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:
Dec. 10, 2013
Filed:
Nov. 16, 2009
Applicants:
Koji Sato, Tokyo, JP;
Kiyoshi Nakai, Tokyo, JP;
Kenji Mae, Tokyo, JP;
Inventors:
Assignee:
Elpida Memory, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A write amplifier for driving a bit line connected to a selected phase change memory cell drives the bit line with a first current driving capability and then drives the bit line with a second current driving capability lower than the first current driving capability.