Stephan Karpfhammer

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Stammham, DE

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Patents Grantslast 30 patents

Information Patent Grant
Coated proppants for fracking extraction methods
- Patent number 10,995,264
- Issue date May 4, 2021
- Wacker Chemie AG
- Thomas Bastelberger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
COATED PROPPANTS FOR FRACKING EXTRACTION METHODS
- Publication number 20200157414
- Publication date May 21, 2020
- Wacker Chemie AG
- Thomas Bastelberger
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...