Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6711374 | Image apparatus with developing cartridge having two accommodating portions | Jun Yamaguchi, Yoshiaki Sanada, Tsutomu Nagata | 2004-03-23 |
| 6603940 | Detachable process cartridge for image forming apparatus | Jun Yamaguchi, Yoshiaki Sanada, Tsutomu Nagata, Takahiko Kimura | 2003-08-05 |
| 6567631 | Toner cartridge and image forming apparatus | Jun Yamaguchi, Yoshiaki Sanada, Tsutomu Nagata, Takahiko Kimura | 2003-05-20 |
| D464079 | Toner cartridge | Jun Yamaguchi, Tsutomu Nagata, Yoshiaki Sanada, Takahiko Kimura | 2002-10-08 |
| D462713 | Developing unit for an image forming apparatus | Jun Yamaguchi, Tsutomu Nagata, Yoshiaki Sanada, Takahiko Kimura | 2002-09-10 |
| 6421517 | Toner supply device with rotatable agitating element | Toshio Nishino, Yasuyuki Ishiguro, Masatoshi Kaneshige, Hiroshi Tanisawa, Haruko Yoneda +4 more | 2002-07-16 |
| 6347207 | Developing unit and toner replenishing device with conveying apparatus | Yasuyuki Ishiguro, Toshio Nishino, Hiroshi Tanisawa, Yoshinori Otsuka, Jun Yamaguchi +2 more | 2002-02-12 |
| 6035168 | Developing device having a reduced width in the horizontal direction | Jitsuo Masuda, Hiroshi Kawamoto, Makoto Uehara, Yasutaka Maeda, Takeshi Wakabayashi +6 more | 2000-03-07 |
| 5358819 | Developer for electrophotography | Yoshinori Urata, Toshihisa Ishida, Norio Tateishi, Shigeaki Tasaka | 1994-10-25 |
| 5172166 | Developing apparatus | — | 1992-12-15 |
| 5144382 | Developing device with a scraping unit arranged to form a stirring area | Ikuo Itoh, Masatoshi Kaneshige, Toshiyuki Kurosaka | 1992-09-01 |
| 4998140 | Developing device for copier with sealing means | Kazuhiro Satou, Hisashi Kunihiro, Akio Shiomi, Hideaki Hagihara | 1991-03-05 |
| 4982690 | Developing device with magnetic supply seals | — | 1991-01-08 |
| 4980728 | Developing device with a magnetic brush turning plate | Masatoshi Kaneshige | 1990-12-25 |