Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820424 | Products and processes for the flocculation of aqueous suspensions | Nicholas D. Smith | 1989-04-11 |
| 4820645 | Testing polyelectrolytes | David Farrar, Peter Flesher | 1989-04-11 |