YI

Yutaka Ishimura

Yamaha: 3 patents #738 of 2,001Top 40%
Overall (All Time): #1,617,387 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10417105 Connection confirmation system, connection detection apparatus, and connection confirmation method Masaya Kano, Atsushi USUI, Hiroyuki Ichi 2019-09-17
6424615 Optical disk having plurality of volumes, recording device and reproduction device for same Morihiro Murata, Kenichiro Takeshita 2002-07-23
6243343 Optical disk, optical disk reproducing device and optical disk reproduction system Morihiro Murata, Kenichiro Takeshita 2001-06-05