Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6124012 | Solid phase extraction disk and apparatus for enhanced recovery and precision | Walter Jones, Alfonso Liu, Joseph Stefkovich | 2000-09-26 |
| 5849249 | Solid phase extraction apparatus for enhanced recovery and precision | Walter Jones, Alfonso Liu, Joseph Stefkovich | 1998-12-15 |