YD

Yoshiaki Doyama

Sumitomo Electric Industries: 11 patents #2,408 of 21,551Top 15%
WA Walbro: 2 patents #81 of 212Top 40%
PA Panasonic: 2 patents #9,678 of 21,108Top 50%
Overall (All Time): #343,484 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
11293380 Charge forming device with adjustable valve limiter Teruhiko Tobinai 2022-04-05
10738741 Charge forming device with adjustable valve limiter Teruhiko Tobinai 2020-08-11
8664899 Motor drive control device Yoshinori Takeoka, Hidehisa Tanaka 2014-03-04
6320772 Converter circuit having control means with capability to short-circuit converter output Kaneharu Yoshioka, Mitsuo Ueda, Masanori Ogawa, Hideo Matsushiro 2001-11-20
6232730 Brushless motor driving circuit and a method of controlling the brushless motor driving circuit Hideki Nakata, Kaneharu Yoshioka, Makoto Yoshida 2001-05-15
6121736 Control apparatus for motor, and motor unit having the control apparatus Kazushige Narazaki, Tomokuni Iijima, Toru Tazawa, Yukinori Maruyama 2000-09-19
5778885 Force sensation exhibiting device data input device and data input equipment Masataka Ozeki, Keizo Matsui, Yoshiteru Ito 1998-07-14
5646499 Inverter control apparatus Keizo Matsui, Yoshiteru Ito, Kaneharu Yoshioka, Hideo Ogata, Izumi Yoshida +1 more 1997-07-08
5555894 Force sensation exhibiting device, data input device and data input equipment Masataka Ozeki, Keizo Matsui, Yoshiteru Ito 1996-09-17
5247806 Multi-system air conditioner Koji Ebisu, Masataka Ozeki, Masami Funakura, Yuji Yoshida, Kanji Haneda 1993-09-28
5222371 Air conditioner of multichamber type Koji Ebisu, Masataka Ozeki, Yuji Yoshida 1993-06-29
4794472 Video tape reproducing apparatus with a processor that time-shares different operations 1988-12-27
4791507 Apparatus for reproducing information at variable speeds from a magnetic tape Kanji Kubo, Koichi Yamada 1988-12-13
4764819 Method and apparatus for helical scan type magnetic recording and reproducing with a rotary magnetic head Kanji Kubo 1988-08-16