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Inventor

Sijian Chen

Inventor
Shandong, CN

Overview

2→
Patents
2006–2021
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.

B01Dprimary
B01DSeparation17%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
C10GCracking hydrocarbon oils17%
C10MLubricating compositions17%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions17%
H03KPulse technique17%
PatentTitleYear
10,954,468Method for regeneration of used lubricating oils20217,053,658'Apparatus for circuit with keeper'2006

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2006Patents assigned to NAT SEMICONDUCTOR CORP (1)· patent assignee history
2006Based in Austin, TX, US· patent location history
2021Patents assigned to QINGDAO INST BIOENERGY & BIOPROCESS TECH CAS (1)· patent assignee history
2021Based in Shandong, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NAT SEMICONDUCTOR CORP12006
QINGDAO INST BIOENERGY & BIOPROCESS TECH CAS12021
Locations
LocationPatentsSpan
Shandong, CN12021
Austin, Texas, US12006