Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11442049 | Method for producing a purple complex for the presence of lead using sodium rhodizonate without use of strong acid | David Cox | 2022-09-13 |
| 9128075 | Method for controlling the sensitivity and response point of chemical test kits for metals in paint and other media | David Cox | 2015-09-08 |