KH

Kumiko Hatakeyama

Ricoh Company: 18 patents #1,197 of 9,818Top 15%
Overall (All Time): #258,082 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
8509670 Image bearing member to which boron nitride is attached Toshiyuki Kabata, Hiroshi Nakai 2013-08-13
8374537 Image forming apparatus, protectant applicator and process cartridge Toshiyuki Kabata 2013-02-12
8340562 Image forming apparatus, protective agent and process cartridge Toshiyuki Kabata 2012-12-25
8180271 Protective layer setting unit, process cartridge, and image forming apparatus, and method of evaluating protective layer setting unit Toshiyuki Kabata, Tsutomu Hayashi, Masahide Yamashita 2012-05-15
7991342 Protective material and image forming apparatus using the protective material Toshiyuki Kabata, Kunio Hasegawa, Shinya Tanaka, Masahide Yamashita, Masato Iio +1 more 2011-08-02
7991327 Image forming apparatus and process cartridge Toshiyuki Kabata 2011-08-02
7986910 Lubricant coater, image bearing unit, and image forming apparatus Toshiyuki Kabata, Masahide Yamashita 2011-07-26
7979016 Image forming apparatus and protective agent block Toshiyuki Kabata, Kunio Hasegawa, Masahide Yamashita 2011-07-12
7840152 Image forming apparatus, process cartridge, cleaning system, and image forming apparatus with cleaning system Yasushi Koichi, Koji Suzuki, Shigekazu Enoki, Osamu Ariizumi 2010-11-23
7826787 Protective-agent applying device, process cartridge, and image forming apparatus Toshiyuki Kabata, Masahide Yamashita 2010-11-02
7738829 Process cartridge including photoconductor pre-coated with protective agent and image forming apparatus using same Toshiyuki Kabata, Masahide Yamashita 2010-06-15
7734242 Protective layer setting unit, process cartridge, and image forming apparatus using same Toshiyuki Kabata, Masahide Yamashita 2010-06-08
7693476 Image forming apparatus with protective agent applying unit and process cartridge Toshiyuki Kabata, Masahide Yamashita 2010-04-06
7639957 Image forming apparatus including controller to detect condition of image developer Shinji Kato, Koji Suzuki, Yasushi Koichi, Shigekazu Enoki, Wakako Murakami 2009-12-29
7583914 Charge member, charge apparatus, process cartridge, and image forming apparatus Toshiyuki Kabata 2009-09-01
7499664 Image processing apparatus, process cartridge, and cleaning system with residual toner retaining unit Yasushi Koichi, Koji Suzuki, Shigekazu Enoki, Osamu Ariizumi 2009-03-03
7315711 Image forming apparatus, process cartridge and cleaningless system Osamu Ariizumi, Masahide Yamashita, Koji Suzuki, Yasushi Koichi, Shigekazu Enoki +3 more 2008-01-01
7218879 Image forming apparatus controlling polarity of residual toner and process cartridge for use in the same Shigekazu Enoki, Koji Suzuki, Yasushi Koichi, Osamu Ariizumi, Koichi Kato +3 more 2007-05-15