Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312557 | Stabilizing sodium parcabonate by separately spraying coating solutions of boric acid and a silicate | Akira Ito, Yasuo Hiro, Kenji Umehara, Yuji Yoneyama | 1994-05-17 |
| 5219549 | Bleaching detergent composition | Akira Ito, Yasuo Hiro, Kenji Umehara, Yuji Yoneyama | 1993-06-15 |