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. 08, 2015
Filed:
Oct. 31, 2011
Kyung Taek OH, Seoul, KR;
Jeong Min Yun, Seoul, KR;
Kyung Taek Oh, Seoul, KR;
Jeong Min Yun, Seoul, KR;
Abstract
Provided are a BAB-type tri-block copolymer including a polylactic acid (A) that is a hydrophobic block and polyethylene glycol (B) that is a hydrophilic block, a method of preparing the BAB-type tri-block copolymer including synthesizing a polylactic acid (A)-polyethylene glycol (B) di-block copolymer by a ring opening polymerization of a lactic acid monomer using a hydroxyl group of polyethylene glycol (B) as a polymerization initiator; and synthesizing a BAB-type tri-block copolymer by reacting the AB-type di-block copolymer with polyethylene glycol (B) including at least one carboxyl group at one or more terminals thereof in the presence of a coupling agent and a catalyst, and a drug delivery system using the BAB-type tri-block copolymer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile