Patents by Inventor William H. Park
William H. Park 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).
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Patent number: 11968774Abstract: According to some embodiments, an electrostatic particle accelerator may include an assembly having a motor and support plate; an acceleration tube; one or more stage assemblies each having an alternator coupled to a common drive shaft, a power supply coupled to one of the plurality of electrodes, and an opening to receive a portion of the acceleration tube; a pressure vessel configured to enclose the acceleration tube when the pressure vessel is fastened to the support plate; and a circulator configured to pump high pressure gas into the pressure vessel. The acceleration tube can include an ion source, an extraction assembly, and a plurality of tube segments each having a plurality of electrodes and one or more power connectors attached to one of the electrodes.Type: GrantFiled: April 19, 2019Date of Patent: April 23, 2024Assignee: Neutron Therapeutics LLCInventors: William H. Park, Jr., Theodore H. Smick, Geoffrey Ryding, Ronald Horner
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Publication number: 20230208130Abstract: An over-voltage protection system for an accelerator can include: a plurality of DC power supplies configured to provide a plurality of voltage levels up to a desired voltage level; and an acceleration tube electrically connected to the plurality of DC power supplies and configured to accelerate a charged particle. The acceleration tube can include a plurality of stages. Each stage can include a plurality of electrodes and a plurality of varistors configured to discharge energy in response to an overvoltage event. One electrode of the plurality of electrodes can be electrically coupled to a voltage level of the plurality of voltage levels. The plurality of electrodes and the plurality of varistors can be electrically coupled to each other and arranged in an alternating fashion.Type: ApplicationFiled: May 12, 2021Publication date: June 29, 2023Applicant: Neutron Therapeutics Inc.Inventors: Tyler R. Wills, William H. Park
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Patent number: 11589452Abstract: The present disclosures relates to an ion beam assembly where a relatively small deflection angle (approximately 15° from the center of the beam line) is used in conjunction with two beam dumps located on either side of the beam. In some embodiments, the combination of the two beam dumps and the magnet assembly can provide an ion beam filter. In some embodiments, the resulting system provides a smaller, safer and more reliable ion beam. In some embodiments, the ion beam can be a proton beam.Type: GrantFiled: May 5, 2017Date of Patent: February 21, 2023Assignee: Neutron Therapeutics, Inc.Inventors: Geoffrey Ryding, Takao Sakase, William H. Park, Theodore H. Smick
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Patent number: 11553584Abstract: Design and making methods of a neutrons generating target are described. In some embodiments, a surface of a target substrate can be modified to form one or more surface features. In some embodiments, a neutron source layer can be disposed on the surface of the target substrate. In some embodiments, the neutron source layer and the target substrate can be heated to an elevated temperature to form a bond between the two. In some embodiments, the surface modification of the target substrate can reduce blistering and material exfoliation in the target. The target can be used in boron neutron capture therapy.Type: GrantFiled: October 8, 2019Date of Patent: January 10, 2023Assignee: Neutron Therapeutics, Inc.Inventors: William H. Park, Jr., Mark Lambert, Joseph Gillespie, Noah Smick, Takao Sakase
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Publication number: 20210272716Abstract: Apparatuses and methods for producing neutrons for applications such as boron neutron capture therapy (BNCT) are described. An apparatus can include a rotary fixture with a coolant inlet and a coolant outlet, and a plurality of neutron-producing segments. Each neutron-producing segment of the plurality of neutron-producing segments is removably coupled to the rotary fixture, and includes a substrate having a coolant channel circuit defined therein and a solid neutron source layer disposed thereon. The coolant channel circuits are in fluid communication with the coolant inlet and the coolant outlet.Type: ApplicationFiled: May 3, 2021Publication date: September 2, 2021Applicant: Neutron Therapeutics Inc.Inventors: William H. Park, Jr., Steven P. Konish, Theodore H. Smick, Takao Sakase
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Patent number: 11024437Abstract: Apparatuses and methods for producing neutrons for applications such as boron neutron capture therapy (BNCT) are described. An apparatus can include a rotary fixture with a coolant inlet and a coolant outlet, and a plurality of neutron-producing segments. Each neutron-producing segment of the plurality of neutron-producing segments is removably coupled to the rotary fixture, and includes a substrate having a coolant channel circuit defined therein and a solid neutron source layer disposed thereon. The coolant channel circuits are in fluid communication with the coolant inlet and the coolant outlet.Type: GrantFiled: May 5, 2016Date of Patent: June 1, 2021Assignee: Neutron Therapeutics Inc.Inventors: William H. Park, Jr., Steven P. Konish, Theodore H. Smick, Takao Sakase
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Publication number: 20210120660Abstract: According to some embodiments, an electrostatic particle accelerator may include an assembly having a motor and support plate; an acceleration tube; one or more stage assemblies each having an alternator coupled to a common drive shaft, a power supply coupled to one of the plurality of electrodes, and an opening to receive a portion of the acceleration tube; a pressure vessel configured to enclose the acceleration tube when the pressure vessel is fastened to the support plate; and a circulator configured to pump high pressure gas into the pressure vessel. The acceleration tube can include an ion source, an extraction assembly, and a plurality of tube segments each having a plurality of electrodes and one or more power connectors attached to one of the electrodes.Type: ApplicationFiled: April 19, 2019Publication date: April 22, 2021Applicant: Neutron Therapeutics, Inc.Inventors: William H. Park, JR., Theodore H. Smick, Geoffrey Ryding, Ronald Horner
