Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857287 | Fast-dissolving, non-caking, food grade sodium tripolyphosphate | Chris C. Dick, Barry Schwartz, Bert D. McMunn | 1989-08-15 |
| 4804526 | Process for purifying phosphoric acid for electrical semiconductor use | Richard E. Hall, Frederic B. Jueneman | 1989-02-14 |