LexDanaLexDanabeta
Inventor

Chris Cheng

Inventor
Houston, TX, US

Overview

3→
Patents
2019–2020
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 3 as inventor

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

E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
10,830,020Tool assembly with a fluidic agitator and a coating202010,753,167Tool assembly with a fluidic agitator202010,450,819Tool assembly with a fluidic agitator2019

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2019–2020Patents assigned to BEIJING HUAMEI INC (3)· patent assignee history
2019–2020Patents assigned to CNPC USA CORP (3)· patent assignee history
2019–2020Based in Houston, TX, US· patent location history
2020Patents assigned to BEIJING HUAMEI INC CNPC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BEIJING HUAMEI INC32019–2020
CNPC USA CORP32019–2020
BEIJING HUAMEI INC CNPC12020
Locations
LocationPatentsSpan
Houston, Texas, US32019–2020