YK

Yoshio Koguchi

HI Hitachi: 5 patents #7,555 of 28,497Top 30%
Overall (All Time): #1,039,890 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6753494 Sintered body and electrode, method for surface densitication of these, process for manufacturing electrode by this method and circuit breaker Yohei Asakawa, Hideaki Onozuka, Motohiro Kikuchi, Masato Kobayashi, Masaya Takahashi +1 more 2004-06-22
6048216 Vacuum circuit breaker as well as vacuum valve and electric contact used in same Katsuhiro Komuro, Yoshitaka Kojima, Yukio Kurosawa, Toru Tanimizu, Yoshimi Hakamata +1 more 2000-04-11
5852266 Vacuum circuit breaker as well as vacuum valve and electric contact used in same Katsuhiro Komuro, Yoshitaka Kojima, Yukio Kurosawa, Toru Tanimizu, Yoshimi Hakamata +1 more 1998-12-22
5697150 Method forming an electric contact in a vacuum circuit breaker Katsuhiro Komuro, Yoshitaka Kojima, Yukio Kurosawa, Toru Tanimizu, Yoshimi Hakamata +1 more 1997-12-16
5557083 Vacuum circuit breaker and electric contact Katsuhiro Komuro, Yoshitaka Kojima, Yukio Kurosawa, Toru Tanimizu, Yoshimi Hakamata +1 more 1996-09-17