Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11209413 | Method for determining hardness concentration using a monovalent ion selective electrode | Robert Astle, Jeffrey Zimmerman | 2021-12-28 |
| 11016074 | Apparatus for measuring water hardness using ion selective electrode | Robert Astle, Jeffrey Zimmerman, Ravi Meruva | 2021-05-25 |