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:
Feb. 16, 2010
Filed:
Oct. 02, 2007
Applicant:
Masaya Muranaka, Akishima, JP;
Inventor:
Masaya Muranaka, Akishima, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01); G01R 31/00 (2006.01); G06F 19/00 (2006.01); G01R 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In the manufacturing process of a semiconductor integrated circuit device, a plurality of identification elements having the same arrangement are formed and the relation of magnitude in a physical amount corresponding to variations in the process of the plurality of identification elements is employed as identification information unique to the semiconductor integrated circuit device.