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:
Mar. 27, 1990
Filed:
Jun. 23, 1988
Tadao Shoji, Sakura, JP;
Sadao Takehara, Sakura, JP;
Toru Fujisawa, Kawaguchi, JP;
Masashi Osawa, Sakura, JP;
Hiroshi Ogawa, Kawaguchi, JP;
Yoshi Arai, Hasuda, JP;
Jitsuo Kurokawa, Ohmiya, JP;
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Kawamura Institute of Chemical Research, Saitama, JP;
Abstract
An optically active carboxylic acid derivative represented by the general formula ##STR1## wherein R represents a normal alkyl group having 1 to 20 carbon atoms, m and n represent 0 or 1 but are not 1 at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is a hydrogen atom, and Q* represents an optically active alkyl or 1-alkoxyethyl group having an asymmetric carbon atom.