YT

Yoshiaki Tsubomatsu

HC Hitachi Chemical Company: 12 patents #116 of 1,946Top 6%
Sharp Kabushiki Kaisha: 2 patents #5,184 of 10,731Top 50%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
📍 Chikusei, JP: #15 of 185 inventorsTop 9%
Overall (All Time): #351,617 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
8997341 Substrate for mounting semiconductor chip and method for producing same Yoshinori Ejiri, Kiyoshi Hasegawa, Takehisa Sakurai 2015-04-07
7187072 Fabrication process of semiconductor package and semiconductor package Naoki Fukutomi, Fumio Inoue, Toshio Yamazaki, Hirohito Ohhata, Shinsuke Hagiwara +2 more 2007-03-06
6746897 Fabrication process of semiconductor package and semiconductor package Naoki Fukutomi, Fumio Inoue, Toshio Yamazaki, Hirohito Ohhata, Shinsuke Hagiwara +2 more 2004-06-08
6568073 Process for the fabrication of wiring board for electrical tests Naoki Fukutomi, Hidehiro Nakamura, Hajime Nakayama, Masanori Nakamura, Kouichi Kaitou +3 more 2003-05-27
6365432 Fabrication process of semiconductor package and semiconductor package Naoki Fukutomi, Fumio Inoue, Toshio Yamazaki, Hirohito Ohhata, Shinsuke Hagiwara +2 more 2002-04-02
6236108 Substrate for holding a chip of semi-conductor package, semi-conductor package, and fabrication process of semi-conductor package Yoshiki Sota, Koji Miyata, Toshio Yamazaki, Fumio Inoue, Hidehiro Nakamura +4 more 2001-05-22
6223429 Method of production of semiconductor device Aizou Kaneda, Masaaki Yasuda, Itsuo Watanabe, Tomohisa Ohta, Fumio Inoue +9 more 2001-05-01
6133534 Wiring board for electrical tests with bumps having polymeric coating Naoki Fukutomi, Hidehiro Nakamura, Hajime Nakayama, Masanori Nakamura, Kouichi Kaitou +3 more 2000-10-17
6064111 Substrate for holding a chip of semi-conductor package, semi-conductor package, and fabrication process of semi-conductor package Yoshiki Sota, Koji Miyata, Toshio Yamazaki, Fumio Inoue, Hidehiro Nakamura +4 more 2000-05-16
5976912 Fabrication process of semiconductor package and semiconductor package Naoki Fukutomi, Fumio Inoue, Toshio Yamazaki, Hirohito Ohhata, Shinsuke Hagiwara +2 more 1999-11-02
5664325 Fabrication process of wiring board Naoki Fukutomi, Hajime Nakayama, Kouichi Kaitou, Yasunobu Yoshidomi, Yoshihiro Takahashi 1997-09-09
5504992 Fabrication process of wiring board Naoki Fukutomi, Toshio Yamazaki, Masahiko Itabashi, Hirohito Ohhata 1996-04-09
5426850 Fabrication process of wiring board Naoki Fukutomi, Hajime Nakayama, Kouichi Kaitou, Yasunobu Yoshidomi, Yoshihiro Takahashi 1995-06-27
4830691 Process for producing high-density wiring board Akinari Kida, Naoki Fukutomi, Takuya Yasuoka 1989-05-16