Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6792121 | Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit | Yasuyuki Koyama | 2004-09-14 |
| 6756738 | Organic EL drive circuit and organic EL display device using the same | Jun Maede | 2004-06-29 |
| 6747417 | Organic EL element drive circuit and organic EL display device | Jun Meade | 2004-06-08 |