Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D784456 | Shuffleboard | — | 2017-04-18 |
| 9110053 | Dried blood spotting paper device and method | Susan L. Cohen, Wilford C. Downs, Paul Boguszewski | 2015-08-18 |
| D736403 | Modular dried matrix spotting device | Paul Boguszewski, Robert Lee Grenz | 2015-08-11 |
| 9005543 | Apparatus for punching and solid phase extraction of dried biological fluid spot and related methods | Robert Lee Grenz | 2015-04-14 |
| 8883089 | Sample preparation device and method utilizing polyamide tube | Robert Lee Grenz | 2014-11-11 |
| 8663580 | Dried biological fluid spot punch device and related methods | Robert Lee Grenz | 2014-03-04 |
| D684276 | Modular dried matrix spotting device | Robert Lee Grenz, Paul Boguszewski | 2013-06-11 |
| 7595026 | Solid phase extraction pipette | Wilford C. Downs | 2009-09-29 |
| 5351681 | Underwater breathing apparatus for a swimmer | — | 1994-10-04 |