AK

Asako Koyanagi

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
HC Hitachi Building Systems Co.: 1 patents #12 of 53Top 25%
Overall (All Time): #3,565,614 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6490187 Semiconductor electric power conversion device Kazuhisa Mori, Satoshi Fukuda, Toshisuke Mine, Takao Kishikawa, Tomoharu Sakoda 2002-12-03