Patents by Inventor Charles Davidson

Charles Davidson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150096553
    Abstract: The invention relates to a hexagonal parabolic solar concentrator consisting of the union of different radial layers of support cells formed by two types of pre-assembled modules, wherein said pre-assembled modules are made up of bars and connecting elements. Using these pre-assembled modules significantly reduces the time for manufacture of the components and for parabolic concentrator assembling and the adjustment time for the flat mirrors supporting cells in order to generate the curve of parabola.
    Type: Application
    Filed: January 31, 2013
    Publication date: April 9, 2015
    Inventors: Ernst Kussul, Tetyana Baydyk, José Manuel Saniger Blesa, Neil Charles Davidson, Felipe de Jesús Lara Rosano, Jorge Luis Rrodriguez Mendoza
  • Patent number: 8993551
    Abstract: A nutritional supplement composed of phytosterols, anti-oxidants, and other complexes, including essential fatty acids, amino acids, peptides, proline rich polypeptides and digestive enzymes is described. The nutritional supplement may be used by individuals suffering from or at risk of developing immune system diseases; breast cancer, colon and prostate cancer; HIV infection; high cholesterol; or enlarged prostate. In the preferred form, the invention comprises phytosterols and antioxidants, together with essential fatty acids derived from amino acids, short chain peptides, proline rich polypeptides and digestive enzymes, and a microcellulose filler.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: March 31, 2015
    Inventors: Alan Ferguson, John Charles Davidson
  • Patent number: 8974260
    Abstract: A cutter assembly includes cutting blades spaced equidistant around a motor housing cover. The blades' cutting edges are orthogonal to a plane rotated around a housing centerline axis. Each cutting blade is ninety degrees from its adjacent cutting blades with respect to the housing centerline axis, and forty-five degrees from an axis orthogonal to the housing centerline. An embodiment includes a hinged cylindrical cover blade base locking around the housing for existing motor housings. Each cutting blade provides a forward oriented surface having a convex portion, an aft oriented surface having a convex portion, and a tip end. An embodiment provides a cutting blade tip end angle with respect to a housing centerline axis equal to the motor propeller blade pitch with respect to the same axis.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: March 10, 2015
    Inventor: Charles Davidson
  • Patent number: 8596300
    Abstract: For pulsed injection of liquids into the ground, the tool has a rotating cylinder, having through-slots. The tool has an insert, which is pressed against the rotating cylinder. As the cylinder rotates, the slots in the rotor cover/uncover the slots in the insert, creating the required pulses. By suitably shaping the slots, the pulses can have a fast rise-time from closed to open. The insert is shaped to minimize flow interference.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: December 3, 2013
    Assignee: Wavefront Reservoir Technologies Ltd.
    Inventors: Benjamin Eric Graham, Andre Michael Masse, Brett Charles Davidson
  • Patent number: 8567505
    Abstract: When injecting liquids into the ground, imposing pulses on the injected liquid is effective to increase penetration and saturation of the ground. Imposing suckback onto the pulses is effective to make the liquid in the ground behave as a coherent unitary body, surging out and back each pulse, and to super-saturate the ground. The tool includes a suckback-chamber, which is timed to open to the ground formation just as the pulse-valve closes. A biasser (e.g a spring) drives the chamber open and sucks in some of the liquid from the ground. The chamber is then emptied, back to the ground, by the rising pressure as the pulsing tool is recharged. The suckback-chamber can be added to any type of pulsing tool.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: October 29, 2013
    Assignee: Wavefront Reservoir Technologies Ltd.
    Inventor: Brett Charles Davidson
  • Patent number: 8544552
    Abstract: For injecting e.g. water into ground formation around a borehole, and for superimposing pulses onto the outflow of the injected water, it is important that the pulses have a rapid rise-time. A piston is connected to a pulse-valve of the tool. A bias spring urges the piston towards its closed position. The piston is urged towards the open position by a differential PDAF between the supplied accumulator-pressure and the in-ground formation-pressure. When the pulse-valve is open, the PDAF is falling, until the force of the spring closes the pulse-valve. Then the PDAF rises, but now the PDAF acts over only a small area of the piston. When the PDAF is high enough to ease the pulse-valve open, suddenly the whole area of the piston is exposed to the PDAF, whereby the pulse-valve opens violently.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: October 1, 2013
    Assignee: Wavefront Reservoir Technologies Ltd.
    Inventor: Brett Charles Davidson
  • Patent number: 8316944
    Abstract: Applying pulses to liquid being injected into wells makes the ground/liquid formation more homogenous, and more penetrative. A system for automatically creating the pulses is described, in which a piston is acted upon by the pressure differential (PDAF) between the supplied accumulator pressure and the formation pressure. The changing levels of the PDAF as the pulse-valve opens (and the PDAF falls) and as the pulse-valve closes (and the PDAF rises) are harnessed to actuate an inhibitor that restrain movement of the valve-piston, and delays opening and/or closing of the pulse-valve. The pulse-valve is engineered to open explosively, and thus create penetrative porosity-waves in the formation. The system includes a pressurized-gas accumulator, and injection-check-valve which can maintain pulsing even when the ground is not saturated, and the static injector, which allows non-pulsed injection only when the ground is non-saturated.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: November 27, 2012
    Assignee: Wavefront Reservoir Technologies Ltd.
