Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12345686 | Fracture toughness testing machine and fracture toughness test method | Hiroyuki Kawada, Kazuki Harada, Kristine Munk Jespersen | 2025-07-01 |
| 6330413 | Image forming apparatus having an LED charge erasing device | Akira Yamamoto, Hiroya Hirose | 2001-12-11 |
| 6122466 | Image forming apparatus | Fumitaka Aoki | 2000-09-19 |
| 5737663 | System for altering a charge applied to a photosensitive drum by a contact charger | Junichi Handa | 1998-04-07 |
| 5574545 | Method for transferring toner from developer carrying member to image bearing member using chains of magnetic particles formed on developer carrying member and contacting image bearing member, and alternating electric field | Hatsuo Tajima, Takashi Saito, Norihisa Hoshika, Hiroshi Tajika, Masaaki Yamaji | 1996-11-12 |
| 5401936 | Heating apparatus using heater having heat-resistive resin layer | Kensaku Kusaka, Akira Yamamoto, Shigeo Kimura | 1995-03-28 |
| 5266774 | Set temperature changeable image fixing apparatus | Shigeo Kimura, Kensaku Kusaka, Akira Yamamoto | 1993-11-30 |
| 5267005 | Heater having stepped portion and heating apparatus using same | Akira Yamamoto, Jun Asai, Kensaku Kusaka, Yoshiaki Kobayashi, Hidekazu Maruta +1 more | 1993-11-30 |
| 5262834 | Image fixing apparatus | Kensaku Kusaka, Shigeo Kimura, Hiroyuki Adachi, Hidekazu Maruta, Akira Yamamoto | 1993-11-16 |
| 5241155 | Image fixing apparatus having linear heat generating layer with variable resistance distribution | Shokyo Koh, Shigeo Kimura, Masahide Kinoshita, Kensaku Kusaka, Hiroyuki Adachi | 1993-08-31 |
| 5162634 | Image fixing apparatus | Kensaku Kusaka, Yoshihiko Suzuki, Shigeo Kimura, Hiroyuki Adachi, Masahide Kinoshita +3 more | 1992-11-10 |
| 5132744 | Heating device using film having conductive parting layer | Hidekazu Maruta, Akira Yamamoto, Kensaku Kusaka, Shigeo Kimura | 1992-07-21 |
| 5083168 | Fixing device and fixing heater for use in the same | Kensaku Kusaka, Yoshihiko Suzuki, Shigeo Kimura, Hiroyuki Adachi, Masahide Kinoshita | 1992-01-21 |
| 5043763 | Image forming apparatus having a heater in contact with a film to fix a toner image | Shokyo Koh, Yoshihiko Suzuki, Shigeo Kimura, Masahide Kinoshita, Kensaku Kusaka +1 more | 1991-08-27 |
| 5027160 | Image fixing apparatus with movable film and means for controlling film position | Tamotsu Okada, Yoshihiko Suzuki, Kanji Yano | 1991-06-25 |
| 4933254 | Method and apparatus for transferring toner from carrying member to image bearing member using chains of magnetic particles | Hatsuo Tajima, Takashi Saito, Norihisa Hoshika, Hiroshi Tajika, Masaaki Yamaji | 1990-06-12 |
| 4916492 | Developer method and apparatus | Norihisa Hoshika, Hatsuo Tajima, Masaaki Yamaji, Hiroshi Tajika | 1990-04-10 |
| 4887131 | Developing apparatus using magnetic particles and toner particles | Masahide Kinoshita, Hatsuo Tajima, Norihisa Hoshika, Hiroshi Tajika | 1989-12-12 |
| 4873551 | Developing apparatus using magnetic carrier under AC field | Hatsuo Tajima, Norihisa Hoshika, Hiroshi Tajika, Masahide Kinoshita | 1989-10-10 |
| 4838200 | Developing apparatus | Hatsuo Tajima | 1989-06-13 |
| 4669852 | Developing apparatus | Hatsuo Tajima, Kimio Nakahata, Hidemi Egami, Fumitaka Kan | 1987-06-02 |
| 4660958 | Developing apparatus | Hidemi Egami, Fumitaka Kan, Hatsuo Tajima, Shunji Nakamura, Kimio Nakahata | 1987-04-28 |
| 4638760 | Developing apparatus | Shunji Nakamura, Fumitaka Kan, Hidemi Egami, Hatsuo Tajima, Kimio Nakahata | 1987-01-27 |
| 4637706 | Developer thin layer forming apparatus | Fumitaka Kan, Hidemi Egami, Hatsuo Tajima, Shunji Nakamura, Kimio Nakahata | 1987-01-20 |
| 4607938 | Method and apparatus for forming a thin layer of developer | Kimio Nakahata, Hatsuo Tajima, Hidemi Egami, Fumitaka Kan, Shunji Nakamura | 1986-08-26 |