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. 06, 2001
Filed:
Mar. 31, 1998
Shoichi Iwasa, Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A semiconductor device including an input protective circuit. A first transistor has a gate formed on the semiconductor substrate and a first and second conductive region is formed on each side of the first gate. Third and fourth conductive regions are respectively formed between the first and second conductive regions and the gate. The third conductive region has a resistance higher than that of the first conductive region, and the fourth conductive region has a conductivity type opposite to the conductivity type of the remaining regions. A second transistor is formed with a pair of conductive regions at an insulated gate. One of the pair of conductive regions is of the second transistor connected to the first transistor, first or second conductive region.