Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7976901 | Polishing sheet and manufacturing method of elastic plastic foam sheet | Tomohiro Iwao | 2011-07-12 |
| 7220475 | Polishing sheet and polishing work method | Hidenori Takeda | 2007-05-22 |