Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6673733 | Method for regenerating heteropolyacid catalyst and method for producing methacrylic acid | Naohiro Fukumoto, Naomasa Kimura, Hiroto Kasuga | 2004-01-06 |
| 6664206 | Method for reactivating catalyst for methacrylic acid preparation | Hiroto Kasuga | 2003-12-16 |
| 6624326 | Method for preparing heteropolyacid catalyst and method for producing methacrylic acid | Hiroto Kasuga, Kaori Nakatani | 2003-09-23 |
| 6458740 | Method for preparing heteropolyacid catalyst and method for producing methacrylic acid | Hiroto Kasuga, Kaori Nakatani | 2002-10-01 |
| 6410786 | Process for producing methacrylic acid | Hideo Onodera, Naomasa Kimura | 2002-06-25 |
| 6143691 | Purifying catalyst for exhaust gas from internal combustion engine | Shigeyoshi Taniguchi, Takeshi Matsumoto | 2000-11-07 |
| 5260249 | Catalyst for purifying automotive exhaust gas | Hideyuki Baba, Kazuo Tsuchitani, Tomohisa Ohata | 1993-11-09 |
| 4904633 | Catalyst for purifying exhaust gas and method for production thereof | Tomohisa Ohata, Kazuo Tsuchitani, Shinya Kitaguchi | 1990-02-27 |
| 4708946 | Catalyst for purifying exhaust gas | Tomohisa Ohata, Sadao Terui | 1987-11-24 |