Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6217621 | Textile substrate dye stripping | Peter Modebelu, Harrie Schoots | 2001-04-17 |
| 5188807 | Apparatus for producing high yield sodium hydrosulfite | Steven H. Levis | 1993-02-23 |
| 5094833 | High yield sodium hydrosulfite generation | Steven H. Levis | 1992-03-10 |