Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885096 | Aromatics - non-armoatics separation by permeation through thermally crosslinked nitrile rubber membranes | — | 1989-12-05 |
| 4857201 | Reverse osmosis cellulose and cellulosic membranes prepared by repeated drying and rewetting | Wan-Kei Wan | 1989-08-15 |
| 4802987 | Selective permeation of aromatic hydrocarbons through polyethylene glycol impregnated regenerated cellulose or cellulose acetate membranes | — | 1989-02-07 |