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:
Mar. 15, 2005
Filed:
Oct. 08, 2002
Applicants:
Yam MO Wong, Singapore, SG;
Ka Shing Kenny Kwan, Singapore, SG;
Rong Duan, Singapore, SG;
Zhao Ya Rui, Singapore, SG;
Inventors:
Yam Mo Wong, Singapore, SG;
Ka Shing Kenny Kwan, Singapore, SG;
Rong Duan, Singapore, SG;
Zhao Ya Rui, Singapore, SG;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K031/02 ; B23K001/06 ;
U.S. Cl.
CPC ...
Abstract
The invention provides an apparatus and a method for preventing oxidation of an electronic device, such as a semiconductor leadframe, when it is heated. The apparatus comprises an area in which said device is to be heated and inlet means adapted to supply a relatively inert gas to the said area. In particular, the apparatus includes a porous distribution element through which the inert gas is passed from the inlet means to said area, whereby to protect the electronic device in the area from oxidation.