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:
Sep. 03, 2013
Filed:
Jan. 18, 2012
Kazuyuki Misumi, Tokyo, JP;
Masahiro Shimizu, Tokyo, JP;
Tsuyoshi Koga, Tokyo, JP;
Tatsuhiko Akiyama, Tokyo, JP;
Tomohiro Murakami, Tokyo, JP;
Kazuyuki Misumi, Tokyo, JP;
Masahiro Shimizu, Tokyo, JP;
Tsuyoshi Koga, Tokyo, JP;
Tatsuhiko Akiyama, Tokyo, JP;
Tomohiro Murakami, Tokyo, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
A method for manufacturing a magnetic memory chip device comprises the steps of: writing information in each of a plurality of magnetic memory chips formed on a silicon wafer; adhering a high magnetic permeability plate on a back face of the silicon wafer after writing information, the high magnetic permeability plate having a higher magnetic permeability than silicon and having a thickness of 50 um or more; dicing the silicon wafer into respective magnetic memory chips after adhering the high magnetic permeability plate.