Klaus Lehmann

Follow

Person

Illertissen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Aqueous dispersions containing carboxylic acids and/or resinic acid...
- Patent number 5,725,730
- Issue date Mar 10, 1998
- Gruenau Illertissen
- Heinz-Gerd Smolka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Aqueous dispersions containing alkaline earth soaps and/or alkaline...
- Patent number 5,362,363
- Issue date Nov 8, 1994
- Chemische Fabrik Gruenau GmbH
- Heinz-Gerd Smolka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Flotation process for deinking printed waste paper
- Patent number 4,971,656
- Issue date Nov 20, 1990
- Chemische Fabrik Gruenau GmbH
- Klaus Lehmann
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for deinking printed waste paper
- Patent number 4,959,123
- Issue date Sep 25, 1990
- Chemische Fabrik Gruenau GmbH
- Klaus Lehmann
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE