YI

Yasunori Iwafuji

HI Hitachi: 4 patents #8,942 of 28,497Top 35%
HC Hitachi Cable: 1 patents #530 of 1,086Top 50%
NT NTT: 1 patents #2,911 of 4,871Top 60%
OJ Opnext Japan: 1 patents #100 of 185Top 55%
Overall (All Time): #1,031,685 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7215886 Optical communication module Shigenobu Maruyama, Kazumi Kawamoto, Hiroaki Furuichi, Tooru Yoshida, Isamu Yoshida +6 more 2007-05-08
7164865 Optical fiber communication equipment and its applied optical systems Kimio Tatsuno, Tatemi Ido, Hideyuki Kuwano, Naohiko Baba 2007-01-16
5903697 Optical waveguide, method of making the same and integrated optical device Yasufumi Yamada, Masahiro Yanagisawa, Hiroaki Okano, Keiichi Higuchi, Hisato Uetsuka +2 more 1999-05-11
5162838 Facsimile apparatus and method for processing a fixed document Tatsuki Inuzuka, Keisuke Nakashima, Toru Takei, Yasuyuki Kojima, Kyoichi NOMURA +15 more 1992-11-10
4858096 Resonant converter for stabilized operation of switching devices Kenichi Onda, Yasuo Matsuda, Kojin Abe, Hiroyuki Aoyama, Hideo Yoshinaka 1989-08-15