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 1–25 of 70 patents

Patent #TitleCo-InventorsDate
12156004 Loudspeaker device Nobuhiko WASHIO, Atsushi Sakaguchi, Isao Kakuhari 2024-11-26
11994605 Direction of arrival estimation device, system, and direction of arrival estimation method Rohith Mars, Srikanth Nagisetty, Chong Soon Lim, Hiroyuki Ehara 2024-05-28
11488573 Acoustic object extraction device and acoustic object extraction method Rohith Mars, Srikanth Nagisetty, Chong Soon Lim, Hiroyuki Ehara 2022-11-01
10777209 Coding apparatus and coding method Hiroyuki Ehara, Kai Wu, Srikanth Nagisetty, Sua Hong Neo 2020-09-15
10491984 Speaker device Kazuki Honda, Takafumi Yuasa, Toshiyuki Matsumura, Shuji Saiki, Satoshi Takayama +3 more 2019-11-26
10462553 Speaker device Toshiyuki Matsumura, Shuji Saiki 2019-10-29
9820047 Signal processing method and speaker system Toshiyuki Matsumura, Isao Kakuhari, Shuji Saiki, Satoshi Takayama, Kazuki Honda +1 more 2017-11-14
9774935 Speaker device Toshiyuki Matsumura, Kazuki Honda, Takafumi Yuasa, Shuji Saiki, Satoshi Takayama 2017-09-26
8284961 Signal processing device Shuji Miyasaka, Yosiaki Takagi, Takeshi Norimatsu, Kojiro Ono 2012-10-09
8184817 Multi-channel acoustic signal processing device Yoshiaki Takagi, Kok Seng Chong, Takeshi Norimatsu, Shuji Miyasaka, Kojiro Ono 2012-05-22
8160890 Audio signal coding method and decoding method Mineo Tsushima 2012-04-17
8081764 Audio decoder Yosiaki Takagi, Kok Seng Chong, Takeshi Norimatsu, Shuji Miyasaka, Kojiro Ono 2011-12-20
8073703 Acoustic signal processing apparatus and acoustic signal processing method Shuji Miyasaka, Yoshiaki Takagi, Takeshi Norimatsu, Kojiro Ono, Kok Seng Chong 2011-12-06
8019614 Energy shaping apparatus and energy shaping method Yoshiaki Takagi, Kok Seng Chong, Takeshi Norimatsu, Shuji Miyasaka, Kojiro Ono +1 more 2011-09-13
7917237 Receiving apparatus, sending apparatus and transmission system Naoki Esima 2011-03-29
7844355 Stream reproduction device and stream supply device Hiroshi Yahata, Tomoyuki Okada 2010-11-30
7714934 Transmission method, transmission system, sending device and reception device Naoki Ejima, Toshiroh Nishio, Hidekazu Suzuki, Sho Murakoshi, Tetsuya Hiroe +1 more 2010-05-11
7509179 Distribution system Masaharu Matsumoto, Takashi Katayama, Masahiro Sueyoshi, Kousuke Nishio, Kakeshi Fujita +1 more 2009-03-24
7394499 Data transmitting method, data receiving method, data transmitting device, and data receiving device Hiroshige Okamoto, Tetsuya Hiroe, Sho Murakoshi, Naoki Ejima, Toshiroh Nishio +1 more 2008-07-01
7236838 Signal processing apparatus, signal processing method, program and recording medium Takashi Katayama, Masaharu Matsumoto, Masahiro Sueyoshi, Kosuke Nishio, Takeshi Fujita +1 more 2007-06-26
7230650 Data transmission method, data receiving method, video data transmission apparatus and video data receiving apparatus Hiroshige Okamoto, Tetsuya Hiroe, Sho Murakoshi, Naoki Ejima, Toshiroh Nishio +1 more 2007-06-12
7225388 Error correction encoding and decoding methods and apparatuses for DVI audio data Naoki Ejima, Toshiroh Nishio, Hidekazu Suzuki, Hiroshige Okamoto, Tetsuya Hiroe +1 more 2007-05-29
7188298 Error correction encoding and decoding methods and apparatuses for DVI audio data Naoki Ejima, Toshiroh Nishio, Hidekazu Suzuki, Hiroshige Okamoto, Tetsuya Hiroe +1 more 2007-03-06
7129991 Transmission method of digital audio data with video data Naoki Ejima, Toshiroh Nishio, Hidekazu Suzuki, Sho Murakoshi, Tetsuya Hiroe +1 more 2006-10-31
7106943 Coding device, coding method, program and recording medium Takashi Katayama, Kosuke Nishio, Masaharu Matsumoto, Takeshi Fujita, Masahiro Sueyoshi +1 more 2006-09-12