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Inventor

Renfeng Richard Cao

Inventor
Houston, TX, US

Overview

2→
Patents
2012
Patent span
Electricity
Primary field (CPC H)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling25%
H01CResistors25%
H05BElectric heating25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
8,281,861'Circulated heated transfer fluid heating of subsurface hydrocarbon formations'20128,267,185'Circulated heated transfer fluid systems used to treat a subsurface formation'2012

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012Patents assigned to CAO RENFENG RICHARD (2)· patent assignee history
2012Patents assigned to NGUYEN SCOTT VINH (2)· patent assignee history
2012Patents assigned to SHELL OIL CO (2)· patent assignee history
2012Patents assigned to BASS RONALD MARSHALL (1)· patent assignee history
2012Patents assigned to CRUZ ANTONIO MARIA GUIMARAES LEITE (1)· patent assignee history
2012Based in Houston, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CAO RENFENG RICHARDself22012
NGUYEN SCOTT VINH22012
SHELL OIL CO22012
BASS RONALD MARSHALL12012
CRUZ ANTONIO MARIA GUIMARAES LEITE12012
Locations
LocationPatentsSpan
Houston, Texas, US22012