Issued Patents All Time
Showing 26–50 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8258618 | Power semiconductor module | Yoshiko Obiraki, Takeshi Oi | 2012-09-04 |
| 8253236 | Power semiconductor device | Takeshi Oi, Yoshiko Obiraki, Osamu Usui, Yasushi Nakayama | 2012-08-28 |
| 7849706 | Indoor unit of an air conditioner | Masanao Yasutomi, Mikio Ito | 2010-12-14 |
| 7630794 | Isolated operation detecting method, control apparatus for detecting isolated operation for distributed power supply | Masao Mabuchi, Yasuhiro Tsubota, Nobuyuki Toyoura, Shinichi Hosomi, Masaya Kato +1 more | 2009-12-08 |
| 7038143 | Wiring board, fabrication method of wiring board, and semiconductor device | Shigeru Utsumi, Hirofumi Fujioka, Hideki Tsuruse, Taichi Kase, Takeshi Muraki | 2006-05-02 |
| 6807072 | Electric power conversion device with push-pull circuitry | Katsutaka Tanabe, Nobuyuki Toyoura, Masao Mabuchi, Kotaro Nakamura, Yuji Tsurukawa +1 more | 2004-10-19 |
| 6664127 | Method of manufacturing multi-layer printed wiring board | Satoshi Yanaura, Yasuo Kawashima, Takeshi Muraki | 2003-12-16 |
| 6629362 | Method of manufacturing a circuit print board | Takashi Kobayashi, Kazuo Funahashi, Hideki Tsuruse | 2003-10-07 |
| 6451710 | Method of manufacturing multi-layer printed wiring board | Satoshi Yanaura, Yasuo Kawashima, Takeshi Muraki | 2002-09-17 |
| 6108511 | Toner collecting and reusing device for use in an image forming apparatus and a method thereof | Akio Kutsuwada, Tetsuo Yamaoka, Keisuke Hayashi, Shinji Tamaki | 2000-08-22 |
| 5983059 | Recyclable toner container for an image forming apparatus | Yasushi Akiba, Masumi Ikesue, Masakazu Nakada, Hiroyasu Itou | 1999-11-09 |
| 5822664 | Developing machine which uses a developing agent including a toner and magnetic particles | Hajime Oyama, Yasushi Akiba, Kiyonori Tsuda | 1998-10-13 |
| 5805965 | Developing device for an image forming apparatus having developer distribution features | Kiyonori Tsuda, Hajime Oyama, Yasushi Akiba | 1998-09-08 |
| 5771429 | Developing device capable of automatic toner content control | Hajime Oyama, Kiyonori Tsuda, Yasushi Akiba | 1998-06-23 |
| 5771426 | Developing device using a toner and carrier mixture | Kiyonori Tsuda, Hajime Oyama, Fumihiro Sasaki, Satoshi Mochizuki, Takahisa Kato | 1998-06-23 |
| 5758241 | Developing device for an image forming apparatus | Hajime Oyama, Kiyonori Tsuda, Yasushi Akiba | 1998-05-26 |
| 5661223 | Composition of phenolic resin-modified epoxy resin and straight chain polymer | Mitsuhiro Nonogaki, Takumi Kikuchi, Takashi Takahama, Hiroyuki Nakajima, Michio Futakuchi | 1997-08-26 |
| 5659860 | Developing device for an image forming apparatus and toner cartridge | Fumihiro Sasaki, Satoshi Mochizuki, Hidefumi Gohhara, Megumi Sakakura, Hajime Oyama +2 more | 1997-08-19 |
| 5555469 | Image forming apparatus having toner recycling device with electrostatic conveyor | Fumihiko Ishikawa, Tsukuru Kai | 1996-09-10 |
| 5416568 | Developing unit for an image forming apparatus | Shigeru Yoshiki, Tomoji Ishikawa, Tsukuru Kai | 1995-05-16 |
| 5255059 | Image forming apparatus | Tsukuru Kai, Hidetoshi Yano, Shigeru Yoshiki, Tsuyoshi Deki | 1993-10-19 |
| 5235384 | Image forming apparatus with replaceable process units | Tomoji Ishikawa, Tsukuru Kai, Hisashi Ishijima, Makoto Obu, Hidetoshi Yano | 1993-08-10 |
| 5109254 | Developing apparatus | Tsukuru Kai, Masaru Tanaka, Tomoji Ishikawa | 1992-04-28 |
| 5091481 | Composition of polyepoxy compounds, linear polymer and aromatic diamine | Hiroyuki Nakajima, Takashi Takahama, Fumiyuki Miyamoto, Toshio Isooka, Yoshihiro Maruyama +1 more | 1992-02-25 |
| 5077584 | Toner supply device for electrophotographic equipment | Masaru Tanaka | 1991-12-31 |