The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 1992
Filed:
Jul. 15, 1991
Applicant:
Inventor:
Jonathan H Orchard-Webb, Ontario, CA;
Assignee:
Mitel Corporation, Kanata, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H02H / ;
U.S. Cl.
CPC ...
257578 ; 361 56 ;
Abstract
An integrated circuit has an input protection device including a bipolar transistor to shunt current away from sensitive areas of the circuit during an e.s.d. event. The bipolar transistor includes floating electrodes on the base to define an equipotential base region so that the effective size of the emitter, and hence the currently handling capability of the transistor, is increased.