    Inventors: Ronald E. Pringle, Mahendra Samaroo, Brett Charles Davidson, John Michael Warren, Jason C. Mailand
  • Patent number: 8061421
    Abstract: During a surge-pulsing operation in a borehole (e.g an oil-well undergoing remediation) liquid is stored under pressure upstream of a valve, and then released through the valve suddenly enough to create a seismic wave, which propagates into the formation around the borehole, and assists the surge-pulsing to improve the conductivity and liquid-injectability of the formation. The downhole valve achieves the rapid-opening requirement by virtue of its geometrical layout, as dictated by the strictures of the downhole environment.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: November 22, 2011
    Assignee: Wavefront Energy & Environmental Services Inc.
    Inventors: Mahendra Samaroo, Ronald E. Pringle, Thomas James Timothy Spanos, Brett Charles Davidson
  • Publication number: 20110259575
    Abstract: When injecting liquids into the ground, imposing pulses on the injected liquid is effective to increase penetration and saturation of the ground. Imposing suckback onto the pulses is effective to make the liquid in the ground behave as a coherent unitary body, surging out and back each pulse, and to super-saturate the ground. The tool includes a suckback-chamber, which is timed to open to the ground formation just as the pulse-valve closes. A biasser (e.g a spring) drives the chamber open and sucks in some of the liquid from the ground. The chamber is then emptied, back to the ground, by the rising pressure as the pulsing tool is recharged. The suckback-chamber can be added to any type of pulsing tool.
    Type: Application
    Filed: September 24, 2009
    Publication date: October 27, 2011
    Inventor: Brett Charles Davidson
  • Publication number: 20110211911
    Abstract: A method is taught for applying vacuum pulses to enhance multiphase vacuum extraction of vapours and liquids from contaminated subsurface wells. The method involves first initiating continuous multiphase vacuum extraction from the subsurface well. Then one or more short vacuum pulses are imparted to the subsurface environment, to momentarily interrupt flow of vapours and liquids in the subsurface well. Time is allowed for a vacuum to build up in the extraction apparatus; and then the vacuum build up is rapidly released to momentarily increase velocity of vapours and liquids being extracted from the subsurface well. A device is further taught for imparting vacuum pulses to enhance multiphase extraction from contaminated subsurface wells, comprising a vacuum pulse tool having an inlet in fluid communication with the subsurface well and an outlet and one or more multiphase extraction vacuum pumps, connected to the outlet of the vacuum pulse tool.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 1, 2011
    Applicant: Wavefront Technology Solutions Inc.
    Inventors: Andre Michael Masse, Patrick Moss Hicks, Brett Charles Davidson
  • Publication number: 20110082533
    Abstract: A stent apparatus with at least one side opening which may further comprise an extendable stent portion laterally extending from the side opening and at least partly in registry with the wall of the side opening. Devices constructed in accordance with the invention include, singularly or in combination, a main expandable stent comprising at least one substantially circular side opening located between its proximal and distal end openings, which side opening may further comprise an expandable portion extending radially outward from the edges of the side opening; and a branch stent comprising proximal and distal end openings and which may further comprise a contacting portion at its proximal end, and which may optionally be constructed to form either a perpendicular branch or a non-perpendicular branch when inserted through a side opening of the main stent.
    Type: Application
    Filed: December 14, 2010
    Publication date: April 7, 2011
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Gil Vardi, Charles Davidson
  • Publication number: 20110059930
    Abstract: A nutritional supplement composed of phytosterols, anti-oxidants, and other complexes, including essential fatty acids, amino acids, peptides, proline rich polypeptides and digestive enzymes is described. The nutritional supplement may be used by individuals suffering from or at risk of developing immune system diseases; breast cancer, colon and prostate cancer; HIV infection; high cholesterol; or enlarged prostate. In the preferred form, the invention comprises phytosterols and antioxidants, together with essential fatty acids derived from amino acids, short chain peptides, proline rich polypeptides and digestive enzymes, and a microcellulose filler.
    Type: Application
    Filed: March 2, 2010
    Publication date: March 10, 2011
    Inventors: Alan Ferguson, John Charles Davidson
  • Publication number: 20110048724
    Abstract: Applying pulses to liquid being injected into wells makes the ground/liquid formation more homogenous, and more penetrative. A system for automatically creating the pulses is described, in which a piston is acted upon by the pressure differential (PDAF) between the supplied accumulator pressure and the formation pressure. The changing levels of the PDAF as the pulse-valve opens (and the PDAF falls) and as the pulse-valve closes (and the PDAF rises) are harnessed to actuate an inhibitor that restrain movement of the valve-piston, and delays opening and/or closing of the pulse-valve. The pulse-valve is engineered to open explosively, and thus create penetrative porosity-waves in the formation. The system includes a pressurized-gas accumulator, and injection-check-valve which can maintain pulsing even when the ground is not saturated, and the static injector, which allows non-pulsed injection only when the ground is non-saturated.
