SI

Shigeru Izumi

HI Hitachi: 28 patents #1,022 of 28,497Top 4%
CI Chubu Electric Power Company, Incorporated: 1 patents #104 of 314Top 35%
CC Chugoku Electric Power Co.: 1 patents #53 of 143Top 40%
TI Tokyo Electric Power Company Holdings, Incorporated: 1 patents #245 of 711Top 35%
TC Tokyo Gas Co.: 1 patents #144 of 412Top 35%
Overall (All Time): #140,035 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
4586378 Unknown sound evaluating method and apparatus Yoshihiro Michiguchi, Makoto Senoh 1986-05-06
4377947 Device for identifying rubbing locations in rotating machines Osami Matsushita, Motohiro Satoh, Susumu Hioki, Katsuaki Kikuchi 1983-03-29
4352167 Method of locating sound generation within enclosure Yuuji Hashimoto, Izumi Kobayashi, Mitsuo Suzuki, Kimio Yamada, Yoshihiro Michiguchi 1982-09-28