Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9306561 | Touch switches and practical applications therefor | David W. Caldwell, Rick L. Oppor, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia +3 more | 2016-04-05 |
| 8227940 | Touch switches and practical applications therefor | David W. Caldwell, Rick L. Oppor, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia +3 more | 2012-07-24 |
| 7906875 | Touch switches and practical applications therefor | David W. Caldwell, Rick L. Oppor, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia +3 more | 2011-03-15 |
| 5521468 | Synchronization pulse separation circuit for CRT device | — | 1996-05-28 |
| 4672448 | Phase adjustment circuit for scanning video display | — | 1987-06-09 |