YI

Yukio Ishigaki

HI Hitachi: 8 patents #5,191 of 28,497Top 20%
AD Advantest: 3 patents #330 of 1,193Top 30%
CI Chubu Electric Power Company, Incorporated: 1 patents #104 of 314Top 35%
HC Hitachi Engineering & Services Co.: 1 patents #59 of 129Top 50%
Overall (All Time): #471,178 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
6828799 Propagation delay time measuring method and testing apparatus Koichi Higashide 2004-12-07
6688106 Waste processing system and fuel reformer used in the waste processing system Tsutomu Okusawa, Kazuhito Koyama, Masahiko Yamagishi, Shigeo Hatamiya, Taiko Ajiro +2 more 2004-02-10
6442938 Waste processing system and fuel reformer used in the waste processing system Tsutomu Okusawa, Kazuhito Koyama, Masahiko Yamagishi, Shigeo Hatamiya, Taiko Ajiro +2 more 2002-09-03
6417682 Semiconductor device testing apparatus and its calibration method Toshikazu Suzuki, Hiroyuki Nagai, Noriyoshi Kozuka, Shigeru Matsumura, Takashi Sekizuka +3 more 2002-07-09
6369601 Method of measuring a propagation delay time through a transmission path in a semiconductor integrated circuit testing apparatus and semiconductor integrated circuit testing apparatus using the same 2002-04-09
6282902 Waste processing system and fuel reformer used in the waste processing system Tsutomu Okusawa, Kazuhito Koyama, Masahiko Yamagishi, Shigeo Hatamiya, Taiko Ajiro +2 more 2001-09-04
6058856 Waste processing system and fuel reformer used in the waste processing system Tsutomu Okusawa, Kazuhito Koyama, Masahiko Yamagishi, Shigeo Hatamiya, Taiko Ajiro +2 more 2000-05-09
6014863 Waste processing system and fuel reformer used in the waste processing system Tsutomu Okusawa, Kazuhito Koyama, Masahiko Yamagishi, Shigeo Hatamiya, Taiko Ajiro +1 more 2000-01-18
5532638 Superconducting energy storage apparatus Morihiro Kubo, Takeshi Itoh, Hirokazu Misawa 1996-07-02
5218505 Superconductor coil system and method of operating the same Morihiro Kubo 1993-06-08
4920095 Superconducting energy storage device Tadasi Sonobe 1990-04-24