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Chester L. Sandberg
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Palo Alto, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Adaptive freeze, snow or ice protection system and method
Patent number
9,290,273
Issue date
Mar 22, 2016
James C. Thompson
B64 - AIRCRAFT AVIATION COSMONAUTICS
Information
Patent Grant
Perforated electrical conductors for treating subsurface formations
Patent number
9,051,829
Issue date
Jun 9, 2015
Shell Oil Company
Xueying Xie
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
System to connect and multiplex sensor signals
Patent number
8,964,360
Issue date
Feb 24, 2015
Jonathan D. Trout
G01 - MEASURING TESTING
Information
Patent Grant
Systems and methods for treating a subsurface formation with electr...
Patent number
8,881,806
Issue date
Nov 11, 2014
Shell Oil Company
Xueying Xie
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Systems and methods for combined flow control and electricity gener...
Patent number
8,742,604
Issue date
Jun 3, 2014
Energy Recovery, Inc.
Timothy Dyer
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Conductive matrix power control system with biasing to cause trippi...
Patent number
8,410,892
Issue date
Apr 2, 2013
Chester L. Sandberg
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Temperature limited heaters with high power factors
Patent number
8,355,623
Issue date
Jan 15, 2013
Shell Oil Company
Harold J. Vinegar
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High voltage temperature limited heaters
Patent number
8,238,730
Issue date
Aug 7, 2012
Shell Oil Company
Chester Ledlie Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Insulated conductor temperature limited heaters
Patent number
8,224,164
Issue date
Jul 17, 2012
Shell Oil Company
Chester Ledlie Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Variable frequency temperature limited heaters
Patent number
8,224,163
Issue date
Jul 17, 2012
Shell Oil Company
Chester Ledlie Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Temperature limited heaters for heating subsurface formations or we...
Patent number
8,200,072
Issue date
Jun 12, 2012
Shell Oil Company
Harold J. Vinegar
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Mechanical methods for charging a car battery, related systems and...
Patent number
8,174,231
Issue date
May 8, 2012
Altairmano, Inc.
Chet Sandberg
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Insulated conductor temperature limited heater for subsurface heati...
Patent number
7,831,133
Issue date
Nov 9, 2010
Shell Oil Company
Harold J. Vinegar
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
In situ conversion process utilizing a closed loop heating system
Patent number
7,575,052
Issue date
Aug 18, 2009
Shell Oil Company
Chester Ledlie Sandberg
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Temperature limited heater with a conduit substantially electricall...
Patent number
7,559,367
Issue date
Jul 14, 2009
Shell Oil Company
Harold J. Vinegar
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Variable frequency temperature limited heaters
Patent number
7,490,665
Issue date
Feb 17, 2009
Shell Oil Company
Chester Ledlie Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Temperature limited heaters with relatively constant current
Patent number
7,481,274
Issue date
Jan 27, 2009
Shell Oil Company
Harold J. Vinegar
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Temperature limited heaters using modulated DC power
Patent number
7,431,076
Issue date
Oct 7, 2008
Shell Oil Company
Chester Ledlie Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Thermal processes for subsurface formations
Patent number
7,360,588
Issue date
Apr 22, 2008
Shell Oil Company
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Grant
Start-up of temperature limited heaters using direct current (DC)
Patent number
7,353,872
Issue date
Apr 8, 2008
Shell Oil Company
Chester Ledlie Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Thermal processes for subsurface formations
Patent number
7,121,342
Issue date
Oct 17, 2006
Shell Oil Company
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Grant
Conductor-in-conduit temperature limited heaters
Patent number
7,121,341
Issue date
Oct 17, 2006
Shell Oil Company
Harold J. Vinegar
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electric cable having braidless polymeric ground plane providing fa...
Patent number
6,288,372
Issue date
Sep 11, 2001
Tyco Electronics Corporation
Chester L. Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Self-regulating heater employing reactive components
Patent number
4,849,611
Issue date
Jul 18, 1989
Raychem Corporation
Wells Whitney
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method for monitoring a heater
Patent number
4,785,163
Issue date
Nov 15, 1988
Raychem Corporation
Chester L. Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method of picking up and placing gel material
Patent number
4,750,962
Issue date
Jun 14, 1988
Raychem Corporation
David Haygood
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Sheet heater
Patent number
4,733,057
Issue date
Mar 22, 1988
Raychem Corporation
Erwin K. E. Stanzel
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Method of monitoring a heater for faults
Patent number
4,698,583
Issue date
Oct 6, 1987
Raychem Corporation
Chester L. Sandberg
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Fiber optic temperature sensing
Patent number
4,417,782
Issue date
Nov 29, 1983
Raychem Corporation
Raymond Clarke
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
SYSTEM AND METHOD OF PRODUCING OIL
Publication number
20150198025
Publication date
Jul 16, 2015
Precision Combustion, Inc.
Benjamin Baird
E21 - EARTH DRILLING MINING
Information
Patent Application
SYSTEM TO CONNECT AND MULTIPLEX SENSOR SIGNALS
Publication number
20140218882
Publication date
Aug 7, 2014
Chet Sandberg
G01 - MEASURING TESTING
Information
Patent Application
Systems and Methods for Combined Flow Control and Electricity Gener...
Publication number
20130328310
Publication date
Dec 12, 2013
Timothy Dyer
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
MINERAL INSULATED SKIN EFFECT HEATING CABLE
Publication number
20130206748
Publication date
Aug 15, 2013
Harold J. Vinegar
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
HIGH VOLTAGE TEMPERATURE LIMITED HEATERS
Publication number
20130043029
Publication date
Feb 21, 2013
Shell Oil Company
Harold J. Vinegar
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
CONDUCTIVE MATRIX POWER CONTROL SYSTEM WITH BIASING TO CAUSE TRIPPI...
Publication number
20120044041
Publication date
Feb 23, 2012
Chester L. Sandberg
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SYSTEMS AND METHODS FOR TREATING A SUBSURFACE FORMATION WITH ELECTR...
Publication number
20100147522
Publication date
Jun 17, 2010
Xueying Xie
E21 - EARTH DRILLING MINING
Information
Patent Application
PERFORATED ELECTRICAL CONDUCTORS FOR TREATING SUBSURFACE FORMATIONS
Publication number
20100147521
Publication date
Jun 17, 2010
Xueying Xie
E21 - EARTH DRILLING MINING
Information
Patent Application
CONTINUOUS SUBSURFACE HEATER TEMPERATURE MEASUREMENT
Publication number
20090189617
Publication date
Jul 30, 2009
David Burns
E21 - EARTH DRILLING MINING
Information
Patent Application
ELECTRICALLY ISOLATING INSULATED CONDUCTOR HEATER
Publication number
20090120646
Publication date
May 14, 2009
Dong Sub Kim
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
MECHANICAL METHODS FOR CHARGING A CAR BATTERY, RELATED SYSTEMS AND...
Publication number
20080297109
Publication date
Dec 4, 2008
ALTAIRNANO, INC.
Chet Sandberg
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Temperature limited heater with a conduit substantially electricall...
Publication number
20080017370
Publication date
Jan 24, 2008
Harold J. Vinegar
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Thermal processes for subsurface formations
Publication number
20070131411
Publication date
Jun 14, 2007
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Application
Insulated conductor temperature limited heater for subsurface heati...
Publication number
20070108201
Publication date
May 17, 2007
Harold J. Vinegar
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
In situ conversion process utilizing a closed loop heating system
Publication number
20070045266
Publication date
Mar 1, 2007
Chester Ledlie Sandberg
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Temperature limited heaters with relatively constant current
Publication number
20060005968
Publication date
Jan 12, 2006
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Application
Temperature limited heaters with high power factors
Publication number
20050269313
Publication date
Dec 8, 2005
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Application
Temperature limited heaters using modulated DC power
Publication number
20050269089
Publication date
Dec 8, 2005
Chester Ledlie Sandberg
E21 - EARTH DRILLING MINING
Information
Patent Application
Start-up of temperature limited heaters using direct current (DC)
Publication number
20050269077
Publication date
Dec 8, 2005
Chester Ledlie Sandberg
E21 - EARTH DRILLING MINING
Information
Patent Application
Variable frequency temperature limited heaters
Publication number
20050269093
Publication date
Dec 8, 2005
Chester Ledlie Sandberg
E21 - EARTH DRILLING MINING
Information
Patent Application
Thermal processes for subsurface formations
Publication number
20050051327
Publication date
Mar 10, 2005
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Application
Variable frequency temperature limited heaters
Publication number
20050006097
Publication date
Jan 13, 2005
Chester Ledlie Sandberg
E21 - EARTH DRILLING MINING
Information
Patent Application
Conductor-in-conduit temperature limited heaters
Publication number
20040177966
Publication date
Sep 16, 2004
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Application
Temperature limited heaters for heating subsurface formations or we...
Publication number
20040146288
Publication date
Jul 29, 2004
Harold J. Vinegar
E21 - EARTH DRILLING MINING
Information
Patent Application
High voltage temperature limited heaters
Publication number
20040144540
Publication date
Jul 29, 2004
Chester Ledlie Sandberg
E21 - EARTH DRILLING MINING
Information
Patent Application
Insulated conductor temperature limited heaters
Publication number
20040140096
Publication date
Jul 22, 2004
Chester Ledlie Sandberg
E21 - EARTH DRILLING MINING