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Electrode joint locking system
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Issue date Apr 12, 2016
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GrafTech Institute Holdings Inc.
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Mark Segger
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Insulated panel for mine safe rooms
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Issue date Sep 20, 2011
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GrafTech International Holdings Inc.
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Douglas J. Miller
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Carbon foam core panels
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Patent number 7,972,698
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Issue date Jul 5, 2011
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GrafTech International Holdings Inc.
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Douglas J. Miller
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Electrode joint locking system
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Patent number 7,230,969
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Issue date Jun 12, 2007
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Ucar Carbon Company Inc.
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Mark Segger
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR