Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451862 | Process for producing a spherical silica gel | Hachiro Hirano, Masaharu Tanaka, Hiroo Mori | 2002-09-17 |
| 6352653 | Acid component-removing agent, method for producing it and method for removing acid components | Hachiro Hirano, Makoto Yoshida, Hiroaki Noda, Shigeru Sakurai, Masaharu Tanaka | 2002-03-05 |