVacuum deposition deviceMass flow controllersFine carbonUltrasonic processing machineBasic industrial chemicalsSynthetic resinSpecial chemicalsOther chemicals
§04
Related companies
| Company name | Group | Parent | Subsidiary | Customer | Supplier | Alliance | Bank | Shareholder |
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| Ushio Commerce Co., Ltd. | ||||||||
| オガワ産業株式会社 | ||||||||
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| レアガスグループ | ||||||||
| North Kanto General Gas Center Co., Ltd. | ||||||||
| Taihei Industrial Transportation Co., Ltd. | ||||||||
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Names without a link are companies not yet registered in OpenBizGraph
§05
Network
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§06
History
Yamazaki Trading Co., Ltd. Established, Capital 500 thousand yen
Became an authorized distributor for Toyo Electrode Industries Co., Ltd. (predecessor of Yawata Welding Rod Co., Ltd.).
Capital increased to ¥1 million.
Became a designated wholesaler for Yawata Welding Rod Co., Ltd. (predecessor of Nippon Steel Welding & Engineering Co., Ltd.) upon its establishment.
Capital increased to ¥3 million.
Opened the Chiba Sales Office.
Capital increased to ¥5 million.
Capital increased to ¥5,000 thousand
Became an equipment distributor for Mitsubishi Electric Corporation.
Capital 3,000 thousand yen
Established Keihin High-Pressure Gas Co., Ltd. with capital of ¥3 million.
Company renamed Keihin High-Pressure Gas Industries Co., Ltd.
Capital increased to ¥5 million.
Osaka Sales Office opened
Opened the Osaka Sales Office.
Tsu Sales Office opened
Capital increased to ¥5,000 thousand
Capital increased to ¥8 million.
Capital increased to ¥8,000 thousand
Capital increased to ¥10 million.
Capital increased to ¥10,000 thousand
Became an authorized distributor upon the establishment of Nippon Steel Welding Products & Engineering Co., Ltd.
Capital increased to ¥12 million.
2-22-1 Minami-Aoyama, Minato-ku, Tokyo: Tokyo High-Pressure Co., Ltd. established, capital 5,000 thousand yen
Tokyo Kōta Corporation Established at 2-22-1 Minami-Aoyama, Minato-ku, Tokyo, Capital 5,000 thousand yen
Capital increased to ¥8,000 thousand
Chiba Sales Office opened
Capital increased to ¥10,000 thousand
Chiba branch office opened
Kawasaki branch office opened
Headquarters moved to 1-14-8, Shibuya-ku, Tokyo
Capital increased to ¥20,000 thousand
Capital increased to ¥12,000 thousand
Capital increased to ¥15 million.
Absorbed Daiichi Shoji Co., Ltd.
Capital increased to ¥40,000 thousand
Capital increased to ¥15 million.
General gas filling plant completed at the Saitama facility
Capital increased to ¥60,000 thousand
Saitama facility: pressure vessel test lab completed
Saitama Branch Opening
Opened the Okawa Branch Office.
Saitama facility: pressure vessel test lab completed
Okawa Branch Office opened
Absorbed Nissho High-Pressure Co., Ltd.
Osaka Branch Opening
Absorbed Toa Kosan Co., Ltd.
Changed its trade name to SD Gas Sales Co., Ltd.
Become an equipment distributor for Matsushita Electric Industrial Co., Ltd.
Capital increased to ¥99,999 thousand
Keiyo Office: Integrated Gas Filling Plant completed
Keiyo branch office opened
Capital increased to ¥220,449 thousand
Changed its trade name to SD Gas Sales Co., Ltd.
Saitama facility new building completed
Special Gas Plant completed at the Keiyo Site
Opened the Fujisawa Sales Office
Acquired shares in SD Gas Sales Co., Ltd. from Showa Denko Co., Ltd.
Tokyo Head Office opened
Transferred shares owned by Showa Denko Co., Ltd. to Tokyo Koatsu Co., Ltd.
Sodegaura Eco Station completed
Saitama Office: Dedicated Medical Gas Plant completed
Jōnan Branch Opening
Capital increased to ¥441,449 thousand
Tokyo Head Office opened
Ichihara Gas Center opened
Chiba branch office moved
Merged with Rikyo Shoji Co., Ltd. (Tokura Branch Office)
Merged with Tokyo High Pressure Co., Ltd.
Acquired part of the business of Sanshin Shoko Co., Ltd.
Capital increased to ¥779,294 thousand
Merged with S.D. Gas Sales Co., Ltd.
Capital increased to ¥50,000 thousand
Merged with Toatsu Gas Equipment Co., Ltd. (Joto Sales Office).
Pure Create Plant opened
Merged with Tokyo High Pressure Co., Ltd.
History of Tokyo Koatsu Yamazaki Co., Ltd.
Merged with Yamazaki Shoten Co., Ltd.
Capital increased to ¥491,444 thousand
Jounan sales department: Haneda (medical) factory completed
Acquired the Kanto-region business of Saan Tech Co., Ltd.
