Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4729656 | Electrothermal atomiser | John E. Churchill, Michael D. Flack | 1988-03-08 |
| 4708478 | Tube cell for atomic absorption spectrophotometry | Arthur S. Andrews | 1987-11-24 |
| 4647200 | Electrothermal atomizer | John E. Churchill | 1987-03-03 |