KU

Keiji Usuba

HI Hitachi: 1 patents #1,745 of 4,225Top 45%
Overall (2003): #179,078 of 273,478Top 70%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6614754 Bi-directional line switched ring network system Masatoshi Takahashi, Mitsunobu Kimura, Seigo OBAYASHI, Takashi Mori 2003-09-02