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Inventor

Zengying Han

Inventor
Chengdu, CN

Overview

2→
Patents
2015–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 2 as inventor

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

C07Dprimary
C07DHeterocyclic compounds33%
A01NPreservation of bodies of humans or animals or plants or parts thereof17%
A61KPreparations for medical, dental or toiletry purposes17%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations17%
C07BGeneral methods of organic chemistry17%
PatentTitleYear
11,066,403Solid form of azetidine derivative and preparation method therefor and use thereof20218,933,234'O-amino benzonitrile compounds, method for preparing same and uses thereof'2015

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2015Patents assigned to HANGZHOU UDRAGON CHEMICAL CO LTD (1)· patent assignee history
2015Based in Hangzhou, CN· patent location history
2021Patents assigned to SICHUAN KELUN BIOTECH BIOPHARMACEUTICAL CO LTD (1)· patent assignee history
2021Based in Chengdu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HANGZHOU UDRAGON CHEMICAL CO LTD12015
SICHUAN KELUN BIOTECH BIOPHARMACEUTICAL CO LTD12021
Locations
LocationPatentsSpan
Chengdu, CN12021
Hangzhou, CN12015