Patents Assigned to PlaSmart Inc.
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Patent number: 9960011Abstract: Provided are a plasma generation apparatus and a plasma generation method. The plasma generation apparatus includes a chamber including a dielectric window and a toroidal discharge space, a magnetic core disposed to surround a portion of the chamber, an induction coil disposed to wind the magnetic core, and a waveguide radiating a microwave through the dielectric window. Alternating current flowing in the induction coil forms a magnetic flux at the magnetic core, and the magnetic flux generates inductively-coupled plasma. A microwave propagating along the waveguide generates microwave plasma inside the chamber.Type: GrantFiled: January 21, 2014Date of Patent: May 1, 2018Assignee: Plasmart Inc.Inventors: Yong-Gwan Lee, Jae-Hyun Kim, Sang-Won Lee, Sae-Hoon Uhm, Young-Rok Kim, Kyu-Hun Lee, Jin-Joong Kim
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Patent number: 9736919Abstract: Provided are an RF power distribution device and an RF power distribution method. The RF power distribution device includes an impedance matching network for transferring power from an RF power source and a power distribution unit for distributing the output power from the impedance matching network to at least one electrode generating capacitively-coupled plasma. The power distribution unit includes a first reactive element connected in series to a first electrode, a variable capacitor having one end connected in parallel to the first reactive element and the first electrode and the other end grounded, and a second reactive element having one end connected to a first node where the one end of the variable capacitor and one end of the first reactance device are in contact with each other and the other end connected to a second node where a second electrode and an output terminal of the impedance matching network are connected.Type: GrantFiled: January 25, 2013Date of Patent: August 15, 2017Assignee: PLASMART, INC.Inventors: Jaehyun Kim, Sang Won Lee, Yong Gwan Lee
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Patent number: 9450559Abstract: An impedance matching device includes a first variable capacitor connected to an RF power source and including a first shaft moving linearly, a first linear motion unit axially coupled to the first shaft of the first variable capacitor to provide linear motion, a first insulating joint connecting the first shaft to a first driving shaft of the first linear motion unit, and a first displacement sensor adapted to measure a movement distance of the first driving shaft of the first linear motion unit.Type: GrantFiled: June 12, 2015Date of Patent: September 20, 2016Assignee: PLASMART INC.Inventor: Wonoh Lee
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Patent number: 9088266Abstract: An impedance matching device includes a first variable capacitor connected to an RF power source and including a first shaft moving linearly, a first linear motion unit axially coupled to the first shaft of the first variable capacitor to provide linear motion, a first insulating joint connecting the first shaft to a first driving shaft of the first linear motion unit, and a first displacement sensor adapted to measure a movement distance of the first driving shaft of the first linear motion unit.Type: GrantFiled: December 10, 2013Date of Patent: July 21, 2015Assignee: PLASMART INC.Inventor: Wonoh Lee
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Patent number: 8884520Abstract: Provided is an impedance matching apparatus for matching impedance to a plasma load. The impedance matching apparatus includes a first frequency impedance matching circuit unit that transfers an output of a first frequency RF power source unit, operating at a first frequency, to the plasma load; and a second frequency impedance matching circuit unit that transfers an output of a second frequency RF power source unit, operating at a second frequency higher than the first frequency, to the plasma load. The first frequency impedance matching circuit unit includes a T-type matching circuit, and the second frequency impedance matching circuit unit includes a standard L-type matching circuit or ?-type matching circuit.Type: GrantFiled: August 9, 2012Date of Patent: November 11, 2014Assignee: Plasmart Inc.Inventors: Jae Hyun Kim, Sang Won Lee, Yong Gwan Lee
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Publication number: 20140239588Abstract: A game for a plurality of players is disclosed. The game may have a plurality of polyhedrons arranged in a matrix. Each visible face of the polyhedrons has indicia thereon. The method may include the steps of randomingly aligning the polyhedrons into an equal number of rows and columns and rotating any polyhedron, by turns, so that a different face is showing, until a predetermined number of rows, a predetermined number of columns, a predetermined number of diagonals, or combinations thereof of a predetermined number of matching indicia are showing.Type: ApplicationFiled: February 22, 2013Publication date: August 28, 2014Applicant: PLASMART, INC.Inventor: PlaSmart, Inc.
