Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12388693 | Data carrier apparatus, communication system, and replaceable unit | Tsutomu Ishida | 2025-08-12 |
| 12149640 | Technique for protecting secret information of authentication-target apparatus | — | 2024-11-19 |
| 11777920 | Authentication system for preventing replication of authentication target apparatus authenticated by authentication apparatus | — | 2023-10-03 |
| 11507159 | Verification device and verification target device that operates using operation power supplied from the verification device | Hirotaka Ittogi | 2022-11-22 |
| 11296896 | Method of authenticating authentication-target apparatus using challenge and response | Ichiro Iijima | 2022-04-05 |
| 11270172 | Apparatus that operates with unit mounted therein and the unit | Hirotaka Ittogi | 2022-03-08 |
| 11101972 | Communication apparatus, replacement unit, and image forming apparatus | Hirotaka Ittogi, Ichiro Iijima | 2021-08-24 |
| 10965451 | Authentication method, authentication device, authentication target device and image forming apparatus | Ichiro Iijima, Hirotaka Ittogi | 2021-03-30 |
| 10833877 | Method of authenticating authentication-target apparatus by authentication apparatus, authentication apparatus, authentication- target apparatus, and image forming apparatus | Hirotaka Ittogi, Tsutomu Ishida | 2020-11-10 |
| 10528107 | Verification device and verification target device that operates using operation power supplied from the verification device | Hirotaka Ittogi | 2020-01-07 |
| 10482358 | Apparatus that operates with unit mounted therein and the unit | Hirotaka Ittogi | 2019-11-19 |
| 10469243 | Communication apparatus, replacement unit, and image forming apparatus | Hirotaka Ittogi, Ichiro Iijima | 2019-11-05 |
| 7446921 | Image forming apparatus | Souichirou SUZUKI, Shimpei Matsuo, Ryuhei Shoji, Tatsuya Hotogi, Kazunari Fujii | 2008-11-04 |
| 7145111 | Heater drive circuit | — | 2006-12-05 |
| 6628905 | Image forming apparatus | Koichi Suzuki | 2003-09-30 |
| 6359696 | Parallel print and paper feed control method and apparatus, and computer readable storage meduim storing program for realizing the method | Tetsuo Kishida, Koichi Suzuki | 2002-03-19 |
| 6262759 | Method and apparatus for forming an image using signals synchronized with scanning | Satoshi Akiyama, Yoshimi Kuramochi, Akihiro Shibata, Tetsuo Kishida, Koichi Suzuki | 2001-07-17 |
| 5994671 | Image heating apparatus | Hideki Suzuki, Michihito Yamazaki, Koichi Okuda | 1999-11-30 |
| 5701182 | Color image forming apparatus and method thereof | Satoshi Akiyama, Takefumi Takubo, Tetsuo Kishida | 1997-12-23 |
| 5676363 | Image forming apparatus with recording medium conveyance control | Tetsuo Kishida, Satoshi Akiyama, Hideki Suzuki, Takefumi Takubo, Nobuyuki Kinoshita | 1997-10-14 |
| 5655185 | Image forming apparatus and method | Satoshi Akiyama, Hideki Suzuki, Takefumi Takubo | 1997-08-05 |
| 5502550 | Image forming apparatus and method | Satoshi Akiyama, Hideki Suzuki, Takefumi Takubo | 1996-03-26 |
| 5455603 | Image forming apparatus with feeder control based on pixel conversion status | Satoshi Akiyama, Takashi Nakahara, Toshio Yoshimoto, Yoshimi Kuramochi, Shunichi Masuda +10 more | 1995-10-03 |
| 5229818 | Image forming apparatus having a high voltage power source for a contact charger | Takashi Nakahara, Shunichi Masuda, Toshio Yoshimoto, Satoshi Akiyama, Yoshimi Kuramochi +1 more | 1993-07-20 |
| 5134427 | Image forming apparatus | Satoshi Akiyama, Takashi Nakahara, Yoshimi Kuramochi, Toshio Yoshimoto, Shunichi Masuda | 1992-07-28 |