Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7541742 | Colored glass for lighting, colored glass bulb and method for producing thereof | Yukio Takagi | 2009-06-02 |
| 7049255 | Colored glass for lighting, colored glass bulb and method for producing thereof | Yukio Takagi | 2006-05-23 |