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Wilhelm Aarsrud Patents |
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Inventor: Aarsrud; Wilhelm
Address: Vanersborg, SE
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5288857 |
Lignin preparation and method for its manufacture |
February 22, 1994 |
| The invention relates to a lignin preparation prepared from black liquor derived from an alkali delignification process, such as the sulphate process, soda process or polysulphide process. The lignin preparation comprises mainly lignin and at least the major part of the sodium content |
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