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. 20, 2004
Filed:
Mar. 28, 2001
Applicant:
Inventors:
Young-Ro Byun, Kwangju, KR;
Sang-Yoon Kim, Seoul, KR;
Sun-Hee Kim, Seoul, KR;
Yong-Doo Choi, Kwangju, KR;
In-Suk Han, Salt Lake City, UT (US);
Kwang-Sun Lee, Seoul, KR;
Chul-Hee Kim, Sungnam-shi, KR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/14 ; A61K 9/16 ;
U.S. Cl.
CPC ...
A61K 9/14 ; A61K 9/16 ;
Abstract
The present invention relates to a controlled drug release system in which a certain ratio or retinoic acid is incorporated into a microsphere comprising biodegradable polymer and amphoteric block copolymer having both hydrophilic and hydrophobic groups.
Byun, Young-Ro. (2004). Controlled drug release system of retinoic acid (U.S. Patent No. 6764698). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6764698
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile