1
Harold J Vinegar, Peter Veenstra, Steven Paul Giles, Chester L Sandberg, Frederick Henry Kreisler Rambow, Christopher Kelvin Harris, Lanny Gene Schoeling, Mark Gregory Picha, Etuan Zhang, Gary Beer, Fredrick Gordon Carl Jr, Taixu Bai, Dong Sub Kim, Michael David Fairbanks, Guillermo Pastor Sanz: Thermal processes for subsurface formations. Shell Oil Company, October 17, 2006: US07121342 (286 worldwide citation)

A process may include providing heat from one or more heaters to at least a portion of a subsurface formation. Heat may transfer from one or more heaters to a part of a formation. In some embodiments, heat from the one or more heat sources may pyrolyze at least some hydrocarbons in a part of a subsu ...


2
Chester L Sandberg, Albert J Highe, Jose Gamarra, Lawrence J White, Frank Orecchia, Ted M Aune: Electric cable having braidless polymeric ground plane providing fault detection. Tyco Electronics Corporation, September 11, 2001: US06288372 (204 worldwide citation)

An electrical cable device such as a heating cable includes a braidless ground return layer surrounding an inner jacket. The ground return layer is formed by a conductive polymer and a ground return wire connected to the conductive polymer. The polymer may be made suitably conductive for ground faul ...


3
Erwin K E Stanzel, Chester L Sandberg: Sheet heater. Raychem Corporation, Timothy H P Richardson, Herbert Burkard, March 22, 1988: US04733057 (196 worldwide citation)

A wall, floor or ceiling heater comprises a plurality of self regulating, preferably PTC conductive polymer, heater elements each of which is connected to two or more connection elements. The elements are held by a support. In a preferred embodiment the heater elements are positioned parallel to eac ...


4
Raymond Clarke, Chester L Sandberg: Fiber optic temperature sensing. Raychem Corporation, Lyon & Lyon, November 29, 1983: US04417782 (178 worldwide citation)

Fiber optic waveguides exhibiting a blackout phenomenon can be used for temperature sensing. A temperature sensing waveguide can be used in such applications as maintaining a material within a selected temperature range, freeze protection viscosity control of liquids in pipelines, leak detection of ...


5
Chester L Sandberg: Method of monitoring a heater for faults. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, October 6, 1987: US04698583 (175 worldwide citation)

Method for monitoring the electrical integrity of a heater and a novel heater for use in such a method. The heater includes an elongate heating member; an insulating jacket which encloses the heating member; a first electrically conductive member which surrounds the insulating jacket; a separating a ...


6
Chester L Sandberg: Method for monitoring a heater. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, November 15, 1988: US04785163 (170 worldwide citation)

Method for monitoring the electrical integrity of a heater and a novel heater for use in such a method. The heater includes an elongate heating member; an insulating jacket which encloses the heating member; a first electrically conductive member which surrounds the insulating jacket; a separating a ...


7
Harold J Vinegar, Peter Veenstra, Steven Paul Giles, Chester L Sandberg, Frederick Henry Kreisler Rambow, Christopher Kelvin Harris, Lanny Gene Schoeling, Mark Gregory Picha, Etuan Zhang, Gary Beer, Frederick Gordon Carl Jr, Taixu Bai, Dong Sub Kim, Michael David Fairbanks, Guillermo Pastor Sanz: Thermal processes for subsurface formations. Shell Oil Company, April 22, 2008: US07360588 (135 worldwide citation)

A process may include providing heat from one or more heaters to at least a portion of a subsurface formation. Heat may transfer from one or more heaters to a part of a formation. In some embodiments, heat from the one or more heat sources may pyrolyze at least some hydrocarbons in a part of a subsu ...


8
Timothy Dyer, Mark Richter, Rafael Andres BaƱados Contreras, Chester L Sandberg: Systems and methods for combined flow control and electricity generation. Energy Recovery, Fletcher Yoder P C, June 3, 2014: US08742604

Systems and methods for combined flow control and electricity generation are described. Various embodiments may include an energy recovery device adapted to produce an electric current. At least a portion of the electric current may be used to power a pump. A control system may be adapted to adjust ...


9
James C Thompson, Chester L Sandberg: Adaptive freeze, snow or ice protection system and method. Head Johnson & Kachigian P C, March 22, 2016: US09290273

Invention is an adaptive freeze, snow or ice protection system and method of operation that comprises an integrated expert system control module, a sensing means, a heating means, a control system means, an interconnection means and an energy supply system means where the protection system is suppli ...


10
Chester L Sandberg: Conductive matrix power control system with biasing to cause tripping of the system. Edward J Radio, Radio IP Law Group, April 2, 2013: US08410892

A three-terminal device (1, 21, 31) which can operate as an electrical switch, controlled by a third terminal (3, 24, 36/36A) that controls switching the device (1, 21, 31) from a closed circuit (conducting) state to an open circuit (insulating) state. Polymer and/or ceramic materials are loaded wit ...