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:
Apr. 04, 2006
Filed:
Dec. 03, 2002
Masayuki Uegami, Ube, JP;
Junichi Kawano, Onoda, JP;
Tomoko Okita, Hatsukaichi, JP;
Yasuhiko Fujii, Otake, JP;
Kenji Okinaka, Ube, JP;
Koji Kakuya, Ube, JP;
Soichi Yatagi, Ube, JP;
Masayuki Uegami, Ube, JP;
Junichi Kawano, Onoda, JP;
Tomoko Okita, Hatsukaichi, JP;
Yasuhiko Fujii, Otake, JP;
Kenji Okinaka, Ube, JP;
Koji Kakuya, Ube, JP;
Soichi Yatagi, Ube, JP;
Toda Kogyo Corporation, Hiroshima-ken, JP;
Abstract
Iron particles for purifying soil or ground water of the present invention comprise a mixed phase of α-Fe phase and FeOphase, and having a BET specific surface area of 5 to 60 m/g, an Fe content of not less than 75% by weight based on the weight of the iron particles and a sulfur content of not less than 1,000 ppm. The iron particles are capable of decomposing or insolubilizing harmful substances such as organohalogen compounds and/or heavy metals, cyanogen, etc. contained in the soil or ground water in efficient, continuous and economical manners.