Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657071 | Process for producing &agr;-sulfo-fatty acid alkyl ester salt | Tetsuo Tano, Masahisa Yoshiya, Taku Nishio, Seiji Matoba | 2003-12-02 |
| 4404143 | Process for producing high concentration solution of salt of alpha-sulfo fatty acid ester | Shizuo Sekiguchi, Toshiaki Ogoshi | 1983-09-13 |
| 4248793 | Process for the production of internal olefin sulfonate | Shizuo Sekiguchi, Katsumasa Nagano, Kyozo Kitano | 1981-02-03 |
| 4185034 | Bleaching olefin sulfonates with phosphate and peroxide | Kazuo Yamamoto, Shizuo Sekiguchi | 1980-01-22 |