KY

Keiichi Yamaguchi

SE Seiko Epson: 40 patents #305 of 7,774Top 4%
KT Kabushiki Kaisha Toshiba: 39 patents #530 of 21,451Top 3%
SC Sanyo Electric Co.: 5 patents #1,180 of 6,347Top 20%
TS Toshiba Infrastructure Systems & Solutions: 4 patents #32 of 424Top 8%
SY Sysmex: 3 patents #244 of 868Top 30%
KC Kanto Sanyo Semiconductor Co.: 2 patents #16 of 51Top 35%
Sharp Kabushiki Kaisha: 1 patents #6,861 of 10,731Top 65%
SC Softard Industries Co.: 1 patents #7 of 23Top 35%
TL Tokyo Electron Limited: 1 patents #3,538 of 5,567Top 65%
NE Nec: 1 patents #7,889 of 14,502Top 55%
GH Gree Holdings: 1 patents #171 of 205Top 85%
IC International Superconductivity Technology Center: 1 patents #110 of 245Top 45%
📍 Ota, JP: #8 of 330 inventorsTop 3%
Overall (All Time): #16,971 of 4,157,543Top 1%
92
Patents All Time

Issued Patents All Time

Showing 76–92 of 92 patents

Patent #TitleCo-InventorsDate
7221920 Voltage controlled oscillator, frequency synthesizer and communication apparatus Kazuhide Abe, Mayumi Morizuka, Ryoichi Ohara, Kenya Sano, Naoko Yanase +9 more 2007-05-22
7207221 Vibration type gyroscope and method for manufacturing vibration type gyroscope Osamu Kawauchi, Shigeki Miyazawa, Katsumi Takayama 2007-04-24
7138862 Power amplifier and radio communication device using the amplifier Yuta Araki, Hiroyuki Kayano 2006-11-21
7095276 Power amplifier and radio communication device using the amplifier Yuta Araki, Hiroyuki Kayano 2006-08-22
7091776 Power amplifier and radio communication device using the amplifier Yuta Araki, Hiroyuki Kayano 2006-08-15
7046084 Power amplifier and radio communication device using the amplifier Yuta Araki, Hiroyuki Kayano 2006-05-16
7046085 Power amplifier and radio communication device using the amplifier Yuta Araki, Hiroyuki Kayano 2006-05-16
7046974 Radio frequency circuit and communication system with power amplifier control 2006-05-16
7034631 Symmetric microwave filter and microwave integrated circuit merging the same Naoko Ono 2006-04-25
6934557 Portable type radio equipment Shu-ichi Sekine, Takayoshi Itoh, Yuji Iseki, Naoko Ono, Hiroyuki Kayano +4 more 2005-08-23
6927625 High frequency circuit using high output amplifier cell block and low output amplifier cell block 2005-08-09
6876270 Symmetric microwave filter and microwave integrated circuit merging the same Naoko Ono 2005-04-05
6804500 High frequency circuit using high output amplifier cell block and low output amplifier cell block 2004-10-12
6455880 Microwave semiconductor device having coplanar waveguide and micro-strip line Naoko Ono, Yuji Iseki, Junko Onomura, Eiji Takagi 2002-09-24
6263193 Microwave transmitter/receiver module Yuji Iseki, Mitsuo Konno 2001-07-17
5790078 Superconducting mixer antenna array Katsumi Suzuki, Youichi Enomoto, Shoji Tanaka, Arthur T. Murphy 1998-08-04
5498881 Superconducting device having a single junction structure appropriate for integration Manabu Fujimoto, Youichi Enomoto, Tsutomu Mitsuzuka, Katsumi Suzuki 1996-03-12