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 126–150 of 273 patents

Patent #TitleCo-InventorsDate
D405448 Digital audio disc player Shigeru Hasegawa 1999-02-09
D405087 Combined speaker box and front panel with load horn Hiroyuki Watanabe, Yukio Iikura 1999-02-02
D405085 Combined speaker box and front panel with load horn Hiroyuki Watanabe, Yukio Iikura 1999-02-02
D402984 Combined audio mixer and tape recorder Haruki Takita, Yasunobu Shimizu 1998-12-22
D401917 Disk drive Shigeru Hasegawa, Yoshinori Fuse 1998-12-01
D401586 Audio remote controller Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1998-11-24
D397197 Air cleaner Shigeru Hasegawa 1998-08-18
D396719 Digital audio tape recorder Haruki Takita, Katsuhiro Takashima 1998-08-04
D394260 Combined digital audio disc player and tape recorder Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1998-05-12
D394059 Digital audio tape recorder Haruki Takita, Katsuhiro Takashima 1998-05-05
D392638 Digital audio disc player Hiroyuki Watanabe, Yukio Iikura 1998-03-24
D391957 Optical disc player Haruki Takita, Katsuhiro Takashima, Yasunobu Shimizu 1998-03-10
D391571 Optical disc player Shigeru Hasegawa, Keiji Tsunoda, Tooru Katayama 1998-03-03
D391259 Combined tuner and amplifier Shigeru Hasegawa, Hiroyuki Watanabe, Minoru Sube 1998-02-24
D391258 Combined tuner and amplifier Shigeru Hasegawa, Hiroyuki Watanabe, Minoru Sube 1998-02-24
D390234 Speaker box covered by a panel with a load horn Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1998-02-03
D389128 Optical disc drive Haruki Takita, Katsuhiro Takashima, Yasunobu Shimizu 1998-01-13
D389147 Combined digital audio disc player, radio tuner, amplifier, and tape recorder Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1998-01-13
D387761 Combined digital audio disc player, radio tuner, amplifier and tape recorder Minoru Sube, Hiroyuki Watanabe 1997-12-16
D387760 Combined digital audio disc player, radio tuner, amplifier and tape recorder Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1997-12-16
D386482 Optical disc drive Shigeru Hasegawa, Haruki Takita, Katsuhiro Takashima 1997-11-18
D385275 Digital audio disc player Minoru Sube, Haruki Takita, Hiroyuki Watanabe, Yukio Iikura 1997-10-21
D384665 Digital audio discplayer Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1997-10-07
D384349 Tape recorder Minoru Sube, Hiroyuki Watanabe 1997-09-30
D384356 Combined audio mixer and tape recorder Shigeru Hasegawa, Haruki Takita, Katsuhiro Takashima 1997-09-30