Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7543934 | Eyeglasses with activity monitoring and acoustic dampening | Thomas A. Howell, David Chao, C. Douglass Thomas, Peter P. Tong | 2009-06-09 |
| 6929116 | Visual display of container contents | David Chao | 2005-08-16 |