Patent · US Active

Method for preparing collagen aggregate and collagen from chromium-containing tanned leather wastes by combined acid-enzyme controlled degradation technology

US10919952B2 · kind B2 · utility

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4Claims

0Family size

Assignee

SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY · CN

Inventors

Xuechuan Wang · Xi'an, CN
Mengdi Hou · Xi'an, CN
Xinhua Liu · Jiangmen, CN
Chengyuan Liang · Xi'an, CN
Ouyang Yue · Xi'an, CN
Manhui Zheng · Xi'an, CN
Xing Zhu · Nanjing, CN
Qingxin Han · Xi'an, CN
Ji Li · Beijing, CN
Huijie Zhang · Bochum, DE
Taotao Qiang · Xi'an, CN

Key dates

Filing date	Mar 2, 2019
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Oct 23, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/54
WIPO fieldBiotechnology
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.