Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8867527 | Speech processing peripheral device and IP telephone system | Hiromi Aoyagi, Shinji Usuba, Hiroshi Kuboki | 2014-10-21 |
| 8189796 | Voice response system | Shinji Usuba | 2012-05-29 |
| 7877871 | Method of manufacturing an electronic circuit formed on a substrate | Hideo Aoki, Naoko Yamaguchi, Chiaki Takubo, Toshiaki Yamauchi, Koji Imamiya | 2011-02-01 |
| 7610938 | Cylindrical rod and method for manufacturing the same | Itaru Yanokura, Norio Nomura, Nagamitsu Takashima | 2009-11-03 |
| 7433637 | Image forming apparatus and method of manufacturing electronic circuit using the same | Hideo Aoki, Naoko Yamaguchi, Chiaki Takubo, Toshiaki Yamauchi, Koji Imamiya | 2008-10-07 |
| 7067398 | Method of producing electronic circuit and electronic circuit | Hideo Aoki, Naoko Yamaguchi, Chiaki Takubo, Toshiaki Yamauchi, Koji Imamiya | 2006-06-27 |
| 6011634 | Portable facsimile equipment | Masayoshi Aihara, Toshiyuki Yokochi, Akira Nakano, Masaru Yamamura, Yasuaki Hashimoto +1 more | 2000-01-04 |
| 5819138 | Electrophotographic apparatus having a device for removing paper dust from the photoreceptor | — | 1998-10-06 |
| 5763648 | Process for producing an aromatic carboxylic acid | Takashi KOMAYA, Katsunori Fukuda | 1998-06-09 |
| 5692232 | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device | Yoshiaki Okano, Hirotaka Fukuyama, Kouichirou Satou, Tetsuya Nakamura, Satoshi Katagata +4 more | 1997-11-25 |
| 5669053 | Roller transfer device and transfer roller manufacturing method | Yoshiaki Okano | 1997-09-16 |
| 5655178 | Electrophotographic apparatus having cleaning device and developing device configured to prevent toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Tetsuya Nakamura, Kouichirou Satou, Yoshiaki Okano +6 more | 1997-08-05 |
| 5600417 | Developing device for electrophotographic apparatus | Michihisa Iguchi, Seiji Arai, Yoshiaki Okano, Chinobu Sakai, Hirotaka Fukuyama +4 more | 1997-02-04 |
| 5537192 | Transfer roller and toner for electrophotographic apparatus | Michihisa Iguchi, Seiji Arai, Yoshiaki Okano, Chinobu Sakai, Hirotaka Fukuyama +4 more | 1996-07-16 |
| 5488462 | Electrophotographic apparatus having developing device with seals for preventing toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Tetsuya Nakamura, Kouichirou Satou, Yoshiaki Okano +6 more | 1996-01-30 |
| 5412364 | Toner pack and development device for use in electrophotographic apparatus | Michihisa Iguchi, Seiji Arai, Yoshiaki Okano, Chinobu Sakai, Hirotaka Fukuyama +4 more | 1995-05-02 |
| 5289237 | Developing device and method for locating a toner restricting member at a developing device | Takashi Ishikawa | 1994-02-22 |
| 5283621 | Fixing apparatus and method of supporting a roller shaft of the fixing apparatus | — | 1994-02-01 |
| 5188057 | Developing apparatus | Masaaki Ishikawa, Michihisa Iguchi, Yasuo Fujii, Tetsuya Nakamura, Hirotaka Fukuyama +7 more | 1993-02-23 |
| 4931876 | Electrophotographic recording apparatus for a facsimile device | — | 1990-06-05 |
| 4772748 | Process for producing highly pure terephthalic acid | Yoshiaki Izumisawa | 1988-09-20 |
| 4593122 | Process for preparing terephthalic acid by the catalytic oxidation with air of p-xylene in a water containing acetic acid solvent | Yoshiaki Izumisawa | 1986-06-03 |
| 4562285 | Process for producing terephthalic acid | Yoshiaki Izumisawa | 1985-12-31 |
| 4560793 | Process for producing terephthalic acid | Yoshiaki Izumisawa | 1985-12-24 |
| 4329493 | Process for producing terephthalic acid | Yoshiaki Izumisawa | 1982-05-11 |