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Publication number: 20140197596Abstract: The present invention relates to a multi-player magnetic element stacking game played on one or more shafts attached to a base and exploiting the phenomena of magnetic attraction or repulsion.Type: ApplicationFiled: January 10, 2014Publication date: July 17, 2014Applicant: PlaSmart, Inc.Inventor: Tracey McIlwaine
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Publication number: 20140130980Abstract: Provided are a plasma generation apparatus and a plasma generation method. The plasma generation apparatus includes a chamber including a dielectric window and a toroidal discharge space, a magnetic core disposed to surround a portion of the chamber, an induction coil disposed to wind the magnetic core, and a waveguide radiating a microwave through the dielectric window. Alternating current flowing in the induction coil forms a magnetic flux at the magnetic core, and the magnetic flux generates inductively-coupled plasma. A microwave propagating along the waveguide generates microwave plasma inside the chamber.Type: ApplicationFiled: January 21, 2014Publication date: May 15, 2014Applicant: Plasmart Inc.Inventors: Yong-Gwan Lee, Jae-Hyun Kim, Sang-Won Lee, Sae-Hoon Uhm, Young-Rok Kim, Kyu-Hun Lee, Jin-Joong Kim
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Publication number: 20140097912Abstract: An impedance matching device includes a first variable capacitor connected to an RF power source and including a first shaft moving linearly, a first linear motion unit axially coupled to the first shaft of the first variable capacitor to provide linear motion, a first insulating joint connecting the first shaft to a first driving shaft of the first linear motion unit, and a first displacement sensor adapted to measure a movement distance of the first driving shaft of the first linear motion unit.Type: ApplicationFiled: December 10, 2013Publication date: April 10, 2014Applicant: PLASMART INC.Inventor: Wonoh Lee
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Publication number: 20140021767Abstract: A seat member for use with a child's scooter vehicle for preventing the unintended flipping over of the scooter. The seat member having a body portion having opposing top and bottom surfaces and front and back surfaces. The seat member includes a generally planar seat surface on the top surface of the body portion and a projection member provided on the top back surface of the body portion. At least a portion of the projection member extends into the generally planar seat surface configured to prevent a user from leaning too far backwards on the seat member thus preventing the unintended flipping over of the scooter.Type: ApplicationFiled: September 24, 2013Publication date: January 23, 2014Applicant: PlaSmart, Inc.Inventor: Honghzi Bao
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Patent number: 8567803Abstract: A seat member for use with a child's scooter vehicle for preventing the unintended flipping over of the scooter. The seat member having a body portion having opposing top and bottom surfaces and front and back surfaces. The seat member includes a generally planar seat surface on the top surface of the body portion and a projection member provided on the top back surface of the body portion. At least a portion of the projection member extends into the generally planar seat surface configured to prevent a user from leaning too far backwards on the seat member thus preventing the unintended flipping over of the scooter.Type: GrantFiled: April 28, 2010Date of Patent: October 29, 2013Assignee: PlaSmart Inc.Inventor: Hongzhi Bao
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Patent number: 8466623Abstract: Provided are an impedance matching method and a matching system performing the same. The method includes: measuring an electrical characteristic of the power transmission line including the matching system and the load; extracting a control parameter for impedance matching from the electrical characteristic of the power transmission line; and controlling the matching system by using the control parameter. The extracting of the control parameter comprises utilizing an analytic coordinate system that quantitatively relates the electrical characteristic of the matching system to the electrical characteristic of the power transmission line.Type: GrantFiled: September 23, 2011Date of Patent: June 18, 2013Assignee: Plasmart, Inc.Inventors: Jae-Hyun Kim, Sang-Won Lee, Yong-Gwan Lee
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Publication number: 20130134877Abstract: Provided are an RF power distribution device and an RF power distribution method. The RF power distribution device includes an impedance matching network for transferring power from an RF power source and a power distribution unit for distributing the output power from the impedance matching network to at least one electrode generating capacitively-coupled plasma. The power distribution unit includes a first reactive element connected in series to a first electrode, a variable capacitor having one end connected in parallel to the first reactive element and the first electrode and the other end grounded, and a second reactive element having one end connected to a first node where the one end of the variable capacitor and one end of the first reactance device are in contact with each other and the other end connected to a second node where a second electrode and an output terminal of the impedance matching network are connected.Type: ApplicationFiled: January 25, 2013Publication date: May 30, 2013Applicant: PLASMART, INC.Inventor: PLASMART, INC.
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Patent number: D647336Type: GrantFiled: April 28, 2010Date of Patent: October 25, 2011Assignee: PlaSmart Inc.Inventor: Honghzi Bao