Hellmut Fritzsche

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Chicago, IL, US

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Patents Grantslast 30 patents

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Homogeneous compositions of microcrystalline semiconductor material...
- Patent number 5,596,522
- Issue date Jan 21, 1997
- Energy Conversion Devices, Inc.
- Stanford R. Ovshinsky
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Optical recording medium having a plurality of discrete phase chang...
- Patent number 5,591,501
- Issue date Jan 7, 1997
- Energy Conversion Devices, Inc.
- Stanford R. Ovshinsky
- G11 - INFORMATION STORAGE
Information Patent Grant
Homogeneous composition of microcrystalline semiconductor material,...
- Patent number 5,335,219
- Issue date Aug 2, 1994
- Stanford R. Ovshinsky
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of preparing a magnetic material
- Patent number 4,723,994
- Issue date Feb 9, 1988
- Ovonic Synthetic Materials Company, Inc.
- Stanford R. Ovshinsky
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
High performance, small area thin film transistor
- Patent number 4,620,208
- Issue date Oct 28, 1986
- Energy Conversion Devices, Inc.
- Hellmut Fritzsche
- H01 - BASIC ELECTRIC ELEMENTS