04131908 is referenced by 32 patents and cites 8 patents.

A safeguarded integrated circuit includes two supply electrodes, an output electrode and an input electrode. Between two of the electrodes there is provided a protection circuit having a lateral bipolar transistor, the emitter and collector zones of which are connected respectively to the said electrodes. The bipolar transistor is provided in a region which is surrounded by the substrate which region serves as a base zone and has a conductivity type opposite to that of the substrate. A connection contact connected to the emitter is provided on this region and a modulatable resistance is formed between the connection contact and the active base zone by the region.

Title
Semiconductor protection device having a bipolar lateral transistor
Application Number
5/767569
Publication Number
4131908
Application Date
February 10, 1977
Publication Date
December 26, 1978
Inventor
Olof E H Klaver
Nijmegen
NL
Dirk Daub
Nijmegen
NL
Agent
Steven R Biren
Thomas A Briody
Assignee
U S Philips Corporation
NY, US
IPC
H01L 27/02
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