Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11858856 | Polycrystalline diamond and method for manufacturing same, scribe tool, scribe wheel, dresser, rotating tool, wire drawing die, cutting tool, electrode, and processing method using polycrystalline diamond | Kazuhiro Ikeda, Keiko Arimoto, Hitoshi Sumiya | 2024-01-02 |
| 11814293 | Diamond polycrystal, tool including diamond polycrystal, and method of producing diamond polycrystal | Hitoshi Sumiya | 2023-11-14 |
| 11787699 | Diamond polycrystal and method of producing the same | Hitoshi Sumiya, Yuh Ishida, Kensei Hamaki | 2023-10-17 |
| 11613826 | Synthetic single crystal diamond | Hitoshi Sumiya, Kensei Hamaki, Minori TERAMOTO | 2023-03-28 |
| 11427475 | Polycrystalline diamond and method for manufacturing same, scribe tool, scribe wheel, dresser, rotating tool, orifice for water jet, wire drawing die, cutting tool, electrode, and processing method using polycrystalline diamond | Kazuhiro Ikeda, Keiko Arimoto, Hitoshi Sumiya | 2022-08-30 |
| 11427930 | Diamond polycrystal and tool including same | Hitoshi Sumiya | 2022-08-30 |
| 11421341 | Diamond polycrystal and tool including same | Hitoshi Sumiya | 2022-08-23 |
| 11041791 | Indenter made of polycrystalline diamond, and method and apparatus using the same for evaluating crack initiation load | Kensei Hamaki, Hitoshi Sumiya, Yuh Ishida | 2021-06-22 |
| 10829379 | 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 | Kazuhiro Ikeda, Keiko Arimoto, Hitoshi Sumiya, Takeshi Sato | 2020-11-10 |
| 10562776 | Diamond single crystal, tool, and method for producing diamond single crystal | Keiko Arimoto, Hitoshi Sumiya | 2020-02-18 |
| 10562822 | Cubic boron nitride polycrystalline material, cutting tool, wear resistant tool, grinding tool, and method of manufacturing cubic boron nitride polycrystalline material | Yuh Ishida, Hitoshi Sumiya | 2020-02-18 |
| 10519068 | Cubic boron nitride polycrystal, cutting tool, wear-resistant tool, grinding tool, and method of producing cubic boron nitride polycrystal | Yuh Ishida, Keiko Arimoto, Hitoshi Sumiya | 2019-12-31 |
| 10421129 | Polycrystalline diamond body, cutting tool, wear-resistant tool, grinding tool, and method for producing polycrystalline diamond body | Yuh Ishida, Keiko Arimoto, Hitoshi Sumiya | 2019-09-24 |
| 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 | Kazuhiro Ikeda, Keiko Arimoto, Hitoshi Sumiya, Takeshi Sato | 2018-01-30 |
| 9878914 | Polycrystalline diamond and manufacturing method thereof | Kazuhiro Ikeda, Hitoshi Sumiya | 2018-01-30 |
| 9850135 | Polycrystalline diamond and manufacturing method thereof | Kazuhiro Ikeda, Keiko Arimoto, Hitoshi Sumiya | 2017-12-26 |
| 9714197 | 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 | Kazuhiro Ikeda, Keiko Arimoto, Hitoshi Sumiya, Takeshi Sato | 2017-07-25 |
| 9663371 | Polycrystalline diamond body, cutting tool, wear-resistant tool, grinding tool, and method for producing polycrystalline diamond body | Yuh Ishida, Hitoshi Sumiya | 2017-05-30 |
| 9630853 | Method of preparing polycrystalline diamond | Takeshi Sato, Naohiro Toda, Hitoshi Sumiya, Yutaka Kobayashi | 2017-04-25 |
| 9487446 | Diamond polycrystalline body and method for manufacturing the same, and tool | Takeshi Sato, Kazuhiro Ikeda, Hitoshi Sumiya | 2016-11-08 |
| 9487447 | Diamond polycrystalline body and method for manufacturing the same, and tool | Takeshi Sato, Kazuhiro Ikeda, Hitoshi Sumiya | 2016-11-08 |
| 9415466 | Cutting tool and method and apparatus for manufacturing the same | Kazuo Nakamae, Hiroyuki Murase, Mamoru Ono, Katsuyuki Tanaka, Toshimitsu Sakata +2 more | 2016-08-16 |
| 9403215 | Cutting tool and method for producing same | Natsuo Tatsumi, Hitoshi Sumiya | 2016-08-02 |
| 8784767 | Polycrystalline diamond and method of manufacturing the same | Hitoshi Sumiya, Takeshi Sato, Keiko Arimoto | 2014-07-22 |
| 8124553 | Composite sintered body | Katsumi Okamura, Satoru Kukino, Minori TERAMOTO, Tomohiro Fukaya | 2012-02-28 |