Hans S. Hartmann

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Crystallizable, low dielectric constant, low dielectric loss compos...
- Patent number 5,024,975
- Issue date Jun 18, 1991
- E. I. Du Pont de Nemours and Co., Inc.
- Hans S. Hartmann
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Preforms for reinforcement of battery grids
- Patent number 4,487,792
- Issue date Dec 11, 1984
- E. I. Du Pont de Nemours and Company
- Hans S. Hartmann
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Lead coated alumina fiber and lead matrix composites thereof
- Patent number 4,282,922
- Issue date Aug 11, 1981
- E. I. Du Pont de Nemours and Company
- Hans S. Hartmann
- C03 - GLASS MINERAL OR SLAG WOOL