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. 19, 2008
Filed:
Jun. 22, 2004
Toshio Tanaka, Sakai, JP;
Kanji Motegi, Sakai, JP;
Kenkichi Kagawa, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A gas treating device capable of electrically collecting dust and of decomposing odors and other matter by plasma includes a plasma generating device integrally incorporated into an ionization part in a casing. The ionization part has an ionization line and a columnar portion of a negative electrode member. The plasma generating device includes a discharge electrode which shares a counter electrode with the ionization line. During operation, dust of a relatively small size in room air is electrically charged by discharge between the ionization line and the counter electrode. An electrostatic filter entraps and collects the electrically charged dust. A plasma of low temperature is generated by streamer discharge between the discharge electrode and the counter electrode. Harmful substances and odorous substances in the room air are decomposed by an activated species contained in the generated low-temperature plasma.