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PN-junction with guard ring
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Patent number 5,093,693
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Issue date Mar 3, 1992
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BBC Brown Boveri AG
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Christian C. Abbas
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H01 - BASIC ELECTRIC ELEMENTS
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Turn-off thyristor
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Patent number 5,003,368
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Issue date Mar 26, 1991
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BBC Brown Boveri AG
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Peter Roggwiller
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor component
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Patent number 4,849,800
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Issue date Jul 18, 1989
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BBC Brown Boveri AG
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C. Christiaan Abbas
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H01 - BASIC ELECTRIC ELEMENTS
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Method for diffusing aluminum
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Patent number 4,720,469
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Issue date Jan 19, 1988
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BBC Brown, Boveri & Company, Limited
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Helmut Keser
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H01 - BASIC ELECTRIC ELEMENTS
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