AK

Akihisa Kawamura

Sumitomo Electric Industries: 48 patents #173 of 21,551Top 1%
PA Panasonic: 18 patents #1,184 of 21,108Top 6%
SO Sony: 6 patents #6,793 of 25,231Top 30%
MC Matushita Electric Industrial Co.: 2 patents #1 of 106Top 1%
YA Yazaki: 1 patents #2,077 of 3,427Top 65%
Overall (All Time): #29,304 of 4,157,543Top 1%
70
Patents All Time

Issued Patents All Time

Showing 26–50 of 70 patents

Patent #TitleCo-InventorsDate
7069224 Receiver for receiving audio data and audio-related information Naoki Ejima, Masatoshi Shimbo 2006-06-27
7069223 Compressed code decoding device and audio decoding device Masaharu Matsumoto, Takashi Katayama, Masahiro Sueyoshi, Shuji Miyasaka, Takeshi Fujita +3 more 2006-06-27
7050870 Reproduction apparatus and music delivery system Masahiro Sueyoshi, Masaharu Matsumoto, Takeshi Fujita, Takashi Katayama, Kazutaka Abe +1 more 2006-05-23
6938209 Audio information provision system Michiko Ogawa, Ryosuke Kobayashi, Toshihiko Date 2005-08-30
6931371 Digital interface device Masahiro Sueyoshi, Takeshi Fujita, Kazutaka Abe, Kosuke Nishio, Takashi Katayama +1 more 2005-08-16
6904089 Encoding device and decoding device Masahiro Sueyoshi, Masaharu Matsumoto, Kazutaka Abe, Kousuke Nishio, Takashi Katayama +2 more 2005-06-07
6847687 Audio and video processing apparatus Takeshi Fujita, Takashi Katayama, Masahiro Sueyoshi, Kousuke Nishio, Masaharu Matsumoto +4 more 2005-01-25
6823310 Audio signal processing device and audio signal high-rate reproduction method used for audio visual equipment Tsukuru Ishito, Masaharu Matsumoto, Shuji Miyasaka, Takeshi Fujita, Takashi Katayama +4 more 2004-11-23
6760286 Method of transmitting data among a plurality of LSIs, and recording medium reproducing apparatus using the method Masatoshi Shimbo, Yoshihiro Mori 2004-07-06
6751177 Signal processor Kazutaka Abe, Masaharu Matsumoto, Masatoshi Shimbo, Naoki Ejima 2004-06-15
6631352 Decoding circuit and reproduction apparatus which mutes audio after header parameter changes Takeshi Fujita, Takashi Katayama, Masahiro Sueyoshi, Shuji Miyasaka, Masaharu Matsumoto +2 more 2003-10-07
6584443 Apparatus and method for audio data/audio-related information transfer Naoki Ejima, Masatoshi Shimbo 2003-06-24
6546105 Sound image localization device and sound image localization method Takashi Katayama, Masaharu Matsumoto, Masahiro Sueyoshi, Shuji Miyasaka, Takeshi Fujita +2 more 2003-04-08
6473374 Method of transmitting data among a plurality of LSIs, and DVD-audio reproducing apparatus using the method Masatoshi Shimbo, Yoshihiro Mori 2002-10-29
6460016 Audio decoding device for decoding coded audio information with multiple channels Masahiro Sueyoshi, Shuji Miyasaka, Tukuru Ishito, Takeshi Fujita, Takashi Katayama +3 more 2002-10-01
6377641 Reproduction apparatus and reproduction method Takashi Katayama, Takeshi Fujita, Masahiro Sueyoshi, Kazutaka Abe, Masaharu Matsumoto +3 more 2002-04-23
6363407 Exponential calculation device and decoding device Shuji Miyasaka, Takeshi Fujita, Masahiro Sueyoshi, Masaharu Matsumoto, Takashi Katayama +2 more 2002-03-26
6356639 AUDIO DECODING APPARATUS, SIGNAL PROCESSING DEVICE, SOUND IMAGE LOCALIZATION DEVICE, SOUND IMAGE CONTROL METHOD, AUDIO SIGNAL PROCESSING DEVICE, AND AUDIO SIGNAL HIGH-RATE REPRODUCTION METHOD USED FOR AUDIO VISUAL EQUIPMENT Tsukuru Ishito, Masaharu Matsumoto, Shuji Miyasaka, Takeshi Fujita, Takashi Katayama +4 more 2002-03-12
6304890 Exponential calculation device and decoding device Shuji Miyasaka, Takeshi Fujita, Masahiro Sueyoshi, Masaharu Matsumoto, Takashi Katayama +2 more 2001-10-16
6297754 Decoding device Shuji Miyasaka, Takeshi Fujita, Masahiro Sueyoshi, Masaharu Matsumoto, Takashi Katayama +2 more 2001-10-02
6295319 Decoding device Masahiro Sueyoshi, Masaharu Matsumoto, Shuji Miyasaka, Takeshi Fujita, Takashi Katayama +5 more 2001-09-25
6262965 Optical disk Masatoshi Shimbo, Ryoji Suzuki, Yoshihiro Mori 2001-07-17
6233562 Audio decoding device and signal processing device for decoding multi-channel signals with reduced memory requirements Masahiro Sueyoshi, Shuji Miyasaka, Tukuru Ishito, Takeshi Fujita, Takashi Katayama +3 more 2001-05-15
6118821 Compressed code decoding device and audio decoding device Masaharu Matsumoto, Takashi Katayama, Masahiro Sueyoshi, Shuji Miyasaka, Takeshi Fujita +3 more 2000-09-12
5813874 Relay apparatus for relatively rotatable members Hidehiro Ichikawa, Hiraku Tanaka 1998-09-29