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Publication number: 20200196428Abstract: The present disclosures relates to an ion beam assembly where a relatively small deflection angle (approximately 15° from the center of the beam line) is used in conjunction with two beam dumps located on either side of the beam. In some embodiments, the combination of the two beam dumps and the magnet assembly can provide an ion beam filter. In some embodiments, the resulting system provides a smaller, safer and more reliable ion beam. In some embodiments, the ion beam can be a proton beam.Type: ApplicationFiled: May 5, 2017Publication date: June 18, 2020Applicant: Neutron Therapeutics, Inc.Inventors: Geoffrey RYDING, Takao SAKASE, William H. PARK, Theodore H. SMICK
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Publication number: 20200037430Abstract: Design and making methods of a neutrons generating target are described. In some embodiments, a surface of a target substrate can be modified to form one or more surface features. In some embodiments, a neutron source layer can be disposed on the surface of the target substrate. In some embodiments, the neutron source layer and the target substrate can be heated to an elevated temperature to form a bond between the two. In some embodiments, the surface modification of the target substrate can reduce blistering and material exfoliation in the target. The target can be used in boron neutron capture therapy.Type: ApplicationFiled: October 8, 2019Publication date: January 30, 2020Applicant: Neutron Therapeutics, Inc.Inventors: William H. Park, JR., Mark Lambert, Joseph Gillespie, Noah Smick, Takao Sakase
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Patent number: 10462893Abstract: Design and making methods of a neutrons generating target are described. In some embodiments, a surface of a target substrate can be modified to form one or more surface features. In some embodiments, a neutron source layer can be disposed on the surface of the target substrate. In some embodiments, the neutron source layer and the target substrate can be heated to an elevated temperature to form a bond between the two. In some embodiments, the surface modification of the target substrate can reduce blistering and material exfoliation in the target. The target can be used in boron neutron capture therapy.Type: GrantFiled: June 5, 2017Date of Patent: October 29, 2019Assignee: NEUTRON THERAPEUTICS, INC.Inventors: William H. Park, Jr., Mark Lambert, Joseph Gillespie, Noah Smick, Takao Sakase
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Publication number: 20180352643Abstract: Design and making methods of a neutrons generating target are described. In some embodiments, a surface of a target substrate can be modified to form one or more surface features. In some embodiments, a neutron source layer can be disposed on the surface of the target substrate. In some embodiments, the neutron source layer and the target substrate can be heated to an elevated temperature to form a bond between the two. In some embodiments, the surface modification of the target substrate can reduce blistering and material exfoliation in the target. The target can be used in boron neutron capture therapy.Type: ApplicationFiled: June 5, 2017Publication date: December 6, 2018Inventors: William H. Park, JR., Mark Lambert, Joseph Gillespie, Noah Smick, Takao Sakase
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Publication number: 20170062086Abstract: Apparatuses and methods for producing neutrons for applications such as boron neutron capture therapy (BNCT) are described. An apparatus can include a rotary fixture with a coolant inlet and a coolant outlet, and a plurality of neutron-producing segments. Each neutron-producing segment of the plurality of neutron-producing segments is removably coupled to the rotary fixture, and includes a substrate having a coolant channel circuit defined therein and a solid neutron source layer disposed thereon. The coolant channel circuits are in fluid communication with the coolant inlet and the coolant outlet.Type: ApplicationFiled: May 5, 2016Publication date: March 2, 2017Inventors: William H. PARK, JR., Steven P. KONISH, Theodore H. SMICK, Takao SAKASE
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Publication number: 20150262863Abstract: A compact electromagnetic system is disclosed that is capable of scanning an ion beam in two orthogonal directions (e.g., for semiconductor doping or hydrogen induced exfoliation). In particular, according to embodiments of the compact electromagnetic system, the steel yoke, pole pieces, and excitation coils for both the X and Y axis have been integrated into a common structure.Type: ApplicationFiled: March 13, 2015Publication date: September 17, 2015Inventors: William H. Park, Geoffrey Ryding
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Patent number: 8558486Abstract: A d.c. charged particle accelerator comprises accelerator electrodes separated by insulating spacers defining acceleration gaps between adjacent pairs of electrodes. Individually regulated gap voltages are applied across each adjacent pair of accelerator electrodes. In embodiments, the individually regulated gap voltages are generated by electrically isolated alternators mounted on a common rotor shaft driven by an electric motor. Alternating power outputs from the alternators provide inputs to individual regulated d.c. power supplies to generate the gap voltages. The power supplies are electrically isolated and have outputs connected in series across successive pairs of accelerator electrodes. The described embodiment enables an ion beam to be accelerated to high energies and high beam currents, with good accelerator stability.Type: GrantFiled: December 8, 2010Date of Patent: October 15, 2013Assignee: GTAT CorporationInventors: Theodore H. Smick, Geoffrey Ryding, William H. Park, Ronald Horner
