Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618438 | Method of isolating an analyte using a solid phase extraction medium | Philip J. Dumont, Donald F. Hagen, Craig G. Markell, Luther W. Schmidt | 1997-04-08 |
| 5616407 | Self-wettable solid phase extraction medium | Donald F. Hagen, Craig G. Markell | 1997-04-01 |