Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977156 | Amino piperazine esters showing biocidal activity | Wilfred W. Wilson | 1990-12-11 |
| 4732650 | Bleaching of cellulosic pulps using hydrogen peroxide | Robert J. Michalowski, Steven H. Christiansen, David A. Wilson | 1988-03-22 |
| 4581454 | Adducts of aminohydrocarbyl piperzaines and urea | William P. Coker | 1986-04-08 |
| 4477646 | Piperazinoethyl ureas | — | 1984-10-16 |
| 4267890 | Fire extinguishing system including sensor comparable to determine charge | Lawrence F. Fratzke | 1981-05-19 |