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:
Aug. 20, 1991
Filed:
Mar. 29, 1990
Applicant:
Inventors:
Kimie Nagai, Tokyo, JP;
Schuichi Naijoh, Tokyo, JP;
Ayako Kurotaki, Tokyo, JP;
Koro Shirane, Tokyo, JP;
Chozo Inoue, Tokyo, JP;
Assignee:
Showa Denko K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558401 ; 560 39 ; 558392 ; 25229966 ; 25229901 ;
Abstract
A novel amino acid derivative is disclosed, which is produced using a relatively inexpensive amino acid as a starting material for an optically active moiety and shows a chiral nematic phase or a chiral smectic phase over a wide temperature range around room temperature. A process for producing the amino acid derivative is also disclosed.