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:
Jun. 10, 2014
Filed:
Nov. 21, 2012
Institute of National Colleges of Technology, JP, Hachioji, JP;
Polytech Kagawa Co., Ltd., Marugame, JP;
Hiroshi Okano, Takamatsu, JP;
Gou Sajiki, Takamatsu, JP;
Mitsunori Deguchi, Marugame, JP;
Sadao Tanimoto, Marugame, JP;
Institute of National Colleges of Technology, Japan, Hachioji-shi, JP;
Polytech Kagawa, Co., Ltd., Marugame-shi, JP;
Abstract
A method selectively recovers a useful substance from waste including a chlorine-containing synthetic resin and metal copper in a mixed state. Metal copper is recovered from coated copper-wire waste. The method includes the steps of heat-treating the waste in form of coated copper wires, each having a coating material made of a chlorine-containing synthetic resin, in oil or under a non-oxygen condition. Here, the coating material is carbonized and a chlorine content of the coating material is reduced. Then the coating material and the copper wire are separated from each other the copper wire is recovered. The chlorine-containing synthetic resin can be treated without generating dioxin.