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:
Feb. 25, 2003
Filed:
Oct. 12, 2001
Applicant:
Inventor:
Yu-Shen Lin, Taipei Hsien, TW;
Assignee:
Auras Technology Ltd., Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/11 ;
U.S. Cl.
CPC ...
B22F 3/11 ;
Abstract
A method for making a heat dissipating tube includes the steps of preparing a copper plate, forming a cylindrical tube with a flat bottom and an open end, inserting a copper bar and copper powder into the cylindrical tube, sintering the copper powder to form porous pyrocrystalline copper, removing the copper bar and thus defining a central hole in the porous pyrocrystalline copper, attaching a cap with an drain hole to the open end to close the open end, filling the cylindrical tube with a heat conducting fluid through the drain hole, and drawing a vacuum inside the cylindrical tube through the drain hole and then sealing the drain hole.