HY

Hideo Yoo

Ricoh Company: 4 patents #4,167 of 9,818Top 45%
Overall (All Time): #1,299,255 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4989043 Color-balance control method Koji Suzuki, Hajime Oyama, Shinichi Namekata, Yuji Sawai 1991-01-29
4875079 Toner density control for multicolor electrophotographic copier Takashi Bisaiji, Noboru Sawayama 1989-10-17
4737821 Colored image recording device Kohji Suzuki, Tsutomu Shoji 1988-04-12
4502780 Photoconductor cleaning apparatus Kohji Suzuki, Yoshio Takamiya 1985-03-05