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:
Jul. 26, 2011
Filed:
Jun. 29, 2007
Yoichi Umehara, Yokohama, JP;
Takeshi Minami, Yokohama, JP;
Susumu Yamamoto, Yokohama, JP;
Haruto Kobayashi, Yokohama, JP;
Yasuo Hosono, Yokohama, JP;
Yoichi Umehara, Yokohama, JP;
Takeshi Minami, Yokohama, JP;
Susumu Yamamoto, Yokohama, JP;
Haruto Kobayashi, Yokohama, JP;
Yasuo Hosono, Yokohama, JP;
Chiyoda Corporation, Yokohama-shi, JP;
Abstract
An iodide compound is adsorbed and removed from an organic acid containing the iodide compound as an impurity by passing the organic acid through a packed bed of a cation-exchange resin having silver ion carried thereon at 50° C. or lower. The cation-exchange resin is a macroporous-type resin with an average particle size of 0.3 to 0.6 mm and an average pore size of 15 to 28 nm, and silver ion substitutes for 40 to 60% of the active site.