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Aart J. Naaktgeboren Patents |
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Inventor: Naaktgeboren; Aart J.
Address: Dedemsvaart, NL
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4765898 |
Semipermeable membranes based on polymers containing sulphonate group |
August 23, 1988 |
| Semipermeable membrane consisting of a polymer, embodying [--SO.sub.3 --] groups; said [--SO.sub.3 --] groups may be present in the continuous polymer chains or may be present in links between continuous polymer chains. The membrane may have been formed either by in situ coagulation of |
| 4721568 |
Semipermeable composite membrane |
January 26, 1988 |
| A semipermeable composite membrane on a microporous substrate, such as a polysulphone membrane having on its surface a semipermeable membrane being the reaction product of a polyamine, a water soluble polymer of formula 1 ##STR1## wherein R is hydrogen or an hydrocarbongroup, x is 0- |
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