Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8753562 | Production method of fine grain polycrystalline diamond compact | Itsurou Tajima | 2014-06-17 |
| 8728184 | Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool | Kazuo Yamamoto, Tadakazu Ohashi | 2014-05-20 |
| 8657893 | Method for producing sintered cubic boron nitride compact | Itsurou Tajima, Minoru Akaishi | 2014-02-25 |
| 8147573 | Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool | Kazuo Yamamoto, Tadakazu Ohashi | 2012-04-03 |
| 8043533 | Diamond sintered compact having high electrical conductivity and production method thereof | Itsuro Tajima, Osamu Fukunaga | 2011-10-25 |
| 7621974 | Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool | Kazuo Yamamoto, Tadakazu Ohashi | 2009-11-24 |
| 7261753 | Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool | Kazuo Yamamoto, Tadakazu Ohashi | 2007-08-28 |