Merged with Takisho Co., Ltd.
Jōnan Division Haneda (Medical) Plant Completion
Capital increased to ¥636,794 thousand
Merged with Taki Sho Co., Ltd.
Capital increased to ¥779,294 thousand
Capital increased to ¥636,794 thousand
Acquired part of the business of Sanshin Shoko Co., Ltd.
Capital increased to ¥779,294 thousand
Merged with Rikuryo Shoji Co., Ltd. (Tokura Branch Office)
Made Meiko Co., Ltd. a consolidated subsidiary
Acquired the business of Asahi Chemitech Co., Ltd.
Joined Keidanren (Japan Business Federation)
Made Nikko Shoji Co., Ltd. a consolidated subsidiary
Listed on the Tokyo Stock Exchange TOKYO PRO Market
Made Ogawa Sangyo Co., Ltd. a consolidated subsidiary
Merged with Nikko Shoji Co., Ltd.
§07
News
Notice Regarding Executive Personnel Changes
Notice Regarding Executive Personnel Changes
Tokyo High-Pressure Yamasaki Co., Ltd. announced changes to its executive personnel on August 28, 2025.
Notice Regarding Executive Personnel Changes
Tokyo High Pressure Yamazaki Corporation announced a change in executive personnel on August 29, 2024.
Notice Regarding Executive Appointments
Tokyo High Voltage Yamazaki Corporation announced its executive appointments on August 29, 2023.
Commemorative Lecture Held at Tokyo Prince Hotel
On June 22, 2023, a commemorative lecture by journalist Yoshiko Sakurai was held, hosted by Tokyo High Voltage Yamazaki Co., Ltd.
14th THY Meeting Held at Keio Plaza Hotel
On December 10, 2022, approximately 220 employees including affiliated companies attended and the 14th THY Meeting was held.
Tokyo High Voltage Yamazaki Corporation Listed on TOKYO PRO Market
Tokyo High Voltage Yamazaki Corporation announced that it was listed on the Tokyo Stock Exchange TOKYO PRO Market on April 19, 2022.
Notice of Designation of Liquidity Provider
Tokyo High-Pressure Yamazaki Co., Ltd. announced the designation of a liquidity provider on April 19, 2022.
Tokyo Stock Exchange TOKYO PRO Market Listing Approval
This is news announcing that Tokyo High Pressure Yamazaki Corporation was approved for listing on the TOKYO PRO Market on April 1, 2022.
Notice of Listing Application
Tokyo High Voltage Yamazaki Corporation announced that it filed an application for listing on March 18, 2022.
§08
Public records
National Tax Agency basic information9011001016224
Source: National Tax Agency Corporate Number Publication Site, basic three items
- Trade name
- 東京高圧山崎株式会社
- Trade name (kana)
- トウキョウコウアツヤマザキ
- Name in English
- Corporation type
- 301
- Address
- 〒150-0002 東京都渋谷区渋谷１丁目９番８号
- Postal code
- 1500002
- Prefecture code
- 13
- City code
- 113
- Address outside Japan
- Prefecture in English
- City in English
- Address outside Japan in English
- Corporate number assignment date
- 2015-10-05
- Update date
- 2025-12-26
- Change date
- 2025-12-01
- Registry closure date
- Reason for registry closure
- Successor corporate number
- Details of the change
- 令和７年１２月１日茨城県稲敷郡阿見町大字青宿５９１番地日興商事株式会社（9050001010002）を合併
- Latest record
- 1
- Excluded from search
- 0
- Processing type
- 71
- Correction type
- 0
- Trade name image ID
- Address image ID
- Sequence number
- 2531545
METI gBizINFO9011001016224
Source: gBizINFO (Ministry of Economy, Trade and Industry)
- Corporate number
- 9011001016224
- Trade name
- 東京高圧山崎株式会社
- Trade name (kana)
- トウキョウコウアツヤマザキ
- Trade name (alphabet)
- Registry closure date
- Reason for registry closure
- Registered address
- 東京都渋谷区渋谷１丁目９番８号
- Postal code
- 1500002
- Prefecture
- 東京都
- Prefecture code
- 13
- City or district
- 渋谷区
- City code
- 113
- Street address
- 渋谷１丁目９番８号
- Organisation type
- 301
- Processing type
- 71
- Correction type
- 0
- Status
- Representative
- 代表取締役 二階堂 貴朗
- Capital
- Employees
- 184
- Employees (male)
- 144
- Employees (female)
- 44
- Business summary
- Website URL
- https://www.tokyo-koatsu.com/
- Year founded
- Business category
- I:卸売業、小売業
- Date established
- 1972-06-06
- Unified government qualification - grade
- B|A|A|
- Unified government qualification - business items
- 113|115|122|128|204|213|215|216|219|222|227|228|309|314
- Update date
- 2025-12-26
- Key information
- 9011001016224
§09
Sources & updates
DOMAINOwn domain：Yes
UPDATED2026-11-08 11:21 · Model: ggml-org/gpt-oss-20b