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Inventor

Na Cheng

Inventor
Nanjing, CN

Overview

3→
Patents
2016–2020
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.

C07Dprimary
C07DHeterocyclic compounds50%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry25%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%
PatentTitleYear
10,570,111Method of purifying cyclic ester20209,630,942'Technological method for synthesis of optically pure L-/D-lactide catalyzed by biogenic guanidine'20179,469,724'Method for synthesizing poly(butylene succinate-co-butylene adipate)'2016

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2016–2020Patents assigned to NANJING UNIVERSITY OF TECHNOLOGY (3)· patent assignee history
2016–2020Based in Nanjing, CN· patent location history
2017Based in Jiangsu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NANJING UNIVERSITY OF TECHNOLOGY32016–2020
Locations
LocationPatentsSpan
Nanjing, CN22016–2020
Jiangsu, CN12017