Issued Patents All Time
Showing 26–50 of 85 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8206671 | Porous composite oxide and production method thereof | Kohei Yoshida, Akio Koyama | 2012-06-26 |
| 8034743 | Method for production of an exhaust gas purification catalyst support and exhaust gas purification catalyst support | Akio Koyama | 2011-10-11 |
| 7966810 | Control device and exhaust purification method of internal combustion engine | Hiroshi Ito, Kotaro Hayashi, Tetsuya Yamashita | 2011-06-28 |
| 7968490 | Method for producing porous substances | Akio Koyama | 2011-06-28 |
| 7915195 | Exhaust gas purifying catalyst and production process thereof | Akio Koyama | 2011-03-29 |
| 7910084 | Compound oxide manufacturing method | Akio Koyama | 2011-03-22 |
| 7867943 | Exhaust gas purifying catalyst, and method for producing the same | — | 2011-01-11 |
| 7820136 | Process for production of compound oxides | — | 2010-10-26 |
| 7790649 | Production process of exhaust gas purifying catalyst | Akio Koyama | 2010-09-07 |
| 7780943 | Production method and apparatus for compound oxide powder | — | 2010-08-24 |
| 7776783 | Catalyst carrier and exhaust gas purification catalyst | Akio Koyama | 2010-08-17 |
| 7758840 | Method for producing compound | Akio Koyama | 2010-07-20 |
| 7678733 | Method for producing heat-resisting compound oxides | Akio Koyama | 2010-03-16 |
| 7608559 | Method for producing heat-resisting compound oxides | Akio Koyama | 2009-10-27 |
| 7604789 | Porous composite oxide and production method thereof | Kohei Yoshida, Akio Koyama | 2009-10-20 |
| 7393808 | Particulate matter-oxidizing material and oxidizing catalyst | Kohei Yoshida | 2008-07-01 |
| 7138353 | Particulate burning catalyst | Tetsuya Yamashita | 2006-11-21 |
| 7111456 | Exhaust emission control apparatus for internal combustion engine | Kohei Yoshida | 2006-09-26 |
| 7081431 | NOx absorbent and absorption reduction-type NOx purifying catalyst | Tetsuya Yamashita, Toshiaki Tanaka | 2006-07-25 |
| 6955041 | Exhaust gas purifying apparatus for internal combustion engine | Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma, Yasuaki Nakano, Kohei Yoshida | 2005-10-18 |
| 6956008 | Storage-reduction type NOx purifying catalyst | Kohei Yoshida, Yasuaki Nakano | 2005-10-18 |
| 6906002 | Absorption reduction-type NOx purifying catalyst | Tetsuya Yamashita, Toshiaki Tanaka | 2005-06-14 |
| 6426316 | Exhaust emission control catalyst for diesel engines | Toshiaki Tanaka, Yoshio Fujimoto, Nobumoto Ohashi, Kazuhiro Ito | 2002-07-30 |
| 6083467 | Exhaust gas purifying catalyst and process for producing the same | Toshiaki Tanaka, Tetsuya Yamashita, Satoshi Iguchi, Katsuhiko Wakabayashi, Masahiro Kishida | 2000-07-04 |
| 6058700 | Device for purifying exhaust gas of engine | Tetsuya Yamashita, Toshiaki Tanaka, Shinya Hirota, Eiji Iwasaki, Kouji Yoshizaki +2 more | 2000-05-09 |