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:
Nov. 25, 1986
Filed:
Nov. 06, 1985
Shoji Fujinawa, Narashino, JP;
Isao Hashiba, Ichikawa, JP;
Kenji Suzuki, Narashino, JP;
Syuzi Tsuchiya, Chiba, JP;
Yasuo Takakuwa, Funabashi, JP;
Nissan Chemical Industries Ltd., Tokyo, JP;
Abstract
A process for preparing an optically active 2-(4-hydroxyphenoxy)propionic acid compound, which comprises reacting an optically active compound having the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, and M is a hydrogen atom or an alkali metal atom, with hydroquinone or an alkali metal salt of hydroquinone, in the presence of an alkali metal hydroxide and water, and precipitating optically active disodium 2-(4-hydroxyphenoxy)propionate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile