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Juha Tanskanen Patents |
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Inventor: Tanskanen; Juha
Address: Oulu, FI
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6955743 |
Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor |
October 18, 2005 |
| The invention relates to a process for recovering and producing chemicals in a pulp production process where organic chemicals, such as formic acid and acetic acid, are used as cooking chemicals. The process of the invention is based on regeneration of cooking acids and formation of |
| 5505988 |
Method and arrangement for colouring optical fibres |
April 9, 1996 |
| The invention relates to a method and an arrangement for coloring optical fibres, each fibre being drawn through an upper nozzle in a coloring tool into a color chamber, into which colorant is introduced, and further through a lower nozzle out of the color chamber. The colored fibre is |
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