Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7740998 | Positively chargeable developer | Katsuhisa Yamazaki, Daisuke Yoshiba | 2010-06-22 |
| 7700254 | Toner with specified amounts of the THF-soluble matter having certain intrinsic viscosity | Syuhei Moribe, Katsuhisa Yamazaki, Daisuke Yoshiba, Hirata Junko, Takashige Kasuya | 2010-04-20 |
| 7537877 | Toner used in electrophotography having toner particles and silica powder | Daisuke Yoshiba, Katsuhisa Yamazaki, Syuhei Moribe, Junko Nishiyama, Shuichi Hiroko +1 more | 2009-05-26 |
| 7147981 | Toner | Hiroyuki Fujikawa, Takakuni Kobori, Masaaki Taya | 2006-12-12 |
| 6670087 | Toner, image-forming apparatus, process cartridge and image forming method | Hiroyuki Fujikawa, Masaaki Taya, Takakuni Kobori | 2003-12-30 |
| 6653036 | Magnetic toner and image forming method | Hirohide Tanikawa, Takakuni Kobori, Hiroyuki Fujikawa | 2003-11-25 |
| 6541174 | Method using toner and developer for developing electrostatic image | Hirohide Tanikawa, Toshiaki Nakahara, Keita Nozawa, Kazuyoshi Hagiwara, Minoru Shimojo +2 more | 2003-04-01 |
| 6373795 | Apparatus for reproducing an optical disc | Kaoru Takemasa, Susumu Yoshida, Toru Suzuki, Kenjiro Ido, Kenji Uchiyama +4 more | 2002-04-16 |
| 6235441 | Positively chargeable toner, image forming method and image forming apparatus | Hirohide Tanikawa, Takakuni Kobori, Hiroyuki Fujikawa | 2001-05-22 |
| 6203959 | Toner | Hirohide Tanikawa, Takakuni Kobori, Hiroyuki Fujikawa | 2001-03-20 |
| 6187496 | Toner and developer for developing electrostatic image, process for production thereof and image forming method | Hirohide Tanikawa, Toshiaki Nakahara, Keita Nozawa, Kazuyoshi Hagiwara, Minoru Shimojo +2 more | 2001-02-13 |
| 6185164 | Disk reproducing apparatus | Kaoru Takemasa, Susumu Yoshida, Toru Suzuki, Kenjiro Ido | 2001-02-06 |
| 6156471 | Toner and image forming method | Takakuni Kobori, Hirohide Tanikawa, Hiroyuki Fujikawa | 2000-12-05 |
| 6120961 | Toner for developing electrostatic images | Hirohide Tanikawa, Tsutomu Onuma, Hiroyuki Fujikawa | 2000-09-19 |
| 6077638 | Toner and developer for developing electrostatic image, process for production thereof and image forming method | Hirohide Tanikawa, Toshiaki Nakahara, Keita Nozawa, Kazuyoshi Hagiwara, Minoru Shimojo +2 more | 2000-06-20 |
| 6020102 | Positive-chargeable toner, image forming method and apparatus unit | Hirohide Tanikawa, Tsutomu Onuma, Hiroyuki Fujikawa | 2000-02-01 |
| 5986981 | Disk reproducing apparatus housing a plurality of disks | Kaoru Takemasa, Susumu Yoshida, Kenjiro Ido, Toru Suzuki | 1999-11-16 |
| 5982720 | Disk reproducing apparatus | Kaoru Takemasa, Susumu Yoshida, Toru Suzuki, Kenjiro Ido | 1999-11-09 |
| 5968701 | Toner and image forming method | Tsutomu Onuma, Hirohide Tanikawa, Hiroyuki Fujikawa | 1999-10-19 |
| 5716746 | Magnetic toner and process for producing magnetic toner | Yushi Mikuriya, Toshiaki Nakahara, Masayoshi Shimamura, Kuniko Kobayashi, Kazuyoshi Hagiwara | 1998-02-10 |
| 5547796 | Developer containing insulating magnetic toner flowability-improving agent and inorganic fine powder | Takaaki Kohtaki, Masaaki Taya | 1996-08-20 |
| 5520719 | Process for producing sintered iron ore product | Yoshio Okuno | 1996-05-28 |
| 5447813 | Toner for developing electrostatic image and image forming method | Kazuyoshi Hagiwara, Toshiaki Nakahara, Minoru Shimojo, Kiyoshi Mizoe | 1995-09-05 |
| 5436701 | Image forming method, image forming apparatus and apparatus unit | Minoru Shimojo, Toshiaki Nakahara, Kazuyoshi Hagiwara, Kiyoshi Mizoe | 1995-07-25 |
| 5415967 | Process for producing toner | Kiichiro Sakashita, Masaki Uchiyama, Kiyoshi Mizoe | 1995-05-16 |