Company Filing History:
3 out of 42,517 
1 out of 496 Years Active: 1985-2014
Title: Keiji Fukushi: Innovator in Electrical Engineering
Introduction
Keiji Fukushi is a notable inventor based in Hitachi, Japan, recognized for his contributions to electrical engineering. With a total of four patents to his name, Fukushi has made significant advancements in the field, particularly in the detection of partial discharge in motors and the production of superconducting magnet coils.
Latest Patents
Fukushi's latest patents include an "Apparatus and method for detecting partial discharge at turn-to-turn insulation in motor." This invention features a surge generator that applies a pulse voltage to the motor windings, allowing for the detection of partial discharge currents between winding turns. The surge generator is designed to replicate the surge voltage observed at the motor terminal when driven by an inverter, operating at frequencies ranging from 50 Hz to 20 kHz. Another significant patent is the "Method for producing a superconducting magnet coil," which involves winding a superconducting wire into a coil and impregnating it with a low-viscosity curable resin composition. This process ensures the coil is effectively cured, enhancing its performance.
Career Highlights
Throughout his career, Fukushi has worked with prominent companies such as Hitachi, Ltd. and Hitachi Industrial Equipment Systems Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in electrical engineering.
Collaborations
Fukushi has collaborated with notable coworkers, including Toru Koyama and Koo Honjo. Their combined expertise has likely fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.
Conclusion
Keiji Fukushi's work in electrical engineering, particularly in the areas of partial discharge detection and superconducting magnet coils, showcases his innovative spirit and dedication to advancing technology. His contributions continue to impact the field significantly.