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:
Feb. 16, 2021
Filed:
Mar. 02, 2019
Xuechuan Wang, Xi'an, CN;
Mengdi Hou, Xi'an, CN;
Xinhua Liu, Xi'an, CN;
Chengyuan Liang, Xi'an, CN;
Ouyang Yue, Xi'an, CN;
Manhui Zheng, Xi'an, CN;
Xing Zhu, Xi'an, CN;
Qingxin Han, Xi'an, CN;
Ji LI, Xi'an, CN;
Huijie Zhang, Xi'an, CN;
Taotao Qiang, Xi'an, CN;
Xuechuan Wang, Xi'an, CN;
Mengdi Hou, Xi'an, CN;
Xinhua Liu, Xi'an, CN;
Chengyuan Liang, Xi'an, CN;
Ouyang Yue, Xi'an, CN;
Manhui Zheng, Xi'an, CN;
Xing Zhu, Xi'an, CN;
Qingxin Han, Xi'an, CN;
Ji Li, Xi'an, CN;
Huijie Zhang, Xi'an, CN;
Taotao Qiang, Xi'an, CN;
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY, Xi'an, CN;
Abstract
A method for preparing a collagen from a chromium-containing tanned leather waste is disclosed. The method includes acid dechromation, obtaining a collagen aggregate, and converting the collagen aggregate to the collagen. The method also includes a reaction in a supercritical carbon dioxide reactor.