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:
Dec. 23, 2008
Filed:
Jul. 10, 2003
Chihiro Kawai, Itami, JP;
Masami Tatsumi, Itami, JP;
Chihiro Kawai, Itami, JP;
Masami Tatsumi, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A filter for trapping, sterilizing, and decomposing organic matter, bacteria, viruses, and other harmful substances is provided at low cost and extremely high efficiency. A semiconductor material having a light emitting function is formed in the interior or on the surface of a porous ceramic material substrate by deposition from a suspension of semiconductor particles, and an electrode provided to serve as a filter. Voltage is applied so that ultraviolet light is emitted while a fluid is being filtered, and any harmful substances are filtered and simultaneously sterilized and decomposed.