Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12121874 | Water purifying material having iron as main component, and method for manufacturing same | Shigemi Kodama, Shigeo Kimura | 2024-10-22 |
| 6337061 | Method for reclaiming metal sulfate-containing waste sulfuric acid | Nobuyoshi Iyatomi | 2002-01-08 |
| 5531906 | Process for treatment of sodium hydroxide waste liquor containing aluminum | Susumu Takayama, Nobuyoshi Iyatomi, Minoru Orikasa | 1996-07-02 |
| 5489423 | Process for recovering sulfuric acid from metallic sulfate-containing exhaust sulfuric acid | Nobuyoshi Iyatomi | 1996-02-06 |
| 5393387 | Method for treating etchant | Masaaki Iosaki, Masao Shibasaki | 1995-02-28 |