TH

Tatsuo Hirono

Ricoh Company: 10 patents #2,244 of 9,818Top 25%
Overall (All Time): #520,278 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
7787157 Image reading apparatus, image reading method and image processing apparatus Kohji Matsuda, Manabu Izumikawa, Yohji Mohri, Nobuyuki Kobayashi, Masami Miyajima +1 more 2010-08-31
7062185 Image forming apparatus, image processing unit, and image forming method to keep image quality precision of both sides of recording medium, and computer product Manabu Izumikawa, Yukio Tagawa, Takashi Enami, Kohichi Kanaya, Masami Miyajima +5 more 2006-06-13
7016636 Double-sided image forming apparatus and method Takamasa Hayashi, Takeo Ohashi, Kohichi Kanaya, Jun Sasaki, Yukio Tagawa 2006-03-21
5162859 Image forming apparatus capable of creating duplex mixed full color and black/white copies and delivering copy sets on page-sequential order Yasunori Kawaishi, Nobuo Kasahara 1992-11-10
5160969 Image forming apparatus having a separate black developer stored for a color image Kenichi Mizuma, Hideya Furuta, Nobuo Kasahara, Noriyuki Kimura, Shinju Nagatsuna +6 more 1992-11-03
5159392 Image forming apparatus for forming an image on one or both sides of a recording medium Nobuo Kasahara, Yasunori Kawaishi 1992-10-27
5142339 Image recorder with variable fuser nip entry position Nobuo Kasahara, Yasunori Kawaishi 1992-08-25
4799081 Copying system having copying and service program modes Mitsutoyo Kikuno, Yoshihiro Nakashima, Hirobumi Yoshino 1989-01-17
4682158 Guidance device for manipulation of machine Masaji Ito, Akira Midorikawa, Masayuki Shinada, Hirobumi Yoshino, Mitsuo Shibusawa 1987-07-21
4677310 Power supply control device for copier having timer Akira Midorikawa, Masaji Ito, Masayuki Shinada, Hirobumi Yoshino, Mitsuo Shibusawa 1987-06-30