Johannes van Helmond

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Bergen op Zoom, NL

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Patents Grantslast 30 patents

Information Patent Grant
Polyketone flame retardant composition
- Patent number 6,005,033
- Issue date Dec 21, 1999
- General Electric Company
- Johannes Van Helmond
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Hydrolytic stable glass fiber reinforced polyester resins
- Patent number 5,731,390
- Issue date Mar 24, 1998
- General Electric Company
- Johannes van Helmond
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...