Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9433565 | Hydrophilic and highly oil absorbent boron nitride powder, method for manufacturing the same, and cosmetic | Masato Kumagai, Shoichi Hiwasa | 2016-09-06 |
| 9334391 | Sintered spherical BN particles, method of producing the same, and polymer material | Syunji Kasahara, Shoichi Hiwasa | 2016-05-10 |
| 8679429 | Hexagonal boron nitride powder having specific bulk density and residual Fe particles, and method for producing same | Taisei Gohara, Shoichi Hiwasa | 2014-03-25 |
| 4997633 | Water-soluble boron containing impurity reduced hexagonally crystalline boron nitride | Ryoji Uchimura, Takeshi Ogasawara | 1991-03-05 |
| 4853196 | Water-soluble boron containing impurity reduced hexagonally crystalline boron nitride and process for production thereof | Ryoji Uchimura, Takeshi Ogasawara | 1989-08-01 |
| 4784978 | Hexagonal boron nitride powder having excellent sinterability and a method for the preparation thereof | Takeshi Ogasawara, Toshimitsu Koitabashi, Kimiaki Sasaki | 1988-11-15 |