Location History:
- Owariasahi, JP (1999)
- Aichi-ken, JP (1997 - 2003)
- Aichi-gun, JP (2005)
- Nisshin, JP (2005 - 2017)
- Nagakute, JP (2017 - 2024)
Company Filing History:
19 out of 36,713 
7 out of 1,139 
3 out of 19,748 
Years Active: 1997-2025
Title: Innovations of Hideo Nakai: A Visionary Inventor in Electric Motor Systems
Introduction: Hideo Nakai, a prolific inventor based in Nisshin, Japan, holds an impressive portfolio of 27 patents that showcase his ingenuity in electrical engineering. His latest contributions to electric motor systems and rotary electric machines reflect a deep understanding of motor dynamics and electrical efficiencies.
Latest Patents: Among his latest patents, Hideo has developed an innovative electric motor system that integrates a battery, inverter, electric motor, zero-phase switching arm, and control unit. This advanced system utilizes DC power, which the inverter converts into three-phase AC power, efficiently driving the rotor of the electric motor. In addition, the zero-phase current is cleverly adjusted via the zero-phase switching arm, enabling torque to be generated not only by the three-phase AC current but also by the zero-phase current.
Hideo’s patented rotary electric machine is another testament to his inventive prowess. It features an annular stator and both inner and outer rotors, along with a unique arrangement of toroidal coils. This design maximizes the interaction between the coils and stator teeth, offering significant advantages in performance and efficiency due to the higher number of coils arranged in the outer slots compared to the inner slots.
Career Highlights: Throughout his career, Hideo Nakai has made significant strides in the field of electrical engineering. His tenure at Toyota Motor Corporation has been particularly noteworthy, where he contributed to various innovative projects. Working with pioneering companies like Toyota Jidosha Kabushiki Kaisha and Toyota Central R&D Labs, Hideo has played a crucial role in advancing the technology behind electric motors.
Collaborations: Hideo’s work has been enhanced through collaborations with fellow innovators, including Kenji Hiramoto and Hiroki Ohtani. Together, they have pushed the boundaries of what is possible in motor technologies, fostering an environment of creativity and technical excellence.
Conclusion: Hideo Nakai stands out as a remarkable inventor in the realm of electric motor systems. With a robust portfolio of 27 patents and significant contributions to major automotive organizations, he continues to inspire future innovations. His inventive spirit and dedication to engineering excellence make him a valuable asset to the field of electrical engineering.