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Inventor

Xiangwei Li

Inventor
Beijing, CN

Overview

2→
Patents
1997–2019
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

C07Dprimary
C07DHeterocyclic compounds33%
G06FElectric digital data processing33%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes33%
PatentTitleYear
10,354,270Interactive method, mobile terminal and server20195,637,735'Process for the preparation of gamma-butyrolactone'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to CHINA PETROCHEMICAL CORP (1)· patent assignee history
1997Patents assigned to RES INST PETROLEUM PROCESSING (1)· patent assignee history
1997–2019Based in Beijing, CN· patent location history
2019Patents assigned to SHELL INTERNET BEIJING SECURITY TECH CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHINA PETROCHEMICAL CORP11997
RES INST PETROLEUM PROCESSING11997
SHELL INTERNET BEIJING SECURITY TECH CO LTD12019
Locations
LocationPatentsSpan
Beijing, CN21997–2019