    Type: Application
    Filed: January 19, 2009
    Publication date: March 3, 2011
    Applicant: WAVEFRONT RESERVOIR TECHNOLOGIES LTD.
    Inventors: Ronald E. Pringle, Mahenrda Samaroo, Brett Charles Davidson, John Michael Warren, Jason C. Mailand
  • Publication number: 20110036581
    Abstract: For injecting e.g. water into ground formation around a borehole, and for superimposing pulses onto the outflow of the injected water, it is important that the pulses have a rapid rise-time. A piston is connected to a pulse-valve of the tool. A bias spring urges the piston towards its closed position. The piston is urged towards the open position by a differential PDAF between the supplied accumulator-pressure and the in-ground formation-pressure. When the pulse-valve is open, the PDAF is falling, until the force of the spring closes the pulse-valve. Then the PDAF rises, but now the PDAF acts over only a small area of the piston. When the PDAF is high enough to ease the pulse-valve open, suddenly the whole area of the piston is exposed to the PDAF, whereby the pulse-valve opens violently.
    Type: Application
    Filed: April 30, 2009
    Publication date: February 17, 2011
    Applicant: Wavefront Reservoir Technologies Ltd.
    Inventor: Brett Charles Davidson
  • Patent number: 7850725
    Abstract: The present invention concerns novel stent apparatuses for use in treating lesions at or near the bifurcation point in bifurcated cardiac, coronary, renal, peripheral vascular, gastrointestinal, pulmonary, urinary and neurovascular vessels and brain vessels. More particularly, the invention concerns a stent apparatus with at least one side opening which may further comprise an extendable stent portion laterally extending from the side opening and at least partly in registry with the wall of the side opening.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: December 14, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Gil Vardi, Charles Davidson
  • Publication number: 20100269914
    Abstract: For pulsed injection of liquids into the ground, the tool has a rotating cylinder, having through-slots. The tool has an insert, which is pressed against the rotating cylinder. As the cylinder rotates, the slots in the rotor cover/uncover the slots in the insert, creating the required pulses. By suitably shaping the slots, the pulses can have a fast rise-time from closed to open. The insert is shaped to minimize flow interference.
    Type: Application
    Filed: April 21, 2010
    Publication date: October 28, 2010
    Applicant: Wavefront Reservoir Technologies Ltd.
    Inventors: Benjamin Eric Graham, Andre Michael Masse, Brett Charles Davidson
  • Patent number: 7644759
    Abstract: For extracting a liquid (such as oil) from a porous medium, the liquid is subjected to pulses that propagate through the liquid flowing through the pores of the medium. The pulses cause momentary surges in the velocity of the liquid, which keeps the pores open. The pulses can be generated in the production well, or in a separate excitation well. If the pulses travel with the liquid, the velocity of travel of the liquid through the pores can be increased. The solid matrix is kept stationary, and the pulses move through the liquid. The pulses in the liquid can be generated directly in the liquid, or indirectly in the liquid via a localized area of the solid matrix.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: January 12, 2010
    Inventor: Brett Charles Davidson
  • Publication number: 20080302528
    Abstract: During a surge-pulsing operation in a borehole (e.g an oil-well undergoing remediation) liquid is stored under pressure upstream of a valve, and then released through the valve suddenly enough to create a seismic wave, which propagates into the formation around the borehole, and assists the surge-pulsing to improve the conductivity and liquid-injectability of the formation. The downhole valve achieves the rapid-opening requirement by virtue of its geometrical layout, as dictated by the strictures of the downhole environment.
    Type: Application
    Filed: September 18, 2006
    Publication date: December 11, 2008
    Inventors: Mahendra Samaroo, Ronald E. Pringle, Thomas James Timothy Spanos, Brett Charles Davidson
  • Patent number: 7387639
    Abstract: A stent delivery catheter comprises a catheter body having a proximal end, a distal end, and a guidewire lumen extending from the distal end to at least part way between the proximal end and the distal end. A balloon is disposed over the catheter body near the distal end, and a stent is positioned over the balloon. The stent has a proximal end, a distal end, and a side opening between the proximal end and the distal end. A side sheath is coupled to the catheter body and has a proximal end, a distal end, and a guidewire lumen extending between the proximal end and the distal end. The proximal end of the side sheath is located between the proximal end of the catheter body and the balloon, and the side sheath exits out of the side opening of the stent.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: June 17, 2008
    Assignee: Advanced Stent Technologies, Inc.
    Inventors: Henry Bourang, Udayan G. Patel, Gil M. Vardi, Sepehr Fariabi, Eric Williams, Javier Sagastegui, Charles Davidson
  • Publication number: 20070258945
    Abstract: The present invention relates to methods of using Granulocyte Colony Stimulating Factor (G-CSF) polypeptide in conjunction with reperfusion therapy in the treatment of acute myocardial infarction or other ischemic events. This treatment can be used alone or in combination with other well-known methods of treatment.
    Type: Application
    Filed: April 5, 2007
    Publication date: November 8, 2007
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Jayesh Mehta, Seema Singhal, Charles Davidson, Nirat Beohar, Robert Bonow