Helene Prigge

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Chatswood, AU

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Patents Grantslast 30 patents

Information Patent Grant
Process for treating polishing cloths used for semiconductor wafers
- Patent number 5,167,667
- Issue date Dec 1, 1992
- Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
- Helene Prigge
- B24 - GRINDING POLISHING
Information Patent Grant
Process for the surface treatment of semiconductor slices
- Patent number 5,164,323
- Issue date Nov 17, 1992
- Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
- Gerhard Brehm
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process and apparatus for double-sided chemomechanical polishing of...
- Patent number 5,110,428
- Issue date May 5, 1992
- Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
- Helene Prigge
- B24 - GRINDING POLISHING