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:
Aug. 03, 2004
Filed:
Mar. 05, 2002
Daesang Lee, Taejon, KR;
Mi-Kyoung Lee, Tongyeong, KR;
Key-Jung Kang, Taejon, KR;
Chul-Soo Shin, Taejon, KR;
Jeong-Hwan Yun, Taejon, KR;
Do-Young Yum, Taejon, KR;
Jung-Ki Lee, Taejon, KR;
Kee-Don Park, Taejon, KR;
Ho-Joon Choi, Taejon, KR;
Bon-Tag Koo, Taejon, KR;
Inbionet Corporation, Taejon, KR;
Abstract
The present invention describes a wastewater treatment method by a microorganism decomposing Tetramethyl Ammonium Hydroxide (TMAH) which, utilized in etching the surface of silicone chip in semiconductor manufacturing process, is toxic and hard to decompose. The present invention provides novel microorganisms capable of decomposing TMAH. Also, the present invention provides a treatment method for wastewater containing TMAH, using the microorganisms. The present invention is useful in industrial field as an environmental friendly wastewater treatment method by decomposing over 90% of TMAH, one of environmental contamination materials in the wastewater of semiconductor factory.