Fishing – trapping – and vermin destroying
Patent
1994-12-14
1996-04-23
Wilczewski, Mary
Fishing, trapping, and vermin destroying
437 24, 437173, 437929, 437938, H01L 4900
Patent
active
055102743
ABSTRACT:
A semiconductor layer, through which a main current flows, is so structured that a carrier life time in the semiconductor layer is ununiform in accordance with a predetermined distribution of the carrier life time. Thus, turn OFF characteristics of a semiconductor switching device can be improved without causing any unacceptable disadvantages for other characteristics.
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Mitsubishi Denki & Kabushiki Kaisha
Tsai H. Jey
Wilczewski Mary
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