Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6591891 | Method for making sand covered with bentonite, the sand, and a method for recycling molding sand for a mold using the sand covered by bentonite | Ryoji Kanayama, Yasunori Yoshida, Kuniyasu Mori, Kazuo Sugimoto | 2003-07-15 |