Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657166 | Silicon nitride sintered material and production process thereof | Kouji Funaki, Katsura Matsubara, Masaya Ito | 2003-12-02 |
| 6621052 | Silicon nitride-tungsten carbide composite sintered material, process for preparing the same and glow plug | Katsura Matsubara, Masaya Ito | 2003-09-16 |
| 6563089 | Silicon nitride—tungsten carbide composite sintered material, production process therefor, and glow plug comprising the same | Katsura Matsubara, Masaya Ito | 2003-05-13 |