Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7837847 | High purity water pH sensor with shielded flowing liquid junction | Chang-Dong Feng, Wayne B. Wood | 2010-11-23 |
| 6894502 | pH sensor with internal solution ground | Chang-Dong Feng, Joe N. Covey, Richard N. Baril, Roland H. Koluvek | 2005-05-17 |