Fishing – trapping – and vermin destroying
Patent
1993-11-03
1995-02-21
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437 59, 437126, 437133, 148DIG9, 148DIG72, H01L 21265
Patent
active
053915046
ABSTRACT:
Generally, and in one form of the invention, an integrated circuit comprising a bipolar transistor and a field effect transistor, wherein a channel of the field effect transistor and a base of the bipolar transistor are formed from a base epitaxial layer 16, and whereby field effect and bipolar transistors are formed within a common material structure is disclosed. In another form of the invention, an integrated circuit comprising a substrate 10, an epitaxial subcollector layer 12, an epitaxial collector layer 14, an epitaxial base layer 16, an epitaxial emitter layer 18, a bipolar transistor formed with an emitter electrical contact 20, 28, 35 to the emitter layer 18, a base contact 34 to the base layer 16, and a collector contact 42 to the subcollector layer 12, and a field effect transistor formed with a first gate contact 20, 30, 39 to the emitter layer 18, a first source contact 36 to the base layer 16, and a first drain contact 37 to the base layer 16, is disclosed.
REFERENCES:
patent: 4981808 (1991-01-01), Hayes
patent: 4996163 (1991-02-01), Sasaki
patent: 5068705 (1991-11-01), Tran
patent: 5077231 (1991-12-01), Plumton et al.
patent: 5213987 (1993-05-01), Bayraktahoglu
patent: 5223449 (1993-06-01), Morris et al.
patent: 5294566 (1994-03-01), Mori
Hill Darrell
Taddiken Albert H.
Donaldson Richard L.
Hearn Brian E.
Kesterson James C.
Nguyen Tuan
Skrehot Michael K.
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