Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4673762 | Decolorizing ethanolamines with alkylene oxides | Charles S. Steele | 1987-06-16 |
| 4487987 | Method of decolorizing mixtures of aminoethylpiperazine, a polyoxypropylenediamine and alkylphenols with N,N-diethylhydroxylamine | Charles S. Steele | 1984-12-11 |