Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12103316 | Image forming apparatus, lifetime determination method and non-transitory computer-readable recording medium storing lifetime determination program | Katsuhiro UMEDA, Yusuke Nishisaka | 2024-10-01 |
| 10675873 | Head cleaning device, image forming device, and head cleaning method of image forming device | Taku Mitsuhashi | 2020-06-09 |
| 9403344 | Bonded body made from different materials and method for producing the same | Keiichi Sato, Shinichi Kuroda, Takahiko Kawai | 2016-08-02 |
| 9077938 | Electrostatigraphic image forming apparatus with droplet ejecting unit | Hiroyuki Saito, Eri Yagi, Tomohiro Kawasaki | 2015-07-07 |
| 8503901 | Image forming apparatus with a toner contamination detecting device | Seiko Itagaki, Natsuko Minegishi, Hiroyuki Saito | 2013-08-06 |
| 8369750 | Developing device | Seiko Itagaki, Natsuko Minegishi | 2013-02-05 |
| 8369752 | Image forming apparatus | Tatsuya Furuta, Toshiki Masuda, Hiroyuki Tokimatsu | 2013-02-05 |
| 8369754 | Developing device and image forming apparatus | Seiko Itagaki | 2013-02-05 |
| 8331833 | Image forming apparatus | Tatsuya Furuta | 2012-12-11 |
| 8244164 | Image forming apparatus with two developing rollers, and an electrode therebetween | Hiroyuki Saito, Seiko Itagaki, Natsuko Minegishi | 2012-08-14 |
| 8175502 | Developing device, image forming apparatus and developing roller | Seiko Itagaki | 2012-05-08 |
| 8114511 | Composite porous membrane and method for producing the same | — | 2012-02-14 |
| 7801470 | Developing device, process unit, and image forming apparatus | Natsuko Minegishi, Seiko Itagaki | 2010-09-21 |
| 7512351 | Image forming apparatus which suppresses selective development of toner | Seiko Itagaki, Isamu Miura | 2009-03-31 |
| 7362990 | Image forming apparatus | Seiko Itagaki, Isamu Miura | 2008-04-22 |
| 7356289 | Image forming apparatus with toner forced discharge mode | Seiko Itagaki, Isamu Miura | 2008-04-08 |
| 7340189 | Image forming apparatus and image adjusting method | Seiko Itagaki, Isamu Miura | 2008-03-04 |
| 7294685 | Sulfonated polyphosphazene derivative and method for producing the same | — | 2007-11-13 |
| 7251440 | Development apparatus and image formation apparatus | Kunio Shigeta, Seiko Itagaki | 2007-07-31 |
| 7251442 | Color image forming apparatus having advanced transfer system | Yotaro Sato, Takenobu Kimura | 2007-07-31 |
| 7045241 | Proton conductive solid polymer electrolyte and method for producing the same | Teruaki Komiya | 2006-05-16 |
| 6985685 | Developing device and image forming apparatus | Kunio Shigeta, Seiko Itagaki, Seiji Yamaguchi, Toru Komatsu | 2006-01-10 |
| 6832058 | Image forming apparatus including a maximum charge quantity of toner particles forming useless toner | Kunio Shigeta, Takenobu Kimura, Yotaro Sato | 2004-12-14 |
| 6798999 | Image forming apparatus | Seiko Itagaki, Kunio Shigeta | 2004-09-28 |
| 6770393 | Proton conducting polymer, method for producing the same, solid polymer electrolyte and electrode | Masao Ichikawa, Masaru Iguchi, Hiroyuki Oyanagi | 2004-08-03 |