JF

Junji Fujii

Yamaha: 11 patents #208 of 2,001Top 15%
YE Yaskawa Electric: 1 patents #557 of 1,006Top 60%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
Overall (All Time): #381,161 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
9537415 Power generating device, control device, controlling method and power generation system Takashi Tanaka, Kotaro Takeda, Wataru YOSHINAGA 2017-01-03
8148623 Apparatus for assisting in playing musical instrument Hideyuki Masuda, Yutaka Tohgi 2012-04-03
7858871 Playing device Ryuji Hashimoto 2010-12-28
7671260 Component of musical instrument, musical instrument and production method of the same Hiroyasu Abe 2010-03-02
7642439 Electronic drum and its drum head 2010-01-05
7605324 Apparatus for assisting in playing musical instrument Hideyuki Masuda, Yutaka Tohgi 2009-10-20
7554028 Performance assist apparatus of wind instrument 2009-06-30
6667429 Method for manufacturing modified wood Hiroyasu Abe 2003-12-23
6355830 Process for preparation of dicarboxylic acid monoesters Kunihiko Sakano, Tetsuya Ikemoto 2002-03-12
5587544 Drum Yukimasa Okumura 1996-12-24
5410937 Supporting mechanism for a sound generator of a musical instrument Tomio Okamoto 1995-05-02
D350362 Musical drum rim 1994-09-06
4858510 Resonant musical instruments Isao Shimoda, Mitsugu Yaguchi 1989-08-22