We are a glass coating agent manufacturing company

We started off as a home renovating company back in 1998 in Chiba Prefecture. Now, we have an office/laboratory inside of TIRI (Tokyo), and our own factory in Matsuhidai (Chiba).

Our strongest points

Our Leaders

Hideaki Yamamoto

  • After experiencing corporate sales in DDI Corporation(current KDDI), he became the chairman of the promotion division of the major house manufacture. He achieved annual sales of 1.2B yen and was awarded as a top salesperson in the company.
  • He then established a home renovation company when he was 26.
  • As a home renovation company, the rust, and mold around sinks and exterior walls were the major issues. The study and countermeasures against the issues later lead to the invention of the glass coating agent HardoLass.

Managing Director
Masanori Ikeda

  • Before joining Yamamoto-Tosou CO., Ltd., later Yamamoto Holdings in 2002, he worked in sales in the finance and service industry after graduating from university.
  • From the beginning he contributed a lot in starting the glass coating division and subsidiary company. Now, he takes part in administration, sales and, sales promotion of various fields.
  • He engages in incorporate activities based on his idea of “Glass coating that is useful for the Society.”

Senior Researcher
Ph.D. Genki Odahara

  • He finished his Ph.D. in Nanoscience and Nanoengineering at Waseda University.
  • Prior to joining HardoLass as a leading researcher of R&D, some of the years he worked as a research assistant at Waseda University, then experienced a researcher role at National Research Institute and a role in the development division of the private company.
  • He specializes in a 2D thin layer such as Graphene, etc. His goal is to produce innovative results by utilizing the unique property of the thin glass membrane, HardoLass.

Outside Director
Hideaki Numai

    2009 Chuo University, School of Law Juris Doctor (J.D.) Tokyo, Japan
    2005 Waseda University, School of Political Science and Economics Bachelor of Laws (LL.B.) Tokyo, Japan
    Kotohira Partners Partner, Attorney-at-Law Tokyo, Japan (Feb. 2016-Present)
    Tax Litigation Accociation Member of directors Tokyo, Japan (2015-Present)
    Nijubashi Partners Associate, Attorney-at-law Tokyo, Japan (Oct. 2014-Jan. 2016)
    “for objection on the assessment – taxation errors never be open to the public” (“The Economist” 2018 May)
    “Corporate Crime and Plea Bargaining” (Co-author, Kinzai Institute for financial Affairs Inc., 2017)
    “Appeal Examination for Fixed Property Tax – becoming clear” (Article on Nihon Keizai Shimbun, October 3, 2016) And many more publications available on request.

Tsutomu Ando

  • After graduating from university, he worked for a securities company for 12 years, mainly in the IPO business. During his tenure, he was involved in the IPO of several companies, including start-up ventures, university-launched ventures, and fund projects.
  • Later, he moved to an operating company as the main person in charge of IPO preparation. Utilizing his experience at a financial institution and knowledge of the market, he led the company's listing on the Tokyo Stock Exchange Mothers market.
  • He joined HardoLass in January 2022 and is in charge of corporate related operations.

Sales manager
Aya Iwamoto

  • Graduated from Kanagawa University, Faculty of Engineering. Majored in the research of catalyst synthesis by introducing organic chains into mesoporous silica.
  • Experienced the development of new materials and various types of analysis as a researcher in a private company. He is conscious of looking at things from various perspectives, and the new materials he was involved in were recognized both within the company and by users.
  • In charge of sales planning and sales of HardoLass. He is working on maximizing the potential of HardoLass and communicating the appeal of HardoLass in a logical and easy-to-understand manner.

Overseas Contacts