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. 03, 1991
Filed:
Jan. 16, 1990
Applicant:
Inventors:
Jun Nakauchi, Tokyo, JP;
Mioko Uematsu, Kawasaki, JP;
Keiichi Sakashita, Akishima, JP;
Yoshitaka Kageyama, Tokyo, JP;
Kenji Mori, Tokyo, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
25229961 ; 25229965 ; 25229966 ; 25229967 ; 549292 ; 549293 ; 544298 ; 544335 ;
Abstract
An optically active compound having a .delta.-valerolactone ring which is a ferroelectric liquid crystal and is represented by the following general formula (I): ##STR1## wherein m is an integer of from 1 to 8, Z is a group represented by the following formula: ##STR2## in which each of l and k is a number of 1 or 2 and l and k satisfy the requirement of 2.ltoreq.(l+k).ltoreq.3,
Nakauchi, Jun. (1991). Optically active compound having xi-valerolactone ring and liquid (U.S. Patent No. 5045228). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5045228
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile