Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661238 | Abnormality diagnosis method and apparatus for separable transformer | Yasunori Habiro, Dongzhi Jin, Fumihiko Abe, Hajime Mochizuki | 2003-12-09 |
| 6618116 | Optical head device and a diffraction element suitable for the device, and a method of manufacturing the diffraction element and the optical head device | Hiromasa Sato | 2003-09-09 |