Helmut Zentgraf

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Burghaun, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of and arrangement for electrostatic separation of paper- an...
- Patent number 4,570,861
- Issue date Feb 18, 1986
- Kali und Salz AG
- Helmut Zentgraf
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Arrangement for feeding of a fine-particle material to electrostati...
- Patent number 4,569,432
- Issue date Feb 11, 1986
- Kali und Salz AG
- Helmut Zentgraf
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Electrostatic free-fall separator with feeding arrangement
- Patent number 4,557,827
- Issue date Dec 10, 1985
- Kali und Salz AG
- Gunter Fricke
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...