Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6598453 | Tooth rolling flat dies and method for forming teeth | Takahiro Kumagai, Soiti Kakutani, Masaru Sumitani | 2003-07-29 |
| 6567285 | Switching power supply unit | Hisanori Cho, Masahiko Hirokawa | 2003-05-20 |
| 6532160 | Switching power supply | Masahiko Hirokawa, Tomomi Yamada | 2003-03-11 |