Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10683253 | Method for producing high-purity terephthalic acid | Goh NAKAMURA, Hideaki Fujita, Kotaro Murakami | 2020-06-16 |
| 10385001 | Method of producing terephthalic acid | Goh NAKAMURA, Hideaki Fujita, Kotaro Murakami | 2019-08-20 |
| 8759588 | Process for producing xylylenediamine | Shinichi Nagao, Tatsuyuki Kumano, Kenji Nakaya, Kinji Kato | 2014-06-24 |
| 7626057 | Production of xylylenediamines | Tatsuyuki Kumano, Kinji Kato, Kenji Nakaya | 2009-12-01 |
| 7625543 | Production process for carbonized product and carbonized product obtained by the same process | Koichi Kanno, Takahiro Ojima, Takashi Kojima | 2009-12-01 |
| 6642412 | Process for producing a high purity aromatic polycarboxylic acid | Masayoshi Hayashi, Shinichi Nagao, Jitsuo Oishi, Akio Hashimoto | 2003-11-04 |
| 6455731 | Process for producing a high purity aromatic polycarboxylic acid | Masayoshi Hayashi, Shinichi Nagao, Jitsuo Oishi, Akio Hashimoto | 2002-09-24 |
| 6452047 | Process for producing highly pure aromatic polycarboxylic acid | Masayoshi Hayashi, Akio Hashimoto, Makoto Takagawa | 2002-09-17 |
| 6072098 | Process for producing highly pure 2,6-dimethylnaphthalene | Makoto Takagawa | 2000-06-06 |
| 5948949 | Process for producing 2,6-dimethylnaphthalene | Makoto Takagawa, Kuniaki Ageishi, Ko Kedo | 1999-09-07 |
| 5859294 | Process for the production of high-purity naphthalenedicarboxylic acid | Akio Hashimoto, Kenichi Nakamura, Makoto Takagawa | 1999-01-12 |
| 5495060 | Method for isomerizing dimethylnaphthalene | Makoto Takagawa, Kazuo Nagagata | 1996-02-27 |
| 5481055 | Method for isomerizing dimethylnaphthalene | Makoto Takagawa, Takayo Sasaki | 1996-01-02 |