This inventor holds 2 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Taga Engineering Co., Ltd., Hitachi Taga Engineering, Ltd.. Active years: 1991-1992.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 42,743 
1 out of 2 
1 out of 6 Years Active: 1991-1992
Title: Eiji Toyoda: Innovator in Motor Technology
Introduction
Eiji Toyoda is a notable inventor hailing from Hitachi, Japan. He has made significant contributions to the field of motor technology, holding 2 patents that showcase his innovative spirit and technical expertise.
Latest Patents
Toyoda's latest patents include a deceleration apparatus for motors and a drive circuit for use in motors. The deceleration apparatus is designed for an AC servo motor utilized in industrial sewing machines. It performs a regenerating braking operation during the motor's deceleration period. Initially, an intermittent regenerating braking operation is executed by supplying current in the control circuit of the motor drive circuit. Following this, a continuous regenerating braking operation is carried out. The drive element, which consists of a switching element or a transistor in the control circuit, is protected during the intermittent regenerating braking operation or when a small regenerating braking current is applied. His second patent involves a permanent magnet reversible synchronous motor. This motor features a rotor with a rotor core fixed to a motor shaft and an even number of permanent magnets arranged circumferentially. The rotor core has projecting portions over each permanent magnet, with the width of these portions differing from the pitch of the stator's slots. A position detector is included to detect the permanent magnet position of the rotor, with detectors arranged to have predetermined phase differences.
Career Highlights
Throughout his career, Eiji Toyoda has worked with prominent companies such as Hitachi, Ltd. and Hitachi Taga Engineering, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in motor technology.
Collaborations
Toyoda has collaborated with notable coworkers, including Kazuaki Takada and Jun Matsubayashi. Their combined expertise has contributed to advancements in the field of motor technology.
Conclusion
Eiji Toyoda's contributions to motor technology through his patents and career achievements highlight his role as an influential inventor. His work continues to impact the industry, showcasing the importance of innovation in engineering.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile