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:
May. 13, 2003
Filed:
Jul. 19, 2001
Takeshi Negishi, Saitama, JP;
Toshiyuki Nagase, Saitama, JP;
Yoshiyuki Nagatomo, Saitama, JP;
Shoichi Shimamura, Saitama, JP;
Asao Tokiwa, Sunto-gun, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A heat sink is obtained that has high thermal conductivity as well as satisfactory moldability and corrosion resistance by using a malleable material made of aluminum or aluminum alloy. Liquid cooled heat sink has a passage in which coolant is able to pass, and is joined to a ceramic substrate. A plurality of through holes extending from one end to the other end are formed by a plurality of dividing walls through in flat casing of which both ends are open, and notches are formed on one or both ends of the plurality of dividing walls. Corrugated fins are respectively inserted into each of the plurality of through holes, and each through hole is demarcated into a plurality of slots extending from one end to the other end of the casing by these fins. Both ends of the casing are closed by a pair of covers and and coolant inlet and outlet are formed in the covers. The above passage is formed by communication of the notches and slots, and the above inlet and outlet are positioned on both ends of the passage.