Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6538246 | Variable resistance circuit, operational amplification circuit, semiconductor integrated circuit, time constant switching circuit and waveform shaping circuit | Takeshi Otsuka, Kuniyuki Tani | 2003-03-25 |
| 6512643 | Photoselective absorbing filter and color display equipped with said filter | Yoshinori Kawasaki | 2003-01-28 |