KA

Katsushi Akita

Sumitomo Electric Industries: 90 patents #33 of 21,551Top 1%
RI Riken: 6 patents #103 of 1,824Top 6%
KC Koha Co.: 3 patents #16 of 58Top 30%
📍 Itami, JP: #9 of 1,436 inventorsTop 1%
Overall (All Time): #18,040 of 4,157,543Top 1%
90
Patents All Time

Issued Patents All Time

Showing 26–50 of 90 patents

Patent #TitleCo-InventorsDate
8693515 Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser device Yusuke Yoshizumi, Yohei Enya, Takashi Kyono, Masahiro Adachi, Masaki Ueno +5 more 2014-04-08
8679955 Method for forming epitaxial wafer and method for fabricating semiconductor device Shin Hashimoto, Kensaku Motoki, Hideaki Nakahata, Shinsuke Fujiwara 2014-03-25
8653561 III-nitride semiconductor electronic device, and method of fabricating III-nitride semiconductor electronic device Shin Hashimoto, Yoshiyuki Yamamoto, Masaaki Kuzuhara, Norimasa Yafune 2014-02-18
8642943 Semiconductor wafer, light-receiving element, light-receiving element array, hybrid-type detection device, optical sensor device, and process for production of semiconductor wafer Hiroki Mori, Yasuhiro Iguchi, Hiroshi Inada, Youichi Nagai, Kouhei Miura +3 more 2014-02-04
8633514 Group III nitride semiconductor wafer and group III nitride semiconductor device Shin Hashimoto, Tatsuya Tanabe, Hideaki Nakahata, Hiroshi Amano 2014-01-21
8619828 Group III nitride semiconductor laser diode Yohei Enya, Takashi Kyono, Masahiro Adachi, Shinji Tokuyama, Yusuke Yoshizumi +2 more 2013-12-31
8592289 Epitaxial wafer, method for manufacturing gallium nitride semiconductor device, gallium nitride semiconductor device and gallium oxide wafer Shin Hashimoto, Shinsuke Fujiwara, Hideaki Nakahata, Kensaku Motoki 2013-11-26
8548021 III-nitride semiconductor laser, and method for fabricating III-nitride semiconductor laser Kei Fujii, Masaki Ueno, Takashi Kyono, Yusuke Yoshizumi, Takamichi Sumitomo +1 more 2013-10-01
8546163 Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser device Yusuke Yoshizumi, Yohei Enya, Takashi Kyono, Masahiro Adachi, Masaki Ueno +5 more 2013-10-01
8513684 Nitride semiconductor light emitting device Takashi Kyono, Yohei Enya, Yusuke Yoshizumi, Masaki Ueno, Takamichi Sumitomo 2013-08-20
8487327 Group-III nitride semiconductor device, epitaxial substrate, and method of fabricating group-III nitride semiconductor device Yohei Enya, Yusuke Yoshizumi, Takashi Kyono, Takamichi Sumitomo, Masaki Ueno +1 more 2013-07-16
8483251 Group III nitride semiconductor laser diode, and method for producing group III nitride semiconductor laser diode Yohei Enya, Yusuke Yoshizumi, Takashi Kyono, Masaki Ueno, Takamichi Sumitomo +1 more 2013-07-09
8476615 GaN-based semiconductor light emitting device and the method for making the same Yohei Enya, Takashi Kyono, Takamichi Sumitomo, Masaki Ueno, Takao Nakamura 2013-07-02
8461570 Semiconductor device and manufacturing method thereof Kei Fujii, Takashi Ishizuka, Youichi Nagai, Tatsuya Tanabe 2013-06-11
8420426 Method of manufacturing a light-emitting device Hideki Hirayama, Takao Nakamura 2013-04-16
8415180 Method for fabricating wafer product and method for fabricating gallium nitride based semiconductor optical device Shin Hashimoto, Kensaku Motoki, Shinsuke Fujiwara, Hideaki Nakahata 2013-04-09
8405066 Nitride-based semiconductor light-emitting device Takashi Kyono, Yohei Enya, Yusuke Yoshizumi, Takamichi Sumitomo, Masaki Ueno 2013-03-26
8357558 Method of making semiconductor light-emitting device Takashi Kyono, Yohei Enya, Yusuke Yoshizumi, Masaki Ueno, Takamichi Sumitomo +2 more 2013-01-22
8357946 Nitride semiconductor light emitting device, epitaxial substrate, and method for fabricating nitride semiconductor light emitting device Takashi Kyono, Yusuke Yoshizumi, Yohei Enya, Masaki Ueno, Takamichi Sumitomo 2013-01-22
8309380 Photodiode array, method for manufacturing photodiode array, epitaxial wafer, and method for manufacturing epitaxial wafer Takashi Ishizuka, Kei Fujii, Youichi Nagai, Hideaki Nakahata 2012-11-13
8306082 Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser device Yusuke Yoshizumi, Yohei Enya, Takashi Kyono, Masahiro Adachi, Masaki Ueno +5 more 2012-11-06
8304269 Method of fabricating group III nitride semiconductor device Takashi Kyono, Yusuke Yoshizumi, Yohei Enya, Masaki Ueno, Takamichi Sumitomo +1 more 2012-11-06
8304793 III-nitride semiconductor optical device and epitaxial substrate Yusuke Yoshizumi, Yohei Enya, Masaki Ueno, Takashi Kyono, Takao Nakamura 2012-11-06
8284811 Gallium nitride-based semiconductor laser diode Takamichi Sumitomo, Yohei Enya, Yusuke Yoshizumi, Masaki Ueno, Takashi Kyono 2012-10-09
8227277 Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser device Yusuke Yoshizumi, Yohei Enya, Takashi Kyono, Masahiro Adachi, Masaki Ueno +5 more 2012-07-24