Riron Co., Ltd.
株式会社理論社
Ticker
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Listed market
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Country
Employees (consolidated)
21
Related companies
0
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Basic information
- Head office
- 2-5 Kanda Surugadai, Chiyoda-ku, Tokyo
- Chief executive
- Katsuya Tajiki
- Capital
- 10,000,000 JPY
- Employees (non-consolidated)
- Employees (consolidated)
- 21 people
- Start date
- 2010-12-15
- End date
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Websites
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Business
Book editingBook productionBook publishingBook sales
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Related companies
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Network
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News
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Sources & updates
DOMAINOwn domain：Yes
UPDATED2026-11-08 16:00 · Model: gpt-4.1-nano