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:
Oct. 27, 1992
Filed:
Jan. 29, 1991
Applicant:
Inventor:
Naoki Hanada, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
437 43 ; 437 48 ; 437 45 ; 437 52 ;
Abstract
The present invention discloses a logic semiconductor device having a non-volatile memory in which a memory cell portion and a logic circuit portion are formed on a single semiconductor substrate, and a floating gate of the memory cell portion and a gate of the logic circuit portion are made of different materials, and a method of manufacturing the same.