Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
MI

Masafumi Ito

TETeac: 188 patents #1 of 440Top 1%
Yamaha: 38 patents #17 of 2,001Top 1%
TIToyota Industries: 11 patents #904 of 1,610Top 60%
SLSemiconductor Energy Laboratory: 7 patents #603 of 1,113Top 55%
Bridgestone: 5 patents #476 of 2,860Top 20%
Brother Kogyo: 5 patents #1,308 of 2,767Top 50%
NCNu Eco Engineering Co.: 4 patents #3 of 12Top 25%
Sharp Kabushiki Kaisha: 4 patents #3,475 of 10,731Top 35%
ASAsics: 4 patents #79 of 285Top 30%
MUMeijo University: 2 patents #21 of 103Top 25%
TLTokyo Electron Limited: 2 patents #2,602 of 5,567Top 50%
BIBrother Industries: 1 patents #24 of 45Top 55%
KCKatagiri Engineering Co.: 1 patents #6 of 11Top 55%
MMMitsubishi Materials: 1 patents #812 of 1,543Top 55%
NUNagoya University: 1 patents #34 of 109Top 35%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
NCNpc Co.: 1 patents #7 of 17Top 45%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Hamamatsu, JP: #4 of 41 inventorsTop 10%
Overall (All Time): #1,610 of 4,157,543Top 1%
273 Patents All Time

Issued Patents All Time

Showing 226–250 of 273 patents

Patent #TitleCo-InventorsDate
D328747 Combined tuner and amplifier Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1992-08-18
D327890 Tape recorder Shigeru Hasegawa, Minoru Sube, Yuji Sato, Yukio Iikura 1992-07-14
D327889 Digital audio disk player Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1992-07-14
D327688 Combined tuner and amplifier Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1992-07-07
D326454 Combined audio mixer and tape recorder Shigeru Hasegawa 1992-05-26
D326093 Open reel type tape recorder deck Koji Suzuki, Shigeru Hasegawa, Minoru Sube 1992-05-12
D326096 Digital-analog converter Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima 1992-05-12
D325910 Combined audio mixer and tape recorder Shigeru Hasegawa, Katsuhiro Takashima, Keiji Tsunoda 1992-05-05
D325737 Audio mixer Shigeru Hasegawa, Keiji Tsunoda 1992-04-28
D325580 Audio mixer Shigeru Hasegawa, Minoru Sube, Keiji Tsunoda 1992-04-21
D325383 Audio mixer Shigeru Hasegawa, Minoru Sube, Keiji Tsunoda 1992-04-14
D325204 Combined audio mixer and tape recorder Shigeru Hasegawa, Haruki Takita, Katsuhiro Takashima, Keiji Tsunoda 1992-04-07
D325206 Open reel type tape recorder deck Koji Suzuki, Shigeru Hasegawa 1992-04-07
D325205 Open reel type tape recorder deck Koji Suzuki, Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima 1992-04-07
D323507 Remote controller for tape recorder Koji Suzuki, Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima 1992-01-28
D322964 Streaming cassette tape drive Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima, Keiji Tsunoda 1992-01-07
D322779 Streaming cassette tape drive Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima, Keiji Tsunoda 1991-12-31
D322600 Streaming cassette tape drive Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima, Keiji Tsunoda 1991-12-24
D322431 Streaming cassette tape drive Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima, Keiji Tsunoda 1991-12-17
D322247 Streaming cassette tape drive Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima, Keiji Tsunoda 1991-12-10
D321876 Data recorder/reproducer Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima 1991-11-26
D321194 Combined digital audio disc player, tuner and tape recorder Shigeru Hasegawa, Minoru Sube, Yuji Sato 1991-10-29
D321189 Digital audio disc player Shigeru Hasegawa, Minoru Sube 1991-10-29
D321190 Digital audio disc player Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima 1991-10-29
D321191 Digital audio disc player Shigeru Hasegawa, Minoru Sube, Hiroyuki Watanabe 1991-10-29