KS

Keiji Sakai

Sharp Kabushiki Kaisha: 22 patents #701 of 10,731Top 7%
HI Hitachi: 7 patents #5,859 of 28,497Top 25%
HH Hitachi High-Technologies: 6 patents #452 of 1,917Top 25%
LC Laurel Bank Machines Co.: 3 patents #41 of 139Top 30%
KC Kobelco Construction Machinery Co.: 3 patents #130 of 422Top 35%
KS Kawasaki Steel: 2 patents #570 of 1,922Top 30%
LC Laurel Precision Machines Co.: 2 patents #11 of 64Top 20%
KC Kyoto Electronics Manufacturing Co.: 2 patents #4 of 23Top 20%
Canon: 1 patents #14,899 of 19,416Top 80%
HC Hitachi Electronics Engineering Co.: 1 patents #61 of 175Top 35%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
TT The University Of Tokyo: 1 patents #1,000 of 2,633Top 40%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
📍 Kasai, JP: #83 of 5,842 inventorsTop 2%
Overall (All Time): #57,075 of 4,157,543Top 2%
48
Patents All Time

Issued Patents All Time

Showing 1–25 of 48 patents

Patent #TitleCo-InventorsDate
12195310 Crane Takuya Watanabe, Shoji Watanabe 2025-01-14
11981542 Hoisting implement, hoisting implement system, and method for using hoisting implement system Akira KOYAHATA, Hiroshi Nakashioya 2024-05-14
10184872 Viscosity/elasticity measurement device and measurement method 2019-01-22
10168267 Rotational speed detection device, viscosity measurement device using the device, rotational speed detection method, and rotating object used in the method Masanori Yasuda 2019-01-01
10053159 Cabin support deck Tomonori Nakashita, Kiyotsuna Kuchiki 2018-08-21
9518908 Fluid mechanical property measurement method and measurement device Tomoki Ishiwata 2016-12-13
9372141 Viscosity measuring apparatus Masanori Yasuda 2016-06-21
8757348 Paper money input and output device Eiichi Yoshikawa 2014-06-24
8727592 Light source module and electronic apparatus provided with same Takuya Ishizaka, Kazuya Ikuta, Eiji Kurimoto, Sumito Nishioka, Hirotsugu Matoba +1 more 2014-05-20
8599447 Illuminating apparatus, image reading apparatus, and image forming apparatus Yasuhiro Suto, Tomohiko Okada, Shohichi Fukutome, Hisashi Yamanaka, Kenji Nakanishi +3 more 2013-12-03
8365582 Device for measuring viscosity/elasticity and method for measuring viscosity/elasticity 2013-02-05
8189434 Optical pickup unit and optical pickup device having same and information writing/reading device having same Osamu Miyazaki, Yukio Watanabe 2012-05-29
8051321 Cluster system and node switching method Jun Nakagawa, Takahiro Kojima, Ryuji Maruyama, Shinji Yamauchi 2011-11-01
7940383 Method of detecting defects on an object Minori Noguchi, Yoshimasa Ohshima, Hidetoshi Nishiyama, Shunichi Matsumoto, Yukio Kembo +7 more 2011-05-10
7882942 Coin bar storage Eiko Hibari 2011-02-08
7692779 Apparatus and method for testing defects Minori Noguchi, Yoshimasa Ohshima, Hidetoshi Nishiyama, Shunichi Matsumoto, Yukio Kembo +7 more 2010-04-06
7649825 Splitting element, light emitter, and optical pickup apparatus Kazuhiro Tsuchida, Toshiya Nagahama, Tetsuo Ueyama, Katsushige Masui, Naotaka Otsuka 2010-01-19
7639350 Apparatus and method for testing defects Minori Noguchi, Yoshimasa Ohshima, Hidetoshi Nishiyama, Shunichi Matsumoto, Yukio Kembo +7 more 2009-12-29
7625673 Electrode material for electrochemical element and method for production thereof, and electrochemical element Tetsuichi Kudo, Masaru Miyayama, Yasuo Takeda, Itaru Honma, Hiroshi Abe 2009-12-01
7486403 Droplet shape measuring method and apparatus Tatsuo Osaka, Yoshikatsu Okada, Shigeru Yamada 2009-02-03
7483360 Optical pickup device using polarizing hologram element and hologram laser therefor Katsushige Masui, Kazuhiro Tsuchida, Kazunori Matsubara, Masahiro Ikehara, Tetsuo Ueyama +1 more 2009-01-27
7443496 Apparatus and method for testing defects Minori Noguchi, Yoshimasa Ohshima, Hidetoshi Nishiyama, Shunichi Matsumoto, Yukio Kembo +7 more 2008-10-28
7315502 Light integration unit, optical pickup device using the unit, and optical disk device Takahiro Miyake, Tetsuo Ueyama, Renzaburo Miki, Hiroshige Makioka, Noboru Fujita +1 more 2008-01-01
7184384 Optical pickup Tetsuo Ueyama, Renzaburou Miki, Osamu Miyazaki, Yukio Watanabe 2007-02-27
7136409 Semiconductor laser device and optical pickup device Masahiro Ikehara, Katsushige Masui, Kazuhiro Tsuchida 2006-11-14