Patents by Inventor Kristofer Maad
Kristofer Maad 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: 11719834Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: GrantFiled: June 7, 2021Date of Patent: August 8, 2023Assignee: BEAMOCULAR ABInventors: Kristofer Maad, Mauritz Andersson
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Publication number: 20210364656Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: ApplicationFiled: June 7, 2021Publication date: November 25, 2021Inventors: Kristofer Maad, Mauritz Andersson
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Patent number: 11029420Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: GrantFiled: March 26, 2020Date of Patent: June 8, 2021Inventors: Kristofer Maad, Mauritz Andersson
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Publication number: 20200284919Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: ApplicationFiled: March 26, 2020Publication date: September 10, 2020Inventors: Kristofer Maad, Mauritz Andersson
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Patent number: 10605929Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: GrantFiled: January 29, 2018Date of Patent: March 31, 2020Assignee: BEAMOCULAR ABInventors: Kristofer Maad, Mauritz Andersson
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Patent number: 10067241Abstract: A converter unit configured to convert incident photons into electrons comprises multiple blind holes forming respective ionization chambers. The converter unit is preferably arranged in a detector, such as X-ray detector or absolute radiation dose measurement detector, additionally comprising an electron amplification device and/or a readout device.Type: GrantFiled: November 28, 2017Date of Patent: September 4, 2018Assignee: C-RAD IMAGING ABInventors: Kristofer Maad, Gunnar Norberg
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Publication number: 20180231670Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: ApplicationFiled: January 29, 2018Publication date: August 16, 2018Inventors: Kristofer MAAD, Mauritz ANDERSSON
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Publication number: 20180088247Abstract: A converter unit configured to convert incident photons into electrons comprises multiple blind holes forming respective ionization chambers. The converter unit is preferably arranged in a detector, such as X-ray detector or absolute radiation dose measurement detector, additionally comprising an electron amplification device and/or a readout device.Type: ApplicationFiled: November 28, 2017Publication date: March 29, 2018Inventors: Kristofer MAAD, Gunnar NORBERG
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Patent number: 9880291Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: GrantFiled: March 2, 2015Date of Patent: January 30, 2018Assignee: BEAMOCULAR ABInventors: Kristofer Maad, Mauritz Andersson
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Patent number: 9851452Abstract: A converter unit configured to convert incident photons into electrons comprises multiple blind holes forming respective ionization chambers. In additional embodiments, the converter unit is arranged in a detector, such as an X-ray detector or absolute radiation dose measurement detector, additionally comprising an electron amplification device and/or a readout device.Type: GrantFiled: September 4, 2013Date of Patent: December 26, 2017Assignee: C-RAD IMAGING ABInventors: Kristofer Maad, Gunnar Norberg
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Publication number: 20160259065Abstract: The invention relates to a detecting unit for detecting ionizing radiation. The device comprises a converter unit for the amplification of ionizing radiation and a read-out unit, wherein the converter unit comprises a converter and a gas-electron multiplier, wherein said converter comprises a substrate with an ionizing radiation-receiving major surface and an electron-emitting major surface and a stack of accelerator plates in contact with the electron-emitting major side, wherein said stack comprises a plurality of perforated accelerator plates wherein the perforations of the perforated accelerator plates are aligned to form a matrix of blind holes.Type: ApplicationFiled: March 2, 2015Publication date: September 8, 2016Inventor: Kristofer MAAD
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Publication number: 20150060685Abstract: A converter unit configured to convert incident photons into electrons comprises multiple blind holes forming respective ionization chambers. In additional embodiments, the converter unit is arranged in a detector, such as an X-ray detector or absolute radiation dose measurement detector, additionally comprising an electron amplification device and/or a readout device.Type: ApplicationFiled: September 4, 2013Publication date: March 5, 2015Applicant: C-Rad Imaging ABInventors: Kristofer Maad, Gunnar Norberg
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Patent number: 8939920Abstract: The invention involves monitoring patient movement, in particular respiratory movement, of a patient (30) positioned on a couch (20) in connection with a radiation gantry (10). A 2D or 3D pattern (115) is projected onto the patient (30). At least a first portion of the pattern (115) is detected by a first detector (120) arranged on a first side of the gantry (10). At least a second portion of the pattern (115) is detected by a second detector (130) arranged on a second opposite side of the gantry (10). Pattern detection data is generated by the two detectors (120, 130) and is used for generating information representative of movement of the patient (30) on the couch (20). The information can be used, for instance, for prospective and/or retrospective gating.Type: GrantFiled: June 25, 2008Date of Patent: January 27, 2015Assignee: C-Rad Positioning ABInventor: Kristofer Maad
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Patent number: 8235530Abstract: A positioning system comprises a pattern projector (70) for projecting a 2D/3D pattern (45) onto an object surface. The 2D/3D pattern (45) is detected by a detector (80, 85), which generates a detection signal that is employed by a pattern analyzing circuit (110) for generating a surface representation of the object surface. A correction analyzing circuit (130) generates a correction signal representative of a discrepancy in position and/or posture of the surface representation relative a stored reference surface representation. The correction signal is employed to generate information (55, 56) that is projected by a light projector (70, 75) onto the object surface. The projected information (55, 56) is indicative of the determined discrepancy in object position and/or posture.Type: GrantFiled: December 7, 2009Date of Patent: August 7, 2012Assignee: C-Rad Positioning ABInventor: Kristofer Maad
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Publication number: 20110135190Abstract: A positioning system comprises a pattern projector (70) for projecting a 2D/3D pattern (45) onto an object surface. The 2D/3D pattern (45) is detected by a detector (80, 85), which generates a detection signal that is employed by a pattern analyzing circuit (110) for generating a surface representation of the object surface. A correction analyzing circuit (130) generates a correction signal representative of a discrepancy in position and/or posture of the surface representation relative a stored reference surface representation. The correction signal is employed to generate information (55, 56) that is projected by a light projector (70, 75) onto the object surface. The projected information (55, 56) is indicative of the determined discrepancy in object position and/or posture.Type: ApplicationFiled: December 7, 2009Publication date: June 9, 2011Applicant: C-Rad Positioning ABInventor: Kristofer MAAD
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Publication number: 20100198112Abstract: The invention involves monitoring patient movement, in particular respiratory movement, of a patient (30) positioned on a couch (20) in connection with a radiation gantry (10). A 2D or 3D pattern (115) is projected onto the patient (30). At least a first portion of the pattern (115) is detected by a first detector (120) arranged on a first side of the gantry (10). At least a second portion of the pattern (115) is detected by a second detector (130) arranged on a second opposite side of the gantry (10). Pattern detection data is generated by the two detectors (120, 130) and is used for generating information representative of movement of the patient (30) on the couch (20). The information can be used, for instance, for prospective and/or retrospective gating.Type: ApplicationFiled: June 25, 2008Publication date: August 5, 2010Applicant: C-Rad Positioning ABInventor: Kristofer Maad