Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669852 | Separation method of goethite-containing red mud | Isao Ishikawa, Haruo Washikita, Koyuki Mesuda | 2003-12-30 |
| 6528028 | Process for treating bauxite in which a desilication product and an insoluble residure are separately precipitated | Yoshiyuki Takenaka, Isao Ishikawa | 2003-03-04 |