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Erwin Knapek
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Unterhaching, DE
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last 30 patents
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Patent Grant
Method for producing uniform polymethylmethacrylate layers
Patent number
5,128,207
Issue date
Jul 7, 1992
Siemens Aktiengesellschaft
Helmut Formanek
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Electron-beam-sensitive resist material for microstructures in elec...
Patent number
4,837,125
Issue date
Jun 6, 1989
Siemens Aktiengesellschaft
Erwin Knapek
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for localizing weak points within an electrica...
Patent number
4,640,626
Issue date
Feb 3, 1987
Siemens Aktiengesellschaft
Ralf Schmid
G01 - MEASURING TESTING