John Hen

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Macon, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Paints containing low sheen opacifying pigments obtained by flux ca...
- Patent number 6,346,145
- Issue date Feb 12, 2002
- Engelhard Corporation
- John Hen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Low sheen opacifying pigments and manufacture thereof by calcinatio...
- Patent number 6,136,086
- Issue date Oct 24, 2000
- Englehard Corporation
- John Hen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Cement-based compositions
- Patent number 6,027,561
- Issue date Feb 22, 2000
- Engelhard Corporation
- Karen Ann Gruber
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
Pigment for rotogravure paper
- Publication number 20020161097
- Publication date Oct 31, 2002
- John Hen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...