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 251–273 of 273 patents

Patent #TitleCo-InventorsDate
D321192 Combined digital audo disc player and tape recorder Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1991-10-29
D319236 Combined tape player and tuner Shigeru Hasegawa, Minoru Sube, Hiroyuki Watanabe, Keiji Tsunoda, Manami Fujino +1 more 1991-08-20
D319237 Tape recorder Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima, Haruki Takita, Hiroyuki Watanabe 1991-08-20
D318664 Digital audio disc player Shigeru Hasegawa, Minoru Sube 1991-07-30
D318665 Combined tape player and tuner Shigeru Hasegawa, Minoru Sube, Hiroyuki Watanabe, Keiji Tsunoda, Manami Fujino +1 more 1991-07-30
D317918 Musical instrument digital interface controller Shigeru Hasegawa, Minoru Sube, Koji Suzuki 1991-07-02
D316860 Tape recorder Shigeru Hasegawa, Minoru Sube, Yuji Sato, Yukio Iikura 1991-05-14
D315905 Digital audio disc player Shigeru Hasegawa, Haruki Takita, Minoru Sube 1991-04-02
D315723 Digital-analog converter Shigeru Hasegawa, Haruki Takita, Minoru Sube 1991-03-26
D314562 Streaming cassette tape drive Shigeru Hasegawa, Minoru Sube, Katsuhiro Takashima 1991-02-12
D314197 Digital audio disc player Shigeru Hasegawa, Haruki Takita, Minoru Sube 1991-01-29
D314198 Digital audio disc player Shigeru Hasegawa, Minoru Sube, Yuji Sato 1991-01-29
D313997 Remote controller for audio machines Shigeru Hasegawa, Haruki Takita, Minoru Sube 1991-01-22
D312825 Tape recorder Shigeru Hasegawa, Minoru Sube, Yuji Sato 1990-12-11
D309735 Tape recorder Shigeru Hasegawa, Haruki Takita, Minoru Sube 1990-08-07
D304941 Compact disc player Sigeru Hasegawa, Haruki Takita, Minoru Sube 1989-12-05
D304829 Combined compact disc player and tape recorder Sigeru Hasegawa, Haruki Takita, Minoru Sube 1989-11-28
D300084 Cushioning piece for a shoe sole Yasunori Sugiyama 1989-03-07
D300085 Cushioning piece for a shoe sole Yasunori Sugiyama 1989-03-07
D297932 Video tape recorder Sigeru Hasegawa, Haruki Takita, Minoru Sube 1988-10-04
4768295 Sole 1988-09-06
D291196 Combined tape recorder and audio mixer Koji Suzuki, Shigeru Hasegawa, Haruki Takita 1987-08-04
4545331 Auxiliary air supply apparatus for an internal combustion engine Shuichi Nishimura, Yoichi Hara 1985-10-08