KT

Keizo Takemasa

QL Qd Laser: 4 patents #5 of 30Top 20%
MT Mirise Technologies: 3 patents #19 of 133Top 15%
TO Toyota: 3 patents #8,352 of 26,838Top 35%
DE Denso: 3 patents #3,857 of 11,792Top 35%
OC Oki Electric Industry Co.: 1 patents #1,459 of 2,807Top 55%
LC Lapis Semiconductor Co.: 1 patents #173 of 349Top 50%
TS The University Of Sheffield: 1 patents #43 of 262Top 20%
Overall (All Time): #785,456 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12360405 Optical semiconductor device Yuki Kamata, Hiroyuki Tarumi, Koichi Oyama, Kenichi Nishi, Yutaka Ohnishi 2025-07-15
12149053 Semiconductor device Hitoshi Yamada, Yuki Kamata, Koichi Oyama, Yutaka Ohnishi, Kenichi Nishi 2024-11-19
11764546 Semiconductor laser device Yuki Kamata, Hiroyuki Tarumi, Koichi Oyama, Kenichi Nishi, Yutaka Onishi 2023-09-19
9865771 Semiconductor light-emitting element Kenichi Nishi, Takeo Kageyama, Mitsuru Sugawara, Richard Hogg, Siming W. Chen 2018-01-09
8277131 Semiconductor optical communication module and manufacturing method thereof Munechika Kubota, Koji Yamada, Tomonori Shimamura, Satoshi Sasaki, Xiang Yu +2 more 2012-10-02
6387746 Method of fabricating semiconductor laser diode Yukio Katoh, Hiroshi Wada 2002-05-14