Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12271122 | Waste toner container, manufacturing method, and image forming apparatus | Madoka Okabe | 2025-04-08 |
| 9896284 | Sheet material feeding device and image forming apparatus | Shuan Yang, Yuki Doshida | 2018-02-20 |
| 9426310 | Technique for setting paper size for image forming apparatus | Tetsuya Onuki, Morihisa Kawahara | 2016-08-23 |
| 9025984 | Image forming apparatus capable of stably detecting temperature of fixing device regardless of orientation of the image forming apparatus | Koji Soda, Masashi Kawai | 2015-05-05 |
| 7881626 | Image formation apparatus utilizing density of waste toner to detect amount thereof | Ryoichi Yamamoto | 2011-02-01 |
| 7702260 | Development cartridge, development device, and image formation apparatus | Hiroshi Ibaraki, Shoji Fukui, Atsushi Ohata | 2010-04-20 |
| 7660541 | Image formation apparatus utilizing density of waste toner to detect amount thereof | Ryoichi Yamamoto | 2010-02-09 |
| 7502573 | Image forming apparatus having a heat-discharging rotary-type development unit | Atsushi Ohata, Hiroshi Ibaraki, Shoji Fukui | 2009-03-10 |
| 6535214 | Semiconductor device for display control | Yoshinao Morikawa | 2003-03-18 |
| 5949111 | Semiconductor device and fabrication process therefor | Yoshinao Morikawa, Toshihisa Gotou | 1999-09-07 |
| 5891780 | Method of fabricating mask ROM using junction isolation | Masahiro Hasegawa | 1999-04-06 |
| 5648672 | Semiconductor device with outer diffusion layer | Masahiro Hasegawa | 1997-07-15 |
| 5453709 | Constant CMOS delay circuit | Toshiji Ishii | 1995-09-26 |
| 5408172 | Step-down circuit for power supply voltage capable of making a quick response to an increase in load current | Toshiji Ishii | 1995-04-18 |
| 4694393 | Peripheral unit for a microprocessor system | Takaaki Hirano, Setsufumi Kamuro, Akira Yamaguchi, Mikiro Okada | 1987-09-15 |