Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4774068 | Method for production of mullite of high purity | Tadashi Hiraiwa, Kunihiro Miyazaki | 1988-09-27 |
| 4686774 | Method for dehydration of a composition of a fine powder and water | Tadashi Hiraiwa | 1987-08-18 |