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, 2007
Filed:
Sep. 20, 2006
Applicant:
Noriyuki Matsui, Kawasaki, JP;
Inventor:
Noriyuki Matsui, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/41 (2006.01); G11C 11/413 (2006.01); G11C 11/406 (2006.01); G11C 29/52 (2006.01); G11C 7/02 (2006.01); G11C 7/24 (2006.01); G11C 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An SRAM (Static Ransom Access Memory) has a refreshing unit for performing a refreshing operation to maintain a state of an electric charge in a memory cell in order to prevent stored data from being destructed by a latch-up phenomenon to maintain the stored data certainly even when a soft error occurs due to a neutron.