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. 09, 1999
Filed:
May. 05, 1998
Applicant:
Inventors:
Assignee:
Cleanevi' Engineering Consultant Co., Ltd., Kaohsiung Hsien, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C / ; B02C / ;
U.S. Cl.
CPC ...
294034 ; 294031 ; 294033 ; 241 23 ; 241D / ;
Abstract
A method and a device for treating waste printed circuit boards with molten tin include process of throwing printed circuit boards into a molten tin bath in treating furnace, letting the boards proceed crashing, stirring and carbonizing treatment for separating copper foil, thermosetting plastic and glass fiber. Then these three kinds of materials are respectively separated from each other by taking advantage of their different specific gravity and collected in separate tanks to recover copper and other metals from the waste printed circuit boards.