KT

Keiji Takaoka

KT Kabushiki Kaisha Toshiba: 16 patents #1,863 of 21,451Top 9%
Overall (All Time): #301,298 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDate
7589282 Wiring board and a semiconductor device using the same Hiroshi Yamada, Hideto Furuyama 2009-09-15
7463491 Wiring board and a semiconductor device using the same Hiroshi Yamada, Hideto Furuyama 2008-12-09
7427804 Optoelectronic semiconductor device and light signal input/output device Hiroshi Yamada 2008-09-23
7276735 Laminated semiconductor substrate and optical semiconductor element Mitsuhiro Kushibe, Yasuo Ohba, Rei Hashimoto 2007-10-02
7244629 Vertical cavity surface emitting laser diode and method for manufacturing the same Mizunori Ezaki, Michihiko Nishigaki 2007-07-17
7230278 Optoelectronic semiconductor device and light signal input/output device Hiroshi Yamada 2007-06-12
7068696 Vertical-cavity surface emitting laser diode and its manufacturing method Mizunori Ezaki, Michihiko Nishigaki 2006-06-27
6881984 Resonant-cavity light-emitting diode and optical transmission module using the light-emitting diode 2005-04-19
6768137 Laminated semiconductor substrate and optical semiconductor element Mitsuhiro Kushibe, Yasuo Ohba, Rei Hashimoto 2004-07-27
6678307 Semiconductor surface light-emitting device Mizunori Ezaki 2004-01-13
6661031 Resonant-cavity light-emitting diode and optical transmission module using the light-emitting diode 2003-12-09
6653660 Vertical cavity-type semiconductor light-emitting device and optical module using vertical cavity-type semiconductor light-emitting device 2003-11-25
5970081 Grating coupled surface emitting device Yuzo Hirayama, Masahisa Funemizu, Masaki Tohyama, Motoyasu Morinaga, Kazuhiro Inoue +1 more 1999-10-19
5822349 Semiconductor device and method of manufacturing the same Mitsuhiro Kushibe, Toshihide Izumiya, Yoshihiro Kokubun 1998-10-13
5434426 Optical interconnection device Hideto Furuyama, Hiroshi Hamasaki, Mitsuhiro Kushibe, Katsuji Kaminishi, Tamon Kobayashi 1995-07-18
5001335 Semiconductor photodetector device and method of manufacturing the same Tetsuo Sadamasa, Motoyasu Morinaga, Nobuo Suzuki, Kenji Matsumoto 1991-03-19