Astrid Walch

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Kressberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Ceramic filter element
- Patent number 8,388,898
- Issue date Mar 5, 2013
- Pall Corporation
- Steffen Heidenreich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filtering device, especially for use as a well screen filter
- Patent number 8,082,986
- Issue date Dec 27, 2011
- Pall Corporation
- Steffen Heidenreich
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
CERAMIC FILTER ELEMENT
- Publication number 20110058990
- Publication date Mar 10, 2011
- PALL CORPORATION
- Steffen Heidenreich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTERING DEVICE, ESPECIALLY FOR USE AS A WELL SCREEN FILTER
- Publication number 20100065270
- Publication date Mar 18, 2010
- PALL CORPORATION
- Steffen Heidenreich
- E21 - EARTH DRILLING MINING
Information Patent Application
Filter candle
- Publication number 20070031304
- Publication date Feb 8, 2007
- PALL CORPORATION
- Steffen Heidenreich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Process for the manufacturing of filter elements as well as filter...
- Publication number 20050263918
- Publication date Dec 1, 2005
- PALL CORPORATION
- Steffen Heidenreich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter element and filter apparatus for cross-flow filtration proce...
- Publication number 20050061735
- Publication date Mar 24, 2005
- Steffen Heidenreich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Ceramic filter element and method for production thereof
- Publication number 20040067175
- Publication date Apr 8, 2004
- Steffen Heidenreich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL