Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D580562 | Filament for lamp | Naotaka Hashimoto, Toshiyasu Kojima, Taku Ikeda | 2008-11-11 |
| D579129 | Filament for lamp | Naotaka Hashimoto, Toshiyasu Kojima, Taku Ikeda | 2008-10-21 |
| D578674 | Filament for lamp | Naotaka Hashimoto, Toshiyasu Kojima, Taku Ikeda | 2008-10-14 |