Klaus Witter

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Hamburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Magneto-optical light switching element and method of manufacturing...
- Patent number 4,893,909
- Issue date Jan 16, 1990
- U.S. Philips Corp.
- Peter Hansen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Magneto-optical light switching element and method of manufacturing...
- Patent number 4,770,504
- Issue date Sep 13, 1988
- U.S. Philips Corp.
- Peter Hansen
- G02 - OPTICS
Information Patent Grant
Magnetooptical modulator
- Patent number 4,578,651
- Issue date Mar 25, 1986
- U.S. Philips Corporation
- Heinrich Heitmann
- G02 - OPTICS
Information Patent Grant
Method of making a magnetic memory layer
- Patent number 4,314,894
- Issue date Feb 9, 1982
- U.S. Philips Corporation
- Christoph Schmelzer
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic memory layer
- Patent number 4,274,935
- Issue date Jun 23, 1981
- U.S. Philips Corporation
- Christoph Schmelzer
- G11 - INFORMATION STORAGE