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. 01, 2008
Filed:
Nov. 29, 2004
Koji Kakuya, Ube, JP;
Masayuki Uegami, Ube, JP;
Junichi Kawano, Onoda, JP;
Tomoko Okita, Hatsukaichi, JP;
Kenji Okinaka, Ube, JP;
Andreas D. Jazdanian, Valparaiso, IN (US);
Koji Kakuya, Ube, JP;
Masayuki Uegami, Ube, JP;
Junichi Kawano, Onoda, JP;
Tomoko Okita, Hatsukaichi, JP;
Kenji Okinaka, Ube, JP;
Andreas D. Jazdanian, Valparaiso, IN (US);
Toda Kogyo Corporation, Hiroshima-ken, JP;
Abstract
A purifying agent for purifying soil or ground water which comprises a water suspension containing iron composite particles comprising α-Fe and magnetite, and having an average particle diameter of 0.05 to 0.50 μm, an S content of 3500 to 10000 ppm and an Al content of 0.10 to 1.50% by weight, and polyaspartic acid or a salt thereof. The purifying agent is capable of decomposing aliphatic organohalogen compounds or aromatic organohalogen compounds contained in the soil or ground water in an efficient, continuous and economical manner.