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. 20, 1994
Filed:
Apr. 28, 1993
Applicant:
Inventors:
Mitsutaka Yamada, Atsugi, JP;
Kishio Yokouchi, Machida, JP;
Nobuo Kamehara, Isehara, JP;
Koichi Niwa, Tama, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361700 ; 622592 ; 16510433 ; 252 67 ; 257715 ;
Abstract
A coolant for cooling a semiconductor element by direct immersion, cooling, which has an improved cooling capability, is disclosed. The coolant comprises a low boiling point fluorocarbon having a boiling point of 30.degree. C. to 100.degree. C. and a high boiling point fluorocarbon having a boiling point higher than that of the low boiling point fluorocarbon by at least 100.degree. C.; an amount of the high boiling point fluorocarbon being less than 20% by volume, based on the volume of the low boiling point fluorocarbon.