英文感谢信专利名称：Birch bark processing and the isolation of
蜻蜓画
natural products from birch bark
发明人：Pavel A. Krasutsky,Robert M. Carlson,Vitaliy
V. Nesterenko,Igor M. Kolomitsyn,Chris F.
万能好评Edwardson
申请号：US09938173
申请日：20010823
公开号：US20020043577A1
宁夏大学研究生院官网
公开日：
草莓
20020418
专利内容由知识产权出版社提供前山小学
春天的祝福
专利附图：
摘要：The invention provides methods for parating outer birch bark from inner
birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.古典音乐家
申请人：REGENTS OF THE UNIVERSITY OF MINNESOTA
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