TH

Takamasa Hase

Ricoh Company: 130 patents #10 of 9,818Top 1%
Overall (All Time): #8,281 of 4,157,543Top 1%
131
Patents All Time

Issued Patents All Time

Showing 126–131 of 131 patents

Patent #TitleCo-InventorsDate
8385804 Fixing device and image forming apparatus employing the fixing device Yoshiki Yamaguchi, Kenichi Hasegawa, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii +8 more 2013-02-26
8364052 Fixing device and image forming apparatus incorporating same Naoki Iwaya, Akira Shinshi, Masaaki Yoshikawa, Kenji Ishii, Kenichi Hasegawa +8 more 2013-01-29
8311469 Fixing device and image forming apparatus incorporating same Masaaki Yoshikawa, Yoshiki Yamaguchi, Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya +8 more 2012-11-13
8185030 Fixer, image forming apparatus including same, and fixing method Hiroshi Seo 2012-05-22
8175480 Fixing device including plural demagnetizing coils and image forming apparatus Hiroshi Seo 2012-05-08
7983582 Image forming apparatus and control method therefor 2011-07-19