Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10495555 | Filter-cartridge based fluid-sample preparation and assay system | David Putnam, Raymond Putnam | 2019-12-03 |
| 9068976 | Integrated filtration bioanalyzer | David Putnam, Todd W. Hubbard, James A. van Zee | 2015-06-30 |
| 8968681 | Filtered assay device and method | David Putnam, Todd W. Hubbard | 2015-03-03 |
| 8202503 | Visual, continuous and simultaneous measurement of solution ammonia and hydrogen ion concentration | David Putnam, Janice A. Sharick | 2012-06-19 |
| 7790113 | Visual, continuous and simultaneous measurement of solution ammonia and hydrogen ion concentration | David Putnam, Janice A. Sharick | 2010-09-07 |