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:
Mar. 06, 1990
Filed:
Apr. 21, 1988
Applicant:
Inventors:
Toshihiko Mori, Isehara, JP;
Toshiro Futatsugi, Isehara, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; H01L / ;
U.S. Cl.
CPC ...
365159 ; 357-4 ; 357 16 ; 357 57 ;
Abstract
A semiconductor memory device comprises a transistor having such a current characteristic that a base current has a differential negative resistance characteristic and a collector current greatly flows after the differential negative resistance characteristic occurs in the base current when a base-emitter voltage is increased, a load coupled in series between a collector and a base of the transistor, first and second input terminals coupled to the base of the transistor through a base resistance of the transistor, and an ouptut terminal coupled to the collector of the transistor.