Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5708918 | Image formation apparatus that can maintain appropriately toner density in developing device | Yukihiko Okuno, Masaki Tanaka, Naoyoshi Kinoshita, Atsushi Kawai | 1998-01-13 |
| 5694223 | Digital image forming apparatus which specifies a sensitivity characteristic of a photoconductor | Kentaro Katori, Yukihiko Okuno, Masaki Tanaka, Hironobu Nakata, Katsuyuki Hirata | 1997-12-02 |
| 5581221 | Electrophotographic image forming apparatus | Atsushi Kawai, Hiroshi Sakakibara, Tetsuya Sakai, Hiroshi Nishikawa | 1996-12-03 |
| 5555318 | Thresholding method for segmenting gray scale image, method for determining background concentration distribution, and image displacement detection method | Minoru Ito | 1996-09-10 |
| 5506917 | Thresholding method for segmenting gray scale image, method for determining background concentration distribution, and image displacement detection method | Minoru Ito | 1996-04-09 |
| 5364684 | Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer | Seiji Sakamoto, Toshifumi Takisawa | 1994-11-15 |
| 5270308 | 1,3-benzoxazine derivatives, their production and use | Mitsuru Shiraishi, Shohei Hashiguchi | 1993-12-14 |