Ralf Olsson

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Stockholm, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method of quantifying performance chemicals in pulp and paper
- Patent number 5,680,320
- Issue date Oct 21, 1997
- Eka Nobel AB
- Ulla Helmer
- G01 - MEASURING TESTING
Information Patent Grant
Method of quantifying the properties of paper
- Patent number 5,680,321
- Issue date Oct 21, 1997
- Eka Nobel AB
- Ulla Helmer
- G01 - MEASURING TESTING
Information Patent Grant
Method of quantifying the wet strength of paper
- Patent number 5,638,284
- Issue date Jun 10, 1997
- Eka Nobel AB
- Ulla Helmer
- G01 - MEASURING TESTING