Abstract: The present invention provides seeded rod (SR) nanostructure systems including an elongated structure embedded with a seed structure being a core/shell structure or a single-material rod element. The SR systems disclosed herein are suitable for use in a variety of electronic and optical devices.
Type:
Application
Filed:
September 15, 2011
Publication date:
May 9, 2013
Applicant:
YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIV. OF JERUSALEM LTD.
Inventors:
Uri Banin, Adiel Zimran, Itai Lieberman, Amit Sitt
Abstract: Absorbable ocular inserts fabricated of materials that are biologically inert, biodegradable, non-allergenic, and insoluble in tear liquid, and a method for delivering substances to the eye using the ocular insert, are disclosed. In embodiment A of the invention, the insert and method include the covalent attachment of a carboxylic acid-containing substance to be delivered to a polymer that contains pendent carboxylic acid groups, through anhydride linkages. The drug is released over time by hydrolysis of the anhydride bonds. In embodiment B of the invention, a substance to be delivered (whether or not it contains a carboxylic acid group) is dispersed within an anhydride polymer or copolymer matrix and the mixture is formed into an appropriately shaped article for ocular delivery.
Type:
Grant
Filed:
June 5, 1995
Date of Patent:
August 26, 1997
Assignee:
Yissum Research Development Company of the Hebrew Univ. of Jerusalem