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. 05, 2021
Filed:
Apr. 04, 2018
Ishihara Sangyo Kaisha, Ltd., Osaka, JP;
Hiroshi Yoshizawa, Osaka, JP;
ISHIHARA SANGYO KAISHA, LTD., Osaka, JP;
Abstract
The present invention relates to a method for purifying a compound represented by the formula (I), the method including treating a mixture containing the compound represented by the formula (I) and a compound represented by the formula (II) with an aqueous solution of a basic compound. where, in the formula (I), Rrepresents a hydrogen atom or a chlorine atom; in the formula (II), R, Rand Rare the same or different from each other and represent a hydrogen, a chlorine atom or a fluorine atom independently, at least one of Rand Rrepresent a chlorine atom or a fluorine atom, and, in the case where Rrepresents a chlorine atom, Rrepresents a chlorine atom or a fluorine atom.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile