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. 15, 1987
Filed:
Jan. 02, 1987
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361385 ; 165 804 ; 174 / ; 357 82 ; 361382 ;
Abstract
A boiling type cooling structure for cooling semiconductor chips mounted on printed circuit cards, with a heat conductive stud being attached to the surface of each chip. Cooling plates with fins, arranged so as to surround the circumference of each heat conductive stud, are placed between the printed circuit cards in order to condense the vapor bubbles produced near the heat conductive studs.