This inventor holds 2 USPTO granted patents. Top assignees: Central Japan Railway Company, Idemitsu Kosan Company, Limited, Mitsubishi Denki Kabushiki Kaisha. Active years: 2000-2011.
Location History:
- Nagoya, JP (2000)
- Tochigi, JP (2011)
Company Filing History:
2 out of 119 
1 out of 2,283 
1 out of 21,351 
Years Active: 2000-2011
Title: Keizo Yoshikawa: Innovator in Magnetic Levitation Technology
Introduction
Keizo Yoshikawa is a prominent inventor based in Tochigi, Japan. He has made significant contributions to the field of magnetic levitation technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and effectiveness of magnetic levitation systems.
Latest Patents
Yoshikawa's latest patents include a ground coil device for magnetic levitation railway and a method for its manufacture. This innovative ground coil device is designed to be produced with high productivity while exhibiting less fluctuation in strength, reduced weight, and good recyclability. The device consists of a coil conductor that is covered with a thermoplastic resin molding material, which includes a specific composition of thermoplastic resin, inorganic filler, and elastomer. The manufacturing process involves filling the thermoplastic resin molding material into a cavity of a metal mold, where the coil conductor is previously inserted, using an injection molding method to create an integrally molded product. Another notable patent is a grease filling device for electric motors, which showcases his versatility in engineering solutions.
Career Highlights
Throughout his career, Yoshikawa has worked with notable companies, including Central Japan Railway Company and Idemitsu Kosan Company, Limited. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in transportation and energy sectors.
Collaborations
Yoshikawa has collaborated with esteemed colleagues such as Akihiro Fujita and Masatoshi Katagiri. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Keizo Yoshikawa's contributions to magnetic levitation technology and electric motor innovations highlight his role as a key inventor in Japan. His patents reflect a commitment to improving efficiency and sustainability in engineering applications.