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:
Jun. 05, 2012
Filed:
May. 02, 2007
Dae-duk Kim, Kwanak-gu, KR;
Jeong-yeon Kang, Seoncho-gu, KR;
Chung-wook Chung, Yuseong-gu, KR;
In-soo Yoon, Gwanak-gu, KR;
Sun-young Kim, Gwanak-gu, KR;
Byung-soon Park, Gangnam-gu, KR;
Jong-hyuk Sung, Gwanak-gu, KR;
Dae-Duk Kim, Kwanak-gu, KR;
Jeong-Yeon Kang, Seoncho-gu, KR;
Chung-Wook Chung, Yuseong-gu, KR;
In-Soo Yoon, Gwanak-gu, KR;
Sun-Young Kim, Gwanak-gu, KR;
Byung-Soon Park, Gangnam-gu, KR;
Jong-Hyuk Sung, Gwanak-gu, KR;
Seoul National University Industry Foundation, Seoul, KR;
Prostemics Co., Ltd., Seoul, KR;
Abstract
Provided is a preparation method of a porous hyaluronic acid sponge comprising the steps of: dissolving hyaluronic acid in an aqueous sodium hydroxide solution; adding an epoxy-based crosslinking agent to the resultant aqueous sodium hydroxide solution in which hyaluronic acid is dissolved and homogenizing the hyaluronic acid solution; hydrogelating the homogenized hyaluronic acid solution; washing the hydrogelated hyaluronic acid hydrogel with ultrapure water; swelling the washed hyaluronic acid hydrogel to attain porosity; and freeze-drying the hyaluronic acid hydrogel to obtain a porous hyaluronic acid sponge.