Per Ulmgren

Follow

Person

Lidingo, SE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of sulfide-free alkali liquor using cop...
- Patent number 4,981,556
- Issue date Jan 1, 1991
- Alby Klorat AB
- Mats-Olov Hedblom
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE