KK

Koji Katayama

Sumitomo Electric Industries: 45 patents #198 of 21,551Top 1%
PA Panasonic: 31 patents #493 of 21,108Top 3%
TO Tosoh: 11 patents #36 of 1,042Top 4%
Mitsubishi Electric: 7 patents #4,301 of 25,717Top 20%
Canon: 6 patents #8,497 of 19,416Top 45%
NJ Nuvoton Technology Corporation Japan: 6 patents #10 of 222Top 5%
KC Kowa Company: 3 patents #157 of 562Top 30%
SO Sony: 2 patents #12,963 of 25,231Top 55%
NU National University Corporation Chiba University: 1 patents #100 of 320Top 35%
IC Itoki Crebio: 1 patents #7 of 22Top 35%
KD Kddi: 1 patents #215 of 396Top 55%
MK Mitsubishi Denki K.K.: 1 patents #164 of 577Top 30%
MD Mitsubisih Denki: 1 patents #26 of 381Top 7%
FI Fujimi Incorporated: 1 patents #125 of 216Top 60%
📍 Nara, JP: #10 of 2,795 inventorsTop 1%
Overall (All Time): #10,749 of 4,157,543Top 1%
115
Patents All Time

Issued Patents All Time

Showing 26–50 of 115 patents

Patent #TitleCo-InventorsDate
9105332 Variable resistance nonvolatile memory device Yuichiro Ikeda, Kazuhiko Shimakawa, Takumi Mikawa, Kiyotaka Tsuji 2015-08-11
9087582 Driving method of non-volatile memory element and non-volatile memory device Takeki Ninomiya, Takeshi Takagi, Zhiqiang Wei 2015-07-21
9082479 Nonvolatile memory element and nonvolatile memory device Zhiqiang Wei, Takeshi Takagi, Satoru Mitani, Shunsaku Muraoka 2015-07-14
8957399 Nonvolatile memory element and nonvolatile memory device Zhiqiang Wei, Takeshi Takagi 2015-02-17
8942025 Variable resistance nonvolatile memory element writing method Satoru Mitani, Takeshi Takagi 2015-01-27
8929416 Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser device Shimpei Takagi, Yusuke Yoshizumi, Masaki Ueno, Takatoshi Ikegami 2015-01-06
8917750 III-nitride semiconductor laser diode Masahiro Adachi, Shinji Tokuyama, Yohei Enya, Takashi Kyono, Yusuke Yoshizumi +4 more 2014-12-23
8908732 Group-III nitride semiconductor laser device Masaki Ueno, Takatoshi Ikegami, Takao Nakamura, Katsunori Yanashima, Hiroshi Nakajima 2014-12-09
8902629 Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device Ken Kawai, Kazuhiko Shimakawa, Shunsaku Muraoka 2014-12-02
8848421 Forming method of performing forming on variable resistance nonvolatile memory element, and variable resistance nonvolatile memory device Ken Kawai, Kazuhiko Shimakawa 2014-09-30
8830730 Variable resistance nonvolatile storage device and method of forming memory cell Shunsaku Muraoka, Yoshihiko Kanzawa, Satoru Mitani, Kazuhiko Shimakawa, Satoru Fujii +1 more 2014-09-09
8772064 Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser device Shimpei Takagi, Yusuke Yoshizumi, Masaki Ueno, Takatoshi Ikegami 2014-07-08
8741674 Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser device Yusuke Yoshizumi, Shimpei Takagi, Yohei Enya, Takashi Kyono, Masahiro Adachi +5 more 2014-06-03
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, Katsushi Akita +5 more 2014-04-08
8675393 Method for driving non-volatile memory element, and non-volatile memory device Takeshi Takagi, Mitsuteru Iijima 2014-03-18
8594145 Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser device Shimpei Takagi, Yusuke Yoshizumi, Masaki Ueno, Takatoshi Ikegami 2013-11-26
8581296 Compound semiconductor device Masahiro Adachi, Shinji Tokuyama 2013-11-12
8565004 Nonvolatile memory device and method for programming the same Mitsuteru Iijima, Takeshi Takagi 2013-10-22
8553446 Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor device incorporating nonvolatile memory element Satoru Mitani, Yoshihiko Kanzawa, Takeshi Takagi 2013-10-08
8553444 Variable resistance nonvolatile storage device and method of forming memory cell Shunsaku Muraoka, Yoshihiko Kanzawa, Satoru Mitani, Kazuhiko Shimakawa, Satoru Fujii +1 more 2013-10-08
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, Katsushi Akita +5 more 2013-10-01
8541253 III-nitride semiconductor laser device, and method of fabricating the III-nitride semiconductor laser device Yusuke Yoshizumi, Yohei Enya, Takashi Kyono, Masahiro Adachi, Shinji Tokuyama +4 more 2013-09-24
8524173 Microchannel structure and fine-particle production method using the same Maho Yamanaka, Akira Kawai, Hiroki Takamiya 2013-09-03
8508976 Nonvolatile memory element and nonvolatile memory device Takeshi Takagi 2013-08-13
8507305 Group-III nitride semiconductor laser device, method of fabricating group-III nitride semiconductor laser device, and epitaxial substrate Yusuke Yoshizumi, Yohei Enya, Takashi Kyono, Takamichi Sumitomo, Nobuhiro Saga +6 more 2013-08-13