Science and Technology Inst. Co. Ltd.

Science and Technology Inst. Co. Ltd. (株式会社科学技術研究所), commonly known as Kagiken (かぎけん) or STi, is a Japanese software company founded on December 2, 1998, and headquartered in Kojimachi, Chiyoda-ku, Tokyo. The company specializes in the development, sales, and support of scientific and engineering simulation software, most notably KeyFDTD, an electromagnetic wave analysis package based on the finite-difference time-domain (FDTD) method. It also provides CAE services including contracted analysis, technical consulting, and development of control systems for experimental equipment. Its simulation portfolio covers electromagnetic waves, thermal fluid dynamics, and multibody dynamics. Beyond software, Kagiken operates a content business, publishing web encyclopedias such as the Kagiken Flower Encyclopedia (かぎけん花図鑑) and video channels under the name Kagiken Publishing. The company's stated mission is to research science and technology for social contribution, guided by the "Kagiken Declaration." Its clientele includes major Japanese research institutes, universities, and corporations such as AIST, RIKEN, JAXA, NICT, Toyota, Canon, Sony, and Panasonic. Kagiken remains a privately held company with capital of 10 million yen. It is led by President and CEO Mizuho Yagishita, with Director Aki Fujita heading the science and technology division. The company has received recognition for its technical expertise, including joint research with the University of Tokyo and presentations at international conferences like PIERS.

Science and Technology Inst. Co. Ltd. (株式会社科学技術研究所), commonly known as Kagiken, was founded on December 2, 1998, in Kojimachi, Chiyoda-ku, Tokyo, where it remains headquartered. The company was established to develop scientific and engineering software, focusing on numerical simulation. Its core expertise lies in the finite-difference time-domain (FDTD) method for electromagnetic wave analysis, which became the foundation of its flagship product, KeyFDTD. In the 2010s, Kagiken expanded its product line and services. In 2013, it published the book "Who am I? Animal Edition." In 2015, it released KeyAgri, a thermal airflow analysis system for horticultural facilities, and the permittivity measurement system "Dielectric Measure-kun." It also began accepting interns and established a no-overtime day. In 2016, the company released the permittivity and permeability database permittivity.jp, launched the customer portal "My Kagiken," and began the "Kagiken Consultation Room" service. It also published the first volume of its "Science and Technology Research Book" series. In 2017, Kagiken released the "Kagiken Flower Encyclopedia" (かぎけん花図鑑), marking its entry into web content. It also published an explanatory page on the FDTD method and renewed its logo. In 2018, the company celebrated its 20th anniversary. In 2019, it released "Electromagnetic Analysis Cloud." In 2020, it shifted to a telework system. In 2021, Dr. Makoto Tanabe was appointed as technical advisor, and the website was renewed. In 2022, Kagiken added a "Contents" section to its website and released free web versions of its "Who am I?" series. In 2023, it celebrated its 25th anniversary, and its content was featured on national television programs. In 2024, it released KeyFDTD version 4.0.2 (KeyFDTD for HPC), later renamed KeyFDTD Pro, and launched the DataHandler analysis tool. In 2025, it continued to update its software, including prpsMaker and KeyFDTD, and announced an introductory book on electromagnetic analysis. The company remains active in research, with presentations at international conferences such as PIERS and publications in ACS journals.

• Company founded in Kojimachi, Chiyoda-ku, Tokyo

• Published "Who am I? Animal Edition"

• Published "Science and Technology Research Book Vol. 1"

• Released KeyAgri thermal airflow analysis system

• Released "Dielectric Measure-kun" measurement system

• Released permittivity.jp database

• Opened customer portal "My Kagiken"

• Released "Kagiken Flower Encyclopedia"

• Celebrated 20th anniversary

• Released "Electromagnetic Analysis Cloud"

• Dr. Makoto Tanabe appointed as technical advisor

• Celebrated 25th anniversary

• Released KeyFDTD version 4.0.2 (KeyFDTD for HPC)

• KeyFDTD for HPC renamed to KeyFDTD Pro

• Released latest version of KeyFDTD

Developer of specialized scientific simulation software and provider of CAE services, with a side content business publishing web encyclopedias and educational videos.

• KeyFDTD

  Electromagnetic wave analysis software based on the FDTD method, capable of simulating nano materials, plasmonics, near-field optics, THz devices, microwave heating, waveguides, and more, considering wavelength dispersion of material properties.

• KeyFDTD Pro

  High-performance version of KeyFDTD, formerly known as KeyFDTD for HPC.

• KeyFlow

  Thermal fluid analysis software.

• KeyPlot

  Data visualization software.

• KeyAgri

  Thermal airflow analysis system for horticultural facilities.

• DataHandler

  Electromagnetic analysis data analysis tool.

• prpsMaker

  Tool for creating and editing material property files for KeyFDTD.

• permittivity.jp

  Database of permittivity and permeability data.

• Kagiken Flower Encyclopedia

  Web encyclopedia of flowers.

1. 1株式会社科学技術研究所 公式サイトkagiken.co.jp
2. 2沿革kagiken.co.jp
3. 3会社概要kagiken.co.jp
4. 4Wikidatawikidata.org