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:
Sep. 09, 1997
Filed:
Aug. 30, 1996
Naoki Abe, Okazaki, JP;
Koji Mizuno, Toyota, JP;
Masayuki Sumiyoshi, Okazaki, JP;
Katsuya Murakami, Toyota, JP;
Kojiro Murayama, Toyota, JP;
Koichi Sugiura, Toyota, JP;
Fumio Kawahara, Toyota, JP;
Mitsuru Tomoto, Toyota, JP;
Heijiro Ojima, Kariya-shi, Aichi-ken, JP;
Abstract
Disclosed herein is a technique of removing metal contained in a solution through chelation, which makes it possible to preclude undesired aggregation and permit effective aggregation through an aggregating process. A surface active agent containing a hydrophobic group, a hydrophilic group and a chelating group is added to the solution to be processed, and subsequently an aggregating process is carried out. The chelating group chelates metal, the hydrophilic group prevents undesired aggregation, and the hydrophobic group is effectively aggregated in the aggregating process. Various uses are possible by selecting the charge of ligand.