Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6294693 | Production process for ether carboxylate salt | Yasutaka Sumida, Mitsuhiro Kitajima | 2001-09-25 |
| 6103686 | Chelating composition | Yasutaka Sumida, Masatoshi Shimomura, Shuichi Okuno, Tadanobu Morimoto, Masanao Morita +1 more | 2000-08-15 |
| 6063302 | Method for handling iminocarboxylic acid salt | Yasutaka Sumida, Yuichi Kita | 2000-05-16 |
| 5905160 | Method for production of epoxy compound and hydroxy iminodisuccinic acid | Masatoshi Shimomura, Yuichi Kita | 1999-05-18 |
| 5801277 | Solid catalyst for etherification reaction and production process for ether compound using this catalyst | Yasutaka Sumida, Yuichi Kita, Mitsuhiro Kitajima, Yoshiyuki Takahashi, Kazuo Sagi | 1998-09-01 |
| 5001245 | Process for producing metallic salt of ethercarboxylic acid | Masao Nakano, Yusei Nagamura, Akio Fukui, Yoichi Nakagawa | 1991-03-19 |