Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10550300 | Method for producing purified active silicic acid solution and silica sol | Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Kouji Yamaguchi | 2020-02-04 |
| 10400147 | Method for producing purified active silicic acid solution and silica sol | Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Kouji Yamaguchi | 2019-09-03 |
| 9938155 | Method for producing purified alkali silicate aqueous solution and silica sol | Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Kouji Yamaguchi | 2018-04-10 |
| 9108855 | Method for producing purified alkali silicate aqueous solution and silica sol | Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Kouji Yamaguchi | 2015-08-18 |