Company Filing History:
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Years Active: 1979-1994
Title: Innovations of Shigeo Fushimi
Introduction
Shigeo Fushimi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electric power measurement, holding a total of six patents. His work has been influential in enhancing the accuracy and efficiency of watt-hour meters.
Latest Patents
One of Fushimi's latest patents involves a meter for accurately measuring integrated electric power. In this watt-hour meter, first and second input signals representing an analog electric current and an analog voltage of an alternating current are converted into first and second digital signals. A first adder produces a sum signal that represents a sum of the first input signal and an additional analog signal of a frequency different from that of the first input signal. This additional signal is substituted for the first input signal. The meter may also include a second adder that adds another additional analog signal to the second input signal. Alternatively, the meter comprises low-pass filters and oversample-and-convert circuits to produce the first and second input digital signals. Furthermore, the meter may include a first inverter for inverting a selected one of the first and second input signals into a first inverted signal. A first selector alternates between selecting one of the first inverted signal and the selected one of the first and second input signals at predetermined time intervals. A second inverter inverts a product signal representing a product of the first and second digital signals into a second inverted signal. Ganged with the first selector, a second selector alternates between selecting one of the second inverted signal and the product signal at predetermined time intervals.
Career Highlights
Fushimi has worked with prominent companies such as NEC Corporation and The Tokyo Electric Power Company, Incorporated. His experience in these organizations has contributed to his expertise in electric power technologies.
Collaborations
Some of his notable coworkers include Masatoshi Komatsu and Shigenori Wada. Their collaborations have likely played a role in advancing the innovations in which Fushimi has been involved.
Conclusion
Shigeo Fushimi's contributions to the field of electric power measurement through his patents and collaborations highlight his importance as an inventor. His work continues to influence the industry and improve the accuracy of power measurement technologies.