Larry E. Drafall

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St. Charles, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Crystal puller and method for growing monocrystalline silicon ingots
- Patent number 6,447,601
- Issue date Sep 10, 2002
- MEMC Electronic Materials, Inc.
- Richard Joseph Phillips
- C30 - CRYSTAL GROWTH
Information Patent Grant
Methods for improving zero dislocation yield of single crystals
- Patent number 5,980,629
- Issue date Nov 9, 1999
- MEMC Electronic Materials, Inc.
- Richard L. Hansen
- C30 - CRYSTAL GROWTH
Information Patent Grant
Surface-treated crucibles for improved zero dislocation performance
- Patent number 5,976,247
- Issue date Nov 2, 1999
- MEMC Electronic Materials, Inc.
- Richard L. Hansen
- C30 - CRYSTAL GROWTH
Information Patent Grant
Process for controlling thermal history of Czochralski-grown silicon
- Patent number 5,779,791
- Issue date Jul 14, 1998
- MEMC Electronic Materials, Inc.
- Harold W. Korb
- C30 - CRYSTAL GROWTH