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. 01, 2005
Filed:
Mar. 24, 2003
Yasuhito Inagaki, Kanagawa, JP;
Haruo Watanabe, Kanagawa, JP;
Shigeo Kiuchi, Chiba, JP;
Takaaki Kano, Kanagawa, JP;
Yasuhito Inagaki, Kanagawa, JP;
Haruo Watanabe, Kanagawa, JP;
Shigeo Kiuchi, Chiba, JP;
Takaaki Kano, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Sulfonated styrene polymer and/or its salt, a waste water treatment material and sludge dehydrating agent each containing the sulfonated styrene polymer and/or its salt as an effective component thereof are disclosed. The waste water treatment material is used such that sulfonated styrene polymer and/or its salt, which has viscosity of 10 mPa·S to 20,000 mPa·S at 25° C. after 0.01 N to 5 N neutral salt has been added to 1 wt % water solution of the sulfonated styrene polymer and/or its salt, is added to each waste water so that waste water is purified. When a sludge dehydrating agent is required, sulfonated styrene polymer and/or its salt having a weight average molecular weight of 1,100,000 or greater is combined with a cation polymer flocculating agent or an inorganic flocculating agent.