Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6365314 | Toner for developing electrostatic image, image forming method and process cartridge | Takaaki Kohtaki, Manabu Ohno, Makoto Unno, Yushi Mikuriya, Nobuyuki Okubo +2 more | 2002-04-02 |
| 6238834 | Magnetic toner for developing electrostatic images, process for producing it, image forming method and process cartridge | Osamu Tamura, Shunji Suzuki, Yoshihiro Ogawa | 2001-05-29 |
| 6187495 | Yellow toner, process for producing the tower and image forming method using the toner | Tatsuhiko Chiba, Kazuo Yoshinaga, Satoshi Yasuda, Hiroaki Kawakami, Ryoichi Fujita +1 more | 2001-02-13 |
| 6090515 | Toner for developing electrostatic image, image forming method and process cartridge | Takaaki Kohtaki, Manabu Ohno, Makoto Unno, Yushi Mikuriya, Nobuyuki Okubo +2 more | 2000-07-18 |
| 6060202 | Toner for developing electrostatic images image forming method and process cartridge | Yoshihiro Ogawa, Keita Nozawa, Shunji Suzuki | 2000-05-09 |
| 6002895 | Process cartridge | Takashige Kasuya, Hiroyuki Suematsu, Hiroshi Yusa, Takakuni Kobori, Masaichiro Katada | 1999-12-14 |
| 5976752 | Toner and image forming method | Satoshi Matsunaga, Yuichi Mizoh, Keita Nozawa, Minekazu Endo, Tadashi Doujo +2 more | 1999-11-02 |
| 5858593 | Magnetic toner, apparatus unit and image forming method | Osamu Tamura, Nobuyuki Okubo, Shunji Suzuki, Yoshihiro Ogawa, Keita Nozawa | 1999-01-12 |
| 5802428 | Images forming apparatus and developer for developing electrostatic images | Manabu Ohno, Hisayuki Ochi, Tetsuhito Kuwashima, Hiroyuki Suematsu, Eiichi Imai +3 more | 1998-09-01 |
| 5750302 | Magnetic toner for developing electrostatic image, image forming process, and process cartridge | Yoshihiro Ogawa, Osamu Tamura, Nobuyuki Okubo, Shunji Suzuki | 1998-05-12 |
| 5736288 | Toner for developing electrostatic images, process cartridge, and image forming method | Takashige Kasuya, Hiroyuki Suematsu, Hiroshi Yusa, Takakuni Kobori, Masaichiro Katada | 1998-04-07 |
| 5663026 | Magnetic toner, process cartridge and image forming method | Takashige Kasuya, Hiroyuki Suematsu, Hiroshi Yusa, Takakuni Kobori, Masaichiro Katada | 1997-09-02 |
| 5534981 | Image forming apparatus and developer for developing electrostatic images | Manabu Ohno, Hisayuki Ochi, Tetsuhito Kuwashima, Hiroyuki Suematsu, Eiichi Imai +3 more | 1996-07-09 |
| 5510223 | Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus | Tsutomu Kukimoto, Hiroshi Yusa, Tsuyoshi Takiguchi, Eiichi Imai, Tetsuya Kuribayashi +2 more | 1996-04-23 |
| 5464722 | Production of toner for developing electrostatic images | Hiroshi Yusa, Takakuni Kobori | 1995-11-07 |
| 5447815 | Developer for developing electrostatic image and image forming method | Masayoshi Kato, Hiroshi Yusa | 1995-09-05 |
| 5424810 | Magnetic toner, magnetic developer, apparatus unit, image forming apparatus and facsimile apparatus | Hiroyuki Suematsu, Masayoshi Kato, Hiroshi Yusa, Takakuni Kobori | 1995-06-13 |
| 5422707 | Toner for developing electrostatic images, detachable apparatus, image forming apparatus and facsimile apparatus | Tsuyoshi Takiguchi, Tsutomu Kukimoto, Hiroshi Yusa, Tetsuhito Kuwashima | 1995-06-06 |
| 5392103 | Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus | Tsutomu Kukimoto, Hiroshi Yusa, Tsuyoshi Takiguchi, Eiichi Imai, Tetsuya Kuribayashi +2 more | 1995-02-21 |
| 5338638 | Toner for developing electrostatic image and process for production thereof | Kiyoko Tsuchiya, Masayoshi Kato, Tsutomu Kukimoto, Hiroshi Yusa | 1994-08-16 |
| 5319424 | Developer for developing electrostatic image, image forming method, electrophotographic apparatus, apparatus unit, and facsimile apparatus | Masayoshi Kato, Tsutomu Kukimoto, Hiroshi Yusa, Kiyoko Tsuchiya | 1994-06-07 |
| 5307122 | Image forming apparatus apparatus unit facsimile apparatus and developer comprising hydrophobic silica fine powder for developing electrostatic images | Manabu Ohno, Hisayuki Ochi, Tetsuhito Kuwashima, Hiroyuki Suematsu, Eiichi Imai +3 more | 1994-04-26 |
| 5270770 | Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus | Tsutomu Kukimoto, Hiroshi Yusa, Tsuyoshi Takuguchi, Eiichi Imai, Tetsuya Kuribayashi +2 more | 1993-12-14 |
| 5270143 | Developer for developing electrostatic image, image forming method, electrophotographic apparatus, apparatus unit, and facsimile apparatus | Masayoshi Kato, Tsutomu Kukimoto, Hiroshi Yusa, Kiyoko Tsuchiya | 1993-12-14 |
| 5262267 | Magnetic developer, image forming method and image forming apparatus | Tsuyoshi Takiguchi, Tetsuya Kuribayashi, Tsutomu Kukimoto, Hiroshi Yusa, Eiichi Imai | 1993-11-16 |