YK

Yoshihiro Koizumi

SE Seiko Epson: 59 patents #133 of 7,774Top 2%
KT Kabushiki Kaisha Toshiba: 2 patents #9,982 of 21,451Top 50%
TC Toppan Printing Co.: 2 patents #414 of 1,467Top 30%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #36,322 of 4,157,543Top 1%
62
Patents All Time

Issued Patents All Time

Showing 51–62 of 62 patents

Patent #TitleCo-InventorsDate
7997699 Liquid ejecting apparatus 2011-08-16
7934794 Ink cartridge Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata +3 more 2011-05-03
7934822 Ink cartridge Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata +3 more 2011-05-03
7614729 Liquid jetting device 2009-11-10
7614732 Ink cartridge Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata +3 more 2009-11-10
7325915 Ink cartridge having retaining structure Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata +3 more 2008-02-05
7237882 Ink cartridge having retaining structure and recording apparatus for receiving the ink cartridge Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata +3 more 2007-07-03
6955422 Ink cartridge Hisashi Miyazawa, Munehide Kanaya, Yasuto Sakai, Masaki Shimomura, Satoshi Nakata +1 more 2005-10-18
6863388 Ink cartridge and ink jet recording head adaptable for the same Takeo Seino 2005-03-08
6598224 Data management unit, computer system and computer-readable storage medium Takeshi Maeda, Yutaka Sakai, Tatsuji Tanaka, Katsuhiko Sekiguchi 2003-07-22
6571153 Electric power system protective control system, method of controlling electric power system protective control system and storage medium storing program module Takeshi Maeda, Tatsuji Tanaka, Katsuhiko Sekiguchi 2003-05-27
6457818 Ink jet type recording head Norihiko Kurashima 2002-10-01