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 76–100 of 273 patents

Patent #TitleCo-InventorsDate
D443606 Digital recording controller Haruki Takita, Yasunobu Shimizu 2001-06-12
D442937 Combined record player, radio tuner and amplifier Minoru Sube, Yukio Iikura, Hiroyuki Watanabe 2001-05-29
D442608 Sewing machine 2001-05-22
D442573 Combined digital audio disc player, radio tuner and amplifier Minoru Sube, Yukio Iikura, Hiroyuki Watanabe 2001-05-22
D441351 Combined digital audio disc player, amplifier and tuner Hiroyuki Watanabe, Yukio Iikura 2001-05-01
D439240 Speaker box Hiroyuki Watanabe, Yukio Iikura, Minoru Sube 2001-03-20
D439239 Speaker box Hiroyuki Watanabe, Yukio Iikura 2001-03-20
D439236 Combined digital audio disc player and tape recorder Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 2001-03-20
D436942 Combined amplifier and tuner Hiroyuki Watanabe, Yukio Iikura 2001-01-30
D436596 Magnetic disc memory Keiji Tsunoda 2001-01-23
D436347 Control device for electric apparatus Haruki Takita, Yasunobu Shimizu 2001-01-16
D435833 Control device for electric apparatus Haruki Takita, Yasunobu Shimizu 2001-01-02
D434749 Combined digital audio disc player, amplifier and tuner Yukio Iikura, Keiji Tsunoda, Hiroyuki Watanabe, Ayumi Kobayashi 2000-12-05
6149757 Laminating apparatus Yoshiro Chikaki, Tsugio Kirino 2000-11-21
D433673 Front panel for audio mixer Haruki Takita, Yasunobu Shimizu 2000-11-14
D432081 Digital-analog converter Shigeru Hasegawa, Katsuhiro Takashima 2000-10-17
D431546 Digital audio disc recorder Hiroyuki Watanabe, Minoru Sube 2000-10-03
D431238 Combined digital audio disc player, amplifier and tuner Hiroyuki Watanabe, Yukio Iikura 2000-09-26
6112639 Structure for collecting leaking oil in compressor Kazuya Kimura 2000-09-05
D429705 Video tape recorder Shigeru Hasegawa, Katsuhiro Takashima, Hitoshi Yoshida 2000-08-22
D428404 Digital audio disc player Hiroyuki Watanabe, Yukio Iikura 2000-07-18
D427990 Digital audio disc player Minoru Sube, Hiroyuki Watanabe 2000-07-11
D427989 Digital audio disc player Hiroyuki Watanabe, Minoru Sube 2000-07-11
D427579 Digital audio disc player Minoru Sube, Hiroyuki Watanabe 2000-07-04
D426824 Tape recorder Hiroyuki Watanabe, Yukio Iikura 2000-06-20