Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6984669 | Fluorinated cation exchange membrane and electrolytic soda process | Takuo Nishio, Yoshihiko Saito | 2006-01-10 |
| 6517699 | Method for producing polysulfides by means of electrolytic oxidation | Tatsuya Andoh, Junji Tanaka, Keigo Watanabe, Yasunori Nanri | 2003-02-11 |
| 6264819 | Method for producing polysulfide by electrolytic oxidation | Tatsuya Andoh, Junji Tanaka | 2001-07-24 |
| 5972197 | Method for producing polysulfides by electrolytic oxidation | Tatsuya Andoh, Eiji Endoh | 1999-10-26 |
| 5716504 | Cation exchange membrane for electrolysis and process for producing potassium hydroxide of high purity | Yoshihiko Saito, Haruhisa Miyake | 1998-02-10 |
| 5264100 | Fluorine-containing cation exchange membrane for electrolysis having a protruding porous base reinforcing material on one side thereof | Yoshiaki Higuchi, Yoshihiko Saitoh | 1993-11-23 |
| 5149403 | Fluorine-containing cation exchange membrane for electrolysis and process for producing alkali metal hydroxide by using the same | Yoshiaki Higuchi, Yoshihiko Saito, Kohji Suzuki | 1992-09-22 |