MY

Masao Yoshikawa

Ricoh Company: 17 patents #1,283 of 9,818Top 15%
Canon: 10 patents #6,241 of 19,416Top 35%
Sumitomo Electric Industries: 8 patents #3,473 of 21,551Top 20%
PA Panasonic: 6 patents #4,438 of 21,108Top 25%
SC Shin-Etsu Chemical Co.: 6 patents #590 of 2,176Top 30%
MI Mitsui Toatsu Chemicals, Incorporated: 4 patents #343 of 1,543Top 25%
Fujitsu Limited: 3 patents #8,614 of 24,456Top 40%
NC Ntn-Rulon Industries Company: 2 patents #3 of 9Top 35%
Sharp Kabushiki Kaisha: 2 patents #5,184 of 10,731Top 50%
TO Tomey: 1 patents #22 of 51Top 45%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #40,618 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 1–25 of 59 patents

Patent #TitleCo-InventorsDate
9893992 Communication apparatus, information processing apparatus, and method of controlling communication apparatus Shinya Hiramoto, Tomohiro Inoue, Shun Ando, Masahiro Maeda 2018-02-13
9755888 Information processing device, information processing system, and communication device Tomohiro Inoue, Shun Ando, Shinya Hiramoto, Masahiro Maeda 2017-09-05
9073318 Method of manufacturing liquid discharge head Keiichi Sasaki, Takeru Yasuda 2015-07-07
D705266 Digital video disc player Toshiki Kimura 2014-05-20
D662085 Remote controller for digital video disc player Takako Uchida 2012-06-19
D625752 Eyeglasses Shigeyuki Takao, Michiaki Sugiki 2010-10-19
D624954 Eyeglasses Shigeyuki Takao, Yuki Inoue 2010-10-05
D624953 Eyeglasses Shigeyuki Takao, Amao Takahashi 2010-10-05
D624955 Eyeglasses Takanori Kawano 2010-10-05
7561516 Packet relaying method and device Junichi Ehara, Daisuke Namihira 2009-07-14
D528089 Digital video disc recorder Jyunichi Yamada 2006-09-12
6802608 Low vision measuring instrument Makoto Tamai 2004-10-12
6521386 Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor Yohta Sakon, Narihito Kojima, Minoru Umeda, Hiroshi Nagame, Ryuta Takeichi +1 more 2003-02-18
6517427 Abrasive-bladed multiple cutting wheel assembly Takehisa Minowa 2003-02-11
6379759 Sealing agent for liquid crystal display and liquid crystal display using the sealing agent Sumio Kamoi, Yumi Mochizuki 2002-04-30
6224986 Rare earth permanent magnet of high corrosion resistance Takehisa Minowa, Ryuji Hamada 2001-05-01
6012977 Abrasive-bladed cutting wheel Takehisa Minowa 2000-01-11
5840375 Method for the preparation of a highly corrosion resistant rare earth based permanent magnet Kenichi Katsumi, Takehisa Minowa 1998-11-24
5812240 Eyeball observing device having an ultrasonic detector Kota TERAOKA 1998-09-22
5715022 Image display apparatus Toshiaki Takamatsu, Shinichi Ogawa, Hiroshi Hamada, Noriko Watanabe, Fumiaki Funada 1998-02-03
5492784 Positively-chargeable single-layered type electrophotographic photoconductor Masayuki Shoshi, Tetsuro Suzuki, Masakatsu Shimoda, Kaoru Teramura, Megumi Kawahara +3 more 1996-02-20
5486438 Electrophotographic photoconductor Masayuki Shoshi, Masakatsu Shimoda, Akiko Konishi, Megumi Kawahara, Akio Kojima +1 more 1996-01-23
5405455 Rare earth-based permanent magnet Matou Kusunoki, Takehisa Minowa 1995-04-11
5387487 Electrophotographic photoconductor Masayuki Shoshi, Masakatsu Shimoda, Masahiro Taniucchi, Akio Kojima, Tetsuro Suzuki 1995-02-07
5381187 Image display apparatus Toshiaki Takamatsu, Shinichi Ogawa, Hiroshi Hamada, Noriko Watanabe, Fumiaki Funada 1995-01-10