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:
Jul. 18, 1995
Filed:
Dec. 22, 1993
Applicant:
Inventors:
Young H Kim, Seoul, KR;
Kwang D Ahn, Seoul, KR;
Yang K Han, Seoul, KR;
Soo H Kim, Seoul, KR;
Jeong B Kim, Seoul, KR;
Assignee:
Korea Institute of Science and Technology, Seoul, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528354 ; 525415 ; 528361 ;
Abstract
This specification provides a biodegradable poly(lactic acid) of a star-shaped structure having a high molecular weight of more than 30,000 with excellent tensile strength and a process for its preparation which comprises direct polycondensation of lactic acid using polyhydroxyl compound having at least four hydroxyl groups.