Company Filing History:
2 out of 42,508 
1 out of 195 
Years Active: 1985-1988
Title: Yoji Tanaka: Innovator in Electric Machine Technology
Introduction
Yoji Tanaka is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of electric machines, holding a total of 2 patents. His work focuses on advancements in induction generators and variable speed rotary electric machines.
Latest Patents
Tanaka's latest patents include an induction generator/motor system and a variable speed rotary electric machine. The induction generator/motor system features an induction machine connected to a cyclo-converter. This system is designed to develop an induced voltage during transient phenomena, preventing overvoltage by switching the polarity of thyristor converters. The variable speed rotary electric machine consists of a stator with two windings connected to different power supplies. This innovative design allows for electromagnetic coupling with varying pole numbers, enhancing the machine's efficiency and performance.
Career Highlights
Throughout his career, Tanaka has worked with prominent companies such as Hitachi, Ltd. and The Kansai Electric Power Co., Inc. His experience in these organizations has contributed to his expertise in electric machine technology and innovation.
Collaborations
Tanaka has collaborated with notable coworkers, including Yukio Kitabayashi and Noriyoshi Takahashi. Their joint efforts have further advanced the development of electric machines and related technologies.
Conclusion
Yoji Tanaka's contributions to electric machine technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative designs continue to impact the industry positively.