Company Filing History:
2 out of 3,781 
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Years Active: 1998-2005
Title: Akira Ohmichi: Innovator in Drive Circuits and Inverter Devices
Introduction
Akira Ohmichi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of drive circuits and inverter devices. With a total of 4 patents to his name, Ohmichi's work has had a considerable impact on modern technology.
Latest Patents
One of his latest patents is a drive circuit that includes a totem-pole output stage featuring a top arm and a bottom arm. This circuit also comprises a pre-drive circuit with a top arm driver and a bottom arm driver, along with a power supply voltage boosting power supply circuit. The boosting power supply circuit enhances the voltage for both the top and bottom arm drivers, ensuring efficient operation.
Another significant invention is an inverter device capable of reducing through current. In this device, a first transistor is activated when an H-level signal is input. A power supply voltage is applied to the gate electrode of a first switching element, which charges the miller capacitance of the switching element. Consequently, the gate voltage rises gradually, allowing for controlled switching speeds. This innovation effectively reduces through current caused by the backward recovery current of a fly-wheel diode connected to the first switching element.
Career Highlights
Throughout his career, Akira Ohmichi has worked with prominent companies such as Renesas Technology Corporation and Mitsubishi Electric Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the field.
Collaborations
Ohmichi has collaborated with several talented individuals, including Keiichiro Numakura and Hideki Miyake. These partnerships have fostered innovation and creativity in his projects.
Conclusion
Akira Ohmichi's contributions to drive circuits and inverter devices highlight his expertise and innovative spirit. His patents reflect a commitment to advancing technology and improving electrical engineering applications.