Company Filing History:
Years Active: 2008-2015
Title: Keiji Kunii: Innovator in Power Conversion Technologies
Introduction
Keiji Kunii is a notable inventor based in Hitachiota, Japan. He has made significant contributions to the field of electrical engineering, particularly in power conversion technologies. With a total of 4 patents to his name, Kunii's work has had a substantial impact on the efficiency and reliability of electrical systems.
Latest Patents
One of Kunii's latest patents is for a power inverter. This invention features an electric power converter equipped with multiple power-conversion elements, a first control circuit that outputs a first control signal, an electricity storage circuit, and a second control circuit that activates when the direct-current power source is not functioning normally. The design allows for efficient management of power-conversion elements, ensuring optimal performance under varying conditions.
Another significant patent is for an on-vehicle charging generator and its rectifier unit. This innovation provides a stable MOSFET rectifying operation that remains unaffected by the power generation conditions from the engine's start. The system utilizes a timing signal synchronized with the electrical angle to execute a precise MOSFET rectifying operation, enhancing the overall efficiency of the vehicle's electrical system.
Career Highlights
Throughout his career, Keiji Kunii has worked with prominent companies such as Hitachi, Ltd. and Hitachi Automotive Systems, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in power conversion technologies.
Collaborations
Kunii has collaborated with notable colleagues, including Tokihito Suwa and Hisaya Shimizu. These partnerships have contributed to the advancement of his projects and the successful development of his patents.
Conclusion
Keiji Kunii's contributions to power conversion technologies demonstrate his expertise and innovative spirit. His patents reflect a commitment to enhancing electrical systems, making him a significant figure in the field of electrical engineering.
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