TY

Tamotsu Yamamoto

Sumitomo Electric Industries: 36 patents #330 of 21,551Top 2%
PA Panasonic: 20 patents #998 of 21,108Top 5%
Fujitsu Limited: 18 patents #1,600 of 24,456Top 7%
OT Otics: 3 patents #22 of 78Top 30%
IK Ikegai Tekko Kabushiki Kaisha: 2 patents #1 of 8Top 15%
NC Nippon Zeon Co.: 1 patents #307 of 609Top 55%
FC Fuji Tekko Co.: 1 patents #7 of 15Top 50%
📍 Kawasaki, CA: #9 of 98 inventorsTop 10%
Overall (All Time): #22,236 of 4,157,543Top 1%
81
Patents All Time

Issued Patents All Time

Showing 26–50 of 81 patents

Patent #TitleCo-InventorsDate
7714562 Hysteretic switching regulator Richard Oswald, Takashi Ryu, Hirohisa Tanabe, Masaaki Koto 2010-05-11
7683719 Internal frequency compensation circuit for integrated circuit controllers Richard Oswald, Takashi Ryu 2010-03-23
7623652 Electronic device, input device, and portable electronic device using the same Akitoshi Mori, Katsumasa Yamaguchi, Toshiaki Saitoh, Teruyuki Kimata, Shunichi Yonekubo 2009-11-24
7621242 Variable valve operating mechanism Katsutoshi Kitagawa, Akira Sugiura, Tomiyasu Hirano, Tetsuya Niwa 2009-11-24
7619358 Dispersion-type EL device and illuminated switch unit using the same Masaki Sawada, Koji Tanabe 2009-11-17
7465896 Electronic device Masaki Sawada, Hiroto Inoue 2008-12-16
7463312 Remote controller and transmitter-receiver using the same Norifumi Sata 2008-12-09
7451729 Variable valve mechanism Akira Sugiura, Tetsuya Niwa, Katsutoshi Kitagawa, Tomiyasu Hirano, Tomoki Miyoshi 2008-11-18
7439461 Neutral position returning mechanism and input device using the same Masaki Sawada 2008-10-21
7416985 Semiconductor device having a multilayer interconnection structure and fabrication method thereof Hirofumi Watani, Hideki Kitada, Hiroshi Horiuchi, Motoshu Miyajima 2008-08-26
7390741 Method for fabricating semiconductor device Yukio Takigawa, Yoshiyuki Okura, Takahiro Kono, Tsutomu Hosoda 2008-06-24
7338905 Semiconductor device manufacture method Tetsuya Shirasu, Toshiyuki Karasawa, Nobuhiro Misawa, Kenji Nakano 2008-03-04
7323959 Trackball device Yoshio Naka 2008-01-29
7295187 Electronic apparatus Keiji Kaizaki 2007-11-13
7292015 High efficiency, high slew rate switching regulator/amplifier Richard Oswald, Takuya Ishi 2007-11-06
7282900 Performance controller for a step down current mode switching regulator Richard Oswald, Takashi Ryu, Mikio Motomori, Takuya Ishii 2007-10-16
7282894 Method and apparatus for performing lossless sensing and negative inductor currents in a high side switch Richard Oswald, Takashi Ryu 2007-10-16
7274354 Portable electronic apparatus Kenichi Kagami, Toyoshi Fukumura 2007-09-25
7250746 Current mode switching regulator with predetermined on time Richard Oswald, Hiroshi Saito, Takuya Ishii, Takashi Ryu, Hiroki Akashi +1 more 2007-07-31
7199636 Active diode Richard Oswald, Takashi Ryu, Hideki Shirokoshi 2007-04-03
7176668 Switching regulator with advanced slope compensation Richard Oswald 2007-02-13
7161583 Input device and method for detecting contact position Hiroyasu Okada, Hiroto Inoue, Masaki Sawada 2007-01-09
7158119 Track ball device and electronic apparatus using the same Shigeru Yokoji, Masaki Nakase, Toyoshi Fukumura 2007-01-02
7132957 Remote control transmitter and transmitting and receiving device using the same Norifumi Sata, Noriaki Matsui, Takaya Nakamura 2006-11-07
7126318 Higher order slope compensation for fixed frequency current mode switching regulators Richard Oswald, Mikio Motomori 2006-10-24