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:
Jan. 27, 2009
Filed:
Jun. 08, 2004
Masayuki Uegami, Ube, JP;
Junichi Kawano, Onoda, JP;
Koji Kakuya, Ube, JP;
Tomoko Okita, Hatsukaichi, JP;
Kenji Okinaka, Ube, JP;
Masayuki Uegami, Ube, JP;
Junichi Kawano, Onoda, JP;
Koji Kakuya, Ube, JP;
Tomoko Okita, Hatsukaichi, JP;
Kenji Okinaka, Ube, JP;
Toda Kogyo Corporation, Hiroshima-Ken, JP;
Abstract
Iron composite particles for purifying soil or ground water, comprise α-Fe and magnetite, and having a ratio of a diffraction intensity Dof (110) plane of α-Fe to a sum of a diffraction intensity Dof (311) plane of magnetite and the diffraction intensity D(D/(D+D)) of 0.30 to 0.95 as measured from X-ray diffraction spectrum of the iron composite particles, an Al content of 0.10 to 1.50% by weight and an S content of 3500 to 7000 ppm; a process for producing the iron composite particles; a purifying agent containing the iron composite particles; a process for producing the purifying agent; and a method for purifying soil or ground water.