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:
Jul. 13, 2010
Filed:
Jan. 09, 2008
Yasue Yamamoto, Osaka, JP;
Masanori Shirahama, Shiga, JP;
Yasuhiro Agata, Osaka, JP;
Toshiaki Kawasaki, Osaka, JP;
Yasue Yamamoto, Osaka, JP;
Masanori Shirahama, Shiga, JP;
Yasuhiro Agata, Osaka, JP;
Toshiaki Kawasaki, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a nonvolatile semiconductor memory device storing data by accumulating charges in a floating gate, memory units, each of which includes a first MOS transistor as a read device, a bit cell composed of a first capacitor as a capacitance coupling device and a second capacitor as an erase device, and a decode device including a second MOS transistor and a third MOS transistor, are arranged in array. This attains nonvolatile memory capable of bit by bit selective erase arranged in array to thus reduce the core area remarkably.