Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9074278 | Carbon film laminate | Masataka Hasegawa, Masatou Ishihara, Yoshinori Koga, Jaeho Kim, Sumio Iijima | 2015-07-07 |
| 8691364 | Laminate, and polishing material and grinding material using the same, and method for producing the laminate | Masataka Hasegawa, Masatou Ishihara, Yoshinori Koga | 2014-04-08 |
| 8501276 | Carbon film | Yoshinori Koga, Masataka Hasegawa, Sumio Iijima, Masatou Ishihara | 2013-08-06 |
| 8007909 | Carbon film | Yoshinori Koga, Masataka Hasegawa, Sumio Iijima, Masatou Ishihara | 2011-08-30 |
| 5712029 | Friction material | Seiji Suzuki, Hidekazu Kubono | 1998-01-27 |
| 4705817 | Method of preventing the rust-forming and adherence between friction material and opposite friction member | Susuma Wada | 1987-11-10 |
| 4359765 | Magnetizing system | Katsura Mimura | 1982-11-16 |