Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9878914 | Polycrystalline diamond and manufacturing method thereof | Katsuko Yamamoto, Hitoshi Sumiya | 2018-01-30 |
| 9878956 | Polycrystalline diamond and manufacturing method thereof, scribe tool, scribing wheel, dresser, rotating tool, orifice for water jet, wiredrawing die, cutting tool, and electron emission source | Keiko Arimoto, Katsuko Yamamoto, Hitoshi Sumiya, Takeshi Sato | 2018-01-30 |