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Inventor

Xiufeng Yan

Inventor
Heilongjiang, CN

Overview

3→
Patents
2015–2017
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A61Pprimary
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations40%
C07JSteroids40%
C07DHeterocyclic compounds20%
PatentTitleYear
9,556,221'N-acetyl amino acid ESTER derivatives of betulin and preparation method thereof'20179,034,894'Derivate, preparation method and use of 10-methoxycamptothecin'20159,012,666'Method for producing 30-halogenated betulinic acid'2015

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2015–2017Patents assigned to UNIV NORTHEAST FORESTRY (2)· patent assignee history
2015Patents assigned to YAN XIUFENG (2)· patent assignee history
2015Patents assigned to DING WEIMIN (1)· patent assignee history
2015Patents assigned to JING LIJIA (1)· patent assignee history
2015Patents assigned to LI NAN (1)· patent assignee history
2015–2017Based in Heilongjiang, CN· patent location history
2015Based in Zhejiang, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV NORTHEAST FORESTRY22015–2017
YAN XIUFENGself22015
DING WEIMIN12015
JING LIJIA12015
LI NAN12015
Locations
LocationPatentsSpan
Heilongjiang, CN22015–2017
Zhejiang, CN12015