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:
Nov. 29, 1994
Filed:
Jul. 09, 1993
Applicant:
Inventors:
Chihiro Hayashi, Takarazuka, JP;
Kimihiko Ohminato, Handa, JP;
Assignees:
Sumitomo Metal Industries, Ltd., Osaka, JP;
Sumikin Precision Forge Inc., Handa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257722 ; 257721 ; 361697 ; 361702 ; 361703 ; 165 803 ; 16510433 ;
Abstract
Pin-finned heat sink having good heat dissipating characteristics satisfy the following inequality: ##EQU1## where d is the diameter of pins, c is the distance between pins, and h is the height of pins. This heat sink can increase the level of integration of semiconductor devices with which it is used.