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:
Feb. 22, 1994
Filed:
Oct. 23, 1990
Applicant:
Inventors:
Hiroyuki Itoh, Kanagawa, JP;
Takafumi Ishii, Kanagawa, JP;
Takehiro Toyooka, Kanagawa, JP;
Tetsuo Satoh, Tokyo, JP;
Assignee:
Nippon Oil Company. Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; F21V / ; G02F / ;
U.S. Cl.
CPC ...
2522995 ; 25229901 ; 252582 ; 359104 ; 359328 ;
Abstract
A nonlinear optical material having a high nonlinear optical constant useful for frequency doubler of laser beam which comprises a chiral smectic C liquid crystalline polyester consisting essentially of the structural units having the general formulae (A), (B) and (C); ##STR1## Wherein X is a structural unit selected from the group consisting of ##STR2## Wherein Y is a group having at least one optically active carbon and the total carbon number of Y is 3-12. ##STR3## wherein n is an integer of 2-10.