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. 13, 2011
Filed:
Mar. 21, 2008
Applicants:
Nobuto Minowa, Kanagawa, JP;
Nozomu Nakanishi, Kanagawa, JP;
Masaaki Mitomi, Kanagawa, JP;
Inventors:
Assignee:
Meiji Seika Kaisha Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for efficiently producing 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid, useful as a production intermediate of herbicide L-AMPB. The method comprises using a compound represented by the below formula (4): (4) where Rrepresents a Calkyl group, arylmethyl group, or substituted arylmethyl group.