Company Filing History:
Years Active: 1989-1990
Title: Junichiro Yamada: Innovator in Electric Train Technology and Power Conversion
Introduction
Junichiro Yamada is a prominent inventor based in Mitaka, Japan. He has made significant contributions to the fields of power conversion and electric train technology, holding two patents to his name.
Latest Patents
His latest patents include a "Resonance Damping Apparatus for LC Filter of Power Converter" and a "Control Device for Electric Train." The resonance damping apparatus is designed to mitigate resonance in an LC type low-pass filter featured on the DC input side of power converters. It integrates an electric circuit connected in parallel with a reactor in the filter, which achieves minimal impedance at the resonance frequency, enhancing the reliability and efficiency of power converters. The control device for electric trains operates multiple coupled carriages that draw power from an overhead line. It incorporates power converters that adjust the overhead line power to suit the load within each carriage while including an auxiliary power supply that ensures consistent power delivery if levels dip below a set threshold.
Career Highlights
Junichiro Yamada has worked with Kabushiki Kaisha Toshiba, a well-known company specializing in high-tech electrical and electronic equipment. His innovative approaches have not only advanced technology but also reflected his commitment to enhancing the efficiency and safety of electrical systems in modern transportation.
Collaborations
During his time at Toshiba, Yamada has collaborated with esteemed colleagues such as Munetomo Nishimura and Akira Kato. These collaborations have undoubtedly expanded the scope of his innovations and have contributed to successful patent applications.
Conclusion
In summary, Junichiro Yamada stands out as an influential inventor whose work continues to impact the power conversion and electric train industries. With his innovative solutions and strategic collaborations, Yamada exemplifies the spirit of invention that drives technological progress.