Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9528257 | Toilet bowl trapping device | Paul H. Hanifl, Jeff Steffens, David Beck, Gregory T. Davis | 2016-12-27 |
| 9157224 | Toilet bowl trapping device | Paul H. Hanifl, Jeff Steffens, David P. Beck, Gregory T. Davis | 2015-10-13 |
| 8201281 | Toilet bowl trapping device | Paul H. Hanifl, Jeff Steffens | 2012-06-19 |
| 8036539 | Gigabit ethernet longwave optical transceiver module having amplified bias current | Philip Kiely, Minja Trklja | 2011-10-11 |
| 7689122 | Polarity-insensitive signal detect circuit for use with any signal sequence | Greta Light | 2010-03-30 |