Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11942755 | Optical transmission system and filter penalty reduction method | Kohei Saito, Takashi Kotanigawa | 2024-03-26 |
| 11424824 | OSNR spectrum estimation apparatus, OSNR spectrum estimation method, and program | Hiroki Kawahara, Kohei Saito, Takeshi Seki | 2022-08-23 |
| 11329445 | Optical amplifier, optical transmission system, and optical cable failure part measurement method | Takashi Kotanigawa, Kohei Saito | 2022-05-10 |
| 11206084 | Dispersion compensation designing device, dispension compensation method, optical transmission system, and program | Minoru Yamaguchi, Kohei Saito | 2021-12-21 |
| 10469019 | Motor control system, motor control apparatus, method for controlling motor, and state estimator | — | 2019-11-05 |
| 9984046 | Font delivery system and font delivery method | Fujio Ikemoto, Takafumi Omuro | 2018-05-29 |
| 8436570 | Motor driving system, motor controller, and safety function expander | Kunimasa Ando, Keisei Inoki | 2013-05-07 |
| 8372574 | Method of producing electrostatic latent image developing toner | Hideo Maehata, Yukihiro Ishii, Masaaki Suwabe, Makiko Nakano, Kazuhiko Yanagida +1 more | 2013-02-12 |
| 7288351 | Magenta toner for developing electrostatic images, process for production thereof, developer and image-forming method | Hidekazu Yaguchi, Yasuo Matsumura, Kazuhiko Yanagida, Manabu Serizawa, Shigeru Seitoku | 2007-10-30 |
| 7236728 | Developing device and image formation device | Akihiko Noda, Hirotaka Matsuoka | 2007-06-26 |
| 7166401 | Toner for electrophotography, image-forming method, image-forming apparatus and toner cartridge | Hiroyuki Tanaka, Shuji Sato, Yosuke Tsurumi, Manabu Serizawa, Shigeru Seitoku +1 more | 2007-01-23 |
| 7094514 | Image forming method | Manabu Serizawa, Hidekazu Yaguchi, Kazuhiko Yanagida, Shigeru Seitoku, Yasuo Matsumura +2 more | 2006-08-22 |
| 7018764 | Toner for developing electrostatic images, process for preparing toner for developing electrostatic images, developer for developing electrostatic images and images forming method | Yasuo Matsumura, Kazuhiko Yanagida, Manabu Serizawa, Hidekazu Yaguchi, Takahisa Fujii +1 more | 2006-03-28 |
| 6942953 | Image forming method | Manabu Serizawa, Hidekazu Yaguchi, Hiroyuki Tanaka, Shigeru Seitoku, Kazuhiko Yanagida +2 more | 2005-09-13 |
| 6555282 | Toner for developing electrostatic latent image, image forming method and image forming apparatus using the same | Hiroyoshi Okuno, Akira Matsumoto, Teigen Lee, Yuusaku Shibuya, Yutaka Sugizaki | 2003-04-29 |
| 6468707 | Image-forming process and image-forming apparatus | Hiroyoshi Okuno, Akira Matsumoto, Yusaku Shibuya, Yutaka Sugizaki, Masahiro Okita +1 more | 2002-10-22 |
| 6279710 | Electromagnetic clutch | — | 2001-08-28 |
| 6276506 | Electromagnetic clutch | — | 2001-08-21 |
| 5952908 | Coil bobbin and an exciting coil assembly | — | 1999-09-14 |
| 5909787 | Electromagnetic clutch | — | 1999-06-08 |
| 5571651 | Capsule toner | Yoshihiro Inaba, Koichi Takashima | 1996-11-05 |
| 5439773 | Electrically-conductive toner, process for preparation of same, and process for formation of image using same | Izuru Matsui, Kazuya Furuta, Koichi Takashima | 1995-08-08 |
| 5385802 | Process for producing toner | Yoshihiro Inaba, Koichi Takashima | 1995-01-31 |
| 5336582 | Electrophotographic image formation comprising an arylamine in a charge transport layer and an encapsulated toner | Ichiro Takegawa, Keiko Ariie, Tomoo Kobayashi | 1994-08-09 |
| 5334480 | Capsule toner | Yoshihiro Inaba, Koichi Takashima, Izuru Matsui | 1994-08-02 |