Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7944217 | Object proximity detector and object position detector | — | 2011-05-17 |
| 7511585 | Automatic page detector | — | 2009-03-31 |
| 7279999 | Automatic page detector | — | 2007-10-09 |
| 7023221 | Structure of object proximity and position detector | — | 2006-04-04 |
| 6919882 | Position detection method and device | — | 2005-07-19 |
| 4924747 | Wave forming circuit of an electronic tone generator | — | 1990-05-15 |
| 4796503 | Amplification circuit for electronic tone generator | — | 1989-01-10 |
| 4752703 | Current source polarity switching circuit | — | 1988-06-21 |