Hartmut Nefzger

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New Martinsville, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Delayed action catalysts for carpet backing and air frothed foam
- Patent number 6,140,381
- Issue date Oct 31, 2000
- Bayer Corporation
- James W. Rosthauser
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of delayed action tin catalysts
- Patent number 6,020,283
- Issue date Feb 1, 2000
- Bayer Corporation
- James W. Rosthauser
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for polymerizing isocyanates
- Patent number 5,770,671
- Issue date Jun 23, 1998
- Bayer Aktiengesellschaft
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...