Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350831 | Miticidal and mite ovicidal, compounds | David C. K. Chan | 1982-09-21 |
| 4269856 | Mite and mite ovicidal compositions | David C. K. Chan | 1981-05-26 |
| 4208348 | Quaternary ammonium salt catalyzed preparation of sulfonamides | David C. K. Chan | 1980-06-17 |