Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7521864 | Electron device with ring-less getter, method for affixing ring-less getter, and method for activating the same | Yoshihisa Yonezawa, Yukio Ogawa | 2009-04-21 |
| 7397185 | Electron tube and a method for manufacturing same | Yoshihisa Yonezawa, Yukio Ogawa | 2008-07-08 |
| 6979949 | Fluorescent luminous tube with getter mirror film | Yoshihisa Yonezawa, Yukio Ogawa | 2005-12-27 |
| 6838822 | Electron tube with a ring-less getter | Yoshihisa Yonezawa, Yukio Ogawa | 2005-01-04 |