YS

Yuji Sawai

Ricoh Company: 10 patents #2,244 of 9,818Top 25%
Overall (All Time): #524,945 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
6405002 Image formation apparatus Hiromi Ogiyama, Toshiharu Hachisuka 2002-06-11
6163661 Electrostatic image forming apparatus capable of reducing defective image transfer caused by free toner particles deposited on a corona discharger Shinichi Namekata, Toshiaki Motohashi, Katsuya Kawagoe 2000-12-19
5890030 Electrostatic image forming apparatus Shinichi Namekata, Toshiaki Motohashi, Katsuya Kawagoe 1999-03-30
5410339 Image forming apparatus Takashi Bisaiji 1995-04-25
5208211 Image-receiving sheet for electrophotography and electrophotographic method using the same Tsuneo Kurotori, Itsuo Ikeda, Manabu Mochizuki 1993-05-04
5057873 Method of cleaning a transfer drum of an electrophotographic apparatus Toshio Nakahara 1991-10-15
5003354 Method of removing a film from an image carrier of an image forming apparatus Yoshio Takamiya, Kazuyuki Sugihara, Chikara Imai, Nobuyuki Koinuma 1991-03-26
4989043 Color-balance control method Koji Suzuki, Hajime Oyama, Shinichi Namekata, Hideo Yoo 1991-01-29
4975748 Method of removing a film from an image carrier Nobuyuki Koinuma, Chikara Imai, Yoshio Takamiya, Kazuyuki Sugihara 1990-12-04
4254201 Pressure sensitive adhesive toner of clustered encapsulated porous particles for use in electrostatic photography Hisayuki Ushiyama 1981-03-03