Ulla Helmer

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Solna, SE

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Patents Grantslast 30 patents

Information Patent Grant
Aqueous dispersions, a process for their preparation and the use of...
- Patent number 4,816,073
- Issue date Mar 28, 1989
- Casco Nobel AB
- Ulla Helmer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Aqueous dispersions, a process for their preparation and the use of...
- Patent number 4,743,303
- Issue date May 10, 1988
- Casco Nobel AB
- Ulla Helmer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE