Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1071887 | Composite seal for semiconductor manufacturing device | Nobuhiro Yoshida | 2025-04-22 |
| 8215127 | Diamond having two-stage pavilion | Yoshinori Kawabuchi, Akira Itoh | 2012-07-10 |
| 7249471 | Cut design of diamonds providing plenty of visual-perceptible reflection for ornamental use and observation method thereof | Yoshinori Kawabuchi | 2007-07-31 |
| 7225641 | Cut design of diamonds providing plenty of visual-perceptible reflection for ornamental use and observation method thereof | Yoshinori Kawabuchi | 2007-06-05 |
| 6818280 | Rectangular brilliant-cut diamond | Akira Itoh, Yoshinori Kawabuchi | 2004-11-16 |
| 6694778 | Cut design of diamond for ornamental use | Yoshinori Kawabuchi | 2004-02-24 |