HK

Hisashi Kawamoto

SP Seiko Precision: 24 patents #4 of 173Top 3%
Ricoh Company: 2 patents #5,693 of 9,818Top 60%
SI Seiko Instruments: 1 patents #836 of 1,437Top 60%
Shimano: 1 patents #486 of 759Top 65%
Overall (All Time): #139,188 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
10427256 Printed substrate holding device 2019-10-01
9381974 Electric derailleur motor unit and motorized derailleur Takafumi Katsura, Kensuke Tagaya, Yasuhiro Uno 2016-07-05
8934162 Diaphragm device 2015-01-13
8879972 Fuser and image-forming apparatus Kenji Maeda, Kenji Taguchi, Yukari Isoe, Toshiki Yokoyama 2014-11-04
8419298 Drive mechanism, blade drive mechanism and optical device Yutaka Asai 2013-04-16
8314878 Image pickup apparatus with impact resistance 2012-11-20
8145050 Lens drive device 2012-03-27
8100593 Speed reducing mechanism, drive device, and optical instrument 2012-01-24
8074979 Sheet feed tray and image forming apparatus 2011-12-13
8070370 Gear mechanism and blade drive device 2011-12-06
8057113 Blade drive device and optical apparatus 2011-11-15
7918617 Vane driving device using a blade as a gear rotation stopping means Osamu Takano 2011-04-05
D633923 Geared motor 2011-03-08
7854557 Vane driving device 2010-12-21
7791821 Lens drive apparatus Minoru Katsumata 2010-09-07
7768726 Lens drive device 2010-08-03
7750528 Actuator and coil frame 2010-07-06
7686725 Reduction gear 2010-03-30
7658558 Shutter and optical apparatus having the same apparatus Kazuya Shioda, Phichet Numnual 2010-02-09
7626775 Lens drive apparatus 2009-12-01
7572075 Shutter apparatus Kazuya Shioda 2009-08-11
7511391 Electromagnetic actuator Satoru Tada, Takashi Nakano 2009-03-31
7462969 Electromagnetic actuator with external coils Takashi Nakano, Toshiaki Mikuriya, Akinori Kobayashi 2008-12-09
7441966 Shutter and optical apparatus having the same Kazuya Shioda, Phichet Numnual 2008-10-28
7385320 Step motor Seiichi Oishi 2008-06-10