Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7785556 | Method of recovering ammonia | Kazuhiko Amakawa, Fumio Tanaka | 2010-08-31 |
| 7371882 | Reactor for producing a nitrile compound and method for operating the reactor | Shuichi Ueno, Kenichi Nakamura, Fumisada Kosuge | 2008-05-13 |
| 7307181 | Process for producing a nitrile compound | Kenichi Nakamura, Shuji Ebata, Fumio Tanaka | 2007-12-11 |
| 7161021 | Process for producing a polynitrile compound | Kenichi Nakamura, Shuji Ebata, Fumio Tanaka | 2007-01-09 |
| 7119230 | Process for production of xylylenediamine and/or cyanobenzylamine | Kazuhiko Amakawa | 2006-10-10 |
| 6646163 | Method for producing high purity xylylenediamine | Kenichi Nakamura, Kazuhiko Amakawa | 2003-11-11 |
| 6509490 | Method of purifying isophthalonitrile | Susumu Otsuka, Fumisada Kosuge, Kazuhiko Amakawa | 2003-01-21 |
| 6476269 | Method for producing xylylenediamine | Kenichi Nakamura, Susumu {overscore (O)}tsuka, Fumisada Kosuge, Kazuhiko Amakawa | 2002-11-05 |
| 6284893 | Process for producing nitrile compounds | Takashi Okawa, Shuji Ebata, Fumisada Kosuge | 2001-09-04 |