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David A. Sunderland
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Hopewell Junction, NY, US
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last 30 patents
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Patent Grant
Method for making heterojunction bipolar transistor with self-align...
Patent number
5,656,514
Issue date
Aug 12, 1997
International Business Machines Corporation
David Ahlgren
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Image reversal process for self-aligned implants in planar epitaxia...
Patent number
5,266,505
Issue date
Nov 30, 1993
International Business Machines Corporation
David C. Ahlgren
H01 - BASIC ELECTRIC ELEMENTS