RY

Ryoji Yamaguchi

TO Toshiba: 6 patents #129 of 2,688Top 5%
Sumitomo Electric Industries: 6 patents #4,612 of 21,551Top 25%
Brother Kogyo: 5 patents #1,308 of 2,767Top 50%
IC Iwatsu Electric Co.: 5 patents #11 of 212Top 6%
KT Kabushiki Kaisha Toshiba: 4 patents #6,684 of 21,451Top 35%
PA Panasonic: 3 patents #7,617 of 21,108Top 40%
SO Socionext: 1 patents #229 of 541Top 45%
YC Yamamoto Chemicals: 1 patents #54 of 80Top 70%
Overall (All Time): #118,713 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 26–31 of 31 patents

Patent #TitleCo-InventorsDate
4489410 Apparatus for installing a disk Yoshiaki Tago 1984-12-18
4443043 Electric motor unit 1984-04-17
4421385 Polygon mirror for use with laser beam scanning apparatus including means for handling and storing the mirror 1983-12-20
D267179 Call processor for a telephone system Toshio Kurita 1982-12-07
D265087 Telephone unit Noboru Mihara 1982-06-22
4327287 Laser scanning apparatus Tutomu Saito 1982-04-27