Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7858168 | Honeycomb structure and manufacturing method of the same | Toshio Yamada, Takeshi Tokunaga | 2010-12-28 |
| 6723448 | Method of manufacturing honeycomb extrusion die and die manufactured according to this method | Yuji Asai, Keiji Matsumoto | 2004-04-20 |