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Inventor

Fengrui Lang

Inventor
Guangdong, CN

Overview

2→
Patents
2002–2019
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

C07Dprimary
C07DHeterocyclic compounds67%
Y02PClimate change mitigation technologies in the production or processing of goods33%
PatentTitleYear
10,358,417Method for preparing efficiently synthetic sitafloxacin intermediate (7S)-5-azaspiro[2.4]heptane-7-yl tert-butyl carbamate20196,479,672'Diastereoselective preparation of Michael adducts'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Patents assigned to BANYU PHARMA CO LTD (1)· patent assignee history
2002Patents assigned to MERCK & CO INC (1)· patent assignee history
2002Based in Piscataway, NJ, US· patent location history
2019Patents assigned to CHEN STONE GUANGZHOU CO LTD (1)· patent assignee history
2019Based in Guangdong, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BANYU PHARMA CO LTD12002
CHEN STONE GUANGZHOU CO LTD12019
MERCK & CO INC12002
Locations
LocationPatentsSpan
Guangdong, CN12019
Piscataway, New Jersey, US12002