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Patent number: 8426829Abstract: An ion implanter has an implant wheel with a plurality of wafer carriers distributed about a periphery of the wheel. Each wafer carrier has a heat sink for removing heat from a wafer on the carrier during the implant process by thermal contact between the wafer and the heat sink. The wafer carriers have wafer retaining fences formed as cylindrical rollers with axes in the respective wafer support planes of the wafer carriers. The cylindrical surfaces of the rollers provide wafer abutment surfaces which can move transversely to the wafer support surfaces so that no transverse loading is applied by the fences to wafer edges as the wafer is pushed against the heat sink by centrifugal force. The wafer support surfaces comprise layers of elastomeric material and the movable abutment surfaces of the fences allow even thermal coupling with the heat sink over the whole area of the wafer.Type: GrantFiled: September 30, 2010Date of Patent: April 23, 2013Assignee: GTAT CorporationInventors: William H Leavitt, Theodore H Smick, Joseph Daniel Gillespie, William H Park, Paul Eide, Drew Arnold, Geoffrey Ryding
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Patent number: 8324592Abstract: Multiple control electrodes are provided asymmetrically within the plasma chamber of an ion source at respective positions along the length of the plasma chamber. Biasing the control electrodes selectively can selectively enhance the ion extraction current at adjacent positions along the length of the extraction slit. A method of generating an ion beam is disclosed in which the strengths of the transverse electric fields at different locations along the length of the plasma chamber are controlled to modify the ion beam linear current density profile along the length of the slit. The method is used for controlling the uniformity of a ribbon beam.Type: GrantFiled: November 2, 2010Date of Patent: December 4, 2012Assignee: Twin Creeks Technologies, Inc.Inventors: Geoffrey Ryding, Drew Arnold, William H. Park, Ronald Horner
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Publication number: 20120146554Abstract: A d. c. charged particle accelerator comprises accelerator electrodes separated by insulating spacers defining acceleration gaps between adjacent pairs of electrodes. Individually regulated gap voltages are applied across each adjacent pair of accelerator electrodes. In embodiments, the individually regulated gap voltages are generated by electrically isolated alternators mounted on a common rotor shaft driven by an electric motor. Alternating power outputs from the alternators provide inputs to individual regulated d. c. power supplies to generate the gap voltages. The power supplies are electrically isolated and have outputs connected in series across successive pairs of accelerator electrodes. The described embodiment enables an ion beam to be accelerated to high energies and high beam currents, with good accelerator stability.Type: ApplicationFiled: December 8, 2010Publication date: June 14, 2012Applicant: TWIN CREEKS TECHNOLOGIES, INC.Inventors: Theodore H. Smick, Geoffrey Ryding, William H. Park, Ronald Horner
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Publication number: 20120104273Abstract: Multiple control electrodes are provided asymmetrically within the plasma chamber of an ion source at respective positions along the length of the plasma chamber. Biasing the control electrodes selectively can selectively enhance the ion extraction current at adjacent positions along the length of the extraction slit. A method of generating an ion beam is disclosed in which the strengths of the transverse electric fields at different locations along the length of the plasma chamber are controlled to modify the ion beam linear current density profile along the length of the slit. The method is used for controlling the uniformity of a ribbon beam.Type: ApplicationFiled: November 2, 2010Publication date: May 3, 2012Applicant: TWIN CREEKS TECHNOLOGIES, INC.Inventors: Geoffrey Ryding, Drew Arnold, William H. Park, Ronald Horner
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Patent number: 8089050Abstract: A ribbon-shaped ion beam is modified using multiple coil structures on a pair of opposed ferromagnetic bars. The coil structures comprise continuous windings which have predetermined variations along the length of the bar of turns per unit length. In an example, one coil structure may have uniform turns per unit length along the bar, so that energizing the coil structures forms a magnetic field component extending across the gap between the bars with a quadrupole intensity distribution. A second coil structure may have turns per unit length varying to produce a hexapole magnetic field intensity distribution. Further coil structures may be provided to produce octopole and decapole magnetic field distributions. The coil structures may be energized to produce magnetic fields parallel to the bars which vary along the length of the bars, to twist or flatten the ribbon-shaped beam.Type: GrantFiled: November 19, 2009Date of Patent: January 3, 2012Assignee: Twin Creeks Technologies, Inc.Inventors: Kenneth Harry Purser, William H. Park
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Patent number: 8058626Abstract: A ribbon-shaped ion beam having an elongate cross-section normal to a beam direction is modified by generating, at a predetermined position along the ribbon-shaped beam, a magnetic field extending in an x-direction along an x-axis. The x-direction magnetic field has a non-uniform intensity which is a desired function of x.Type: GrantFiled: February 10, 2010Date of Patent: November 15, 2011Assignee: Twin Creeks Technologies, Inc.Inventors: Kenneth Harry Purser, William H. Park