Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146840 | Simultaneous enumeration of E. coli and total coliforms | George Chang | 2000-11-14 |
| 5643743 | Method for detecting coliform and E. coli bacteria | George Chang | 1997-07-01 |
| 5411867 | Method for determination of E. coli in water | George Chang | 1995-05-02 |