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 151–175 of 273 patents

Patent #TitleCo-InventorsDate
D384045 Optical disc drive Shigeru Hasegawa 1997-09-23
D383461 Combined amplifier and radio tuner Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1997-09-09
5653119 Refrigerating system incorporating therein a variable capacity refrigerant compressor Kazuya Kimura, Takahiro Moroi, Shigeyuki Hidaka, Hiroaki Kayukawa, Manabu Sugiura 1997-08-05
D381658 Combined digital audio disc player, radio tuner, amplifier and tape recorder Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1997-07-29
D380755 Tape recorder Minoru Sube, Hiroyuki Watanabe, Yukio Iikura 1997-07-08
D378101 Tape cartridge for tape printer 1997-02-18
D377176 Speaker box Minoru Sube, Hiroyuki Watanabe 1997-01-07
D374233 Speaker box Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1996-10-01
5556260 Multiple-cylinder piston type refrigerant compressor Kenji Takenaka, Hiroaki Kayukawa, Osamu Hiramatsu, Suguru Hirota, Taro Ozeki 1996-09-17
D372915 Combined tuner and amplifier Shigeru Hasegawa, Minoru Sube, Haruki Takita, Hiroyuki Watanabe, Yukio Iikura 1996-08-20
D371783 Digital audio disc player Shigeru Hasegawa, Katsuhiro Takashima, Yasunobu Shimizu, Yukio Iikura 1996-07-16
D370895 Disk drive unit Shigeru Hasegawa, Katsuhiro Takashima 1996-06-18
5517900 Tiltable swash plate type compressor Kazuya Kimura, Shigeki Kanzaki 1996-05-21
D368714 Digital audio tape recorder Shigeru Hasegawa, Katsuhiro Takashima 1996-04-09
5501579 Axial multi-piston compressor having rotary valve for allowing residual part of compressed fluid to escape Kazuya Kimura, Chuichi Kawamura, Yoshihiro Makino 1996-03-26
D367275 Combined amplifier and radio tuner Minoru Sube, Haruki Takita, Hiroyuki Watanabe 1996-02-20
D367052 Combined audio mixer and tape recorder Shigeru Hasegawa, Katsuhiro Takashima, Keiji Tsunoda, Yasunobu Shimizu 1996-02-13
D366471 Disk drive unit Shigeru Hasegawa 1996-01-23
5486098 Swash plate type variable displacement compressor Kazuya Kimura, Hideki Mizutani, Yoshihiro Makino, Suguru Hirota, Taro Ozeki +2 more 1996-01-23
D365822 Front panel for a combined digital audio disc player, radio receiver, amplifier tape recorder and speakers Minoru Sube, Haruki Takita, Hiroyuki Watanabe, Yukio Iikura 1996-01-02
D365097 Streaming cassette tape drive for measuring apparatus Shigeru Hasegawa, Katsuhiro Takashima, Yasunobu Shimizu 1995-12-12
D362845 Streaming cassette tape drive for measuring apparatus Koji Suzuki, Shigeru Hasegawa 1995-10-03
D362666 Digital audio tape recorder Shigeru Hasegawa, Katsuhiro Takashima, Keiji Tsunoda 1995-09-26
D362002 Disk recording/reproducing apparatus Shigeru Hasegawa, Katsuhiro Takashima 1995-09-05
D362012 Word processor Hyunsoo Hong, Shuichiro Shimoki 1995-09-05