This inventor holds 3 USPTO granted patents. Top assignee: Nippondenso Co., Ltd.. Active years: 1977-1981.
Location History:
- Toyota, JA (1977 - 1978)
- Toyota, JP (1981)
Company Filing History:
Years Active: 1977-1981
Title: Masayoshi Niimi: Innovator in Electric Vehicle Technology
Introduction
Masayoshi Niimi is a prominent inventor based in Toyota, Japan. He has made significant contributions to the field of electric vehicle technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and control of electric vehicles, showcasing his expertise and innovative spirit.
Latest Patents
Niimi's latest patents include an electric vehicle control apparatus and a chopper control system. The electric vehicle control apparatus is designed to be fixed onto an electric vehicle body and includes a main semiconductor device and a flywheel diode. This apparatus features a base member that is in close contact with the vehicle body, a heat sink made of a metallic plate, and connecting terminals mounted on pellets that constitute the main semiconductor device and the flywheel diode. Additionally, at least one auxiliary electric device is fixed onto the heat sink.
The chopper control system is aimed at controlling the power supplied from a DC power source to a load with inductance. It comprises a chopper circuit for on-off control of the main current and a duty cycle control circuit to manage the duty cycle of the chopper circuit. A flywheel circuit is also included, which helps prevent the main current from exceeding a predetermined value by detecting the counter electromotive force induced in the flywheel circuit.
Career Highlights
Masayoshi Niimi is associated with Nippondenso Co., Ltd., a company known for its advancements in automotive technology. His work has been instrumental in developing innovative solutions that enhance the performance of electric vehicles.
Collaborations
Throughout his career, Niimi has collaborated with notable colleagues, including Hidetoshi Kato and Kinya Ishida. These collaborations have contributed to the successful development of his patented technologies.
Conclusion
Masayoshi Niimi's contributions to electric vehicle technology through his patents reflect his dedication to innovation and excellence in the field. His work continues to influence the automotive industry, paving the way for future advancements in electric vehicle systems.