Patents by Inventor Carl Cohen
Carl Cohen 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: 11597877Abstract: Disclosed herein is a material, comprising a first metal halide that is operative to function as a scintillator; where the first metal halide excludes cesium iodide (ScI), strontium iodide (SrI2), cesium bromide (CsBr), thallium doped cesium iodide (CsI:Tl), europium doped strontium iodide (SrI2:Eu), europium doped barium iodide (BaI2;EU), cerium doped strontium iodide (SrI2:Ce), cerium doped barium iodide (BaI2:Ce), cerium doped lanthanum bromide (LaBr3:Ce), and cerium doped lutetium iodide (LuI3:Ce); and a surface layer comprising a second metal halide that is disposed on a surface of the first metal halide; where the second metal halide has a lower water solubility than the first metal halide.Type: GrantFiled: July 19, 2021Date of Patent: March 7, 2023Assignee: Siemens Medical Solutions USA, Inc.Inventors: Alexander Andrew Carey, Peter Carl Cohen, Mark S. Andreaco
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Patent number: 11555147Abstract: The present disclosure discloses, in one arrangement, a scintillator material made of a metal halide with one or more additional group-13 elements. An example of such a compound is Ce:LaBr3 with thallium (Tl) added, either as a codopant or in a stoichiometric admixture and/or solid solution between LaBr3 and TlBr. In another arrangement, the above single crystalline iodide scintillator material can be made by first synthesizing a compound of the above composition and then forming a single crystal from the synthesized compound by, for example, the Vertical Gradient Freeze method. Applications of the scintillator materials include radiation detectors and their use in medical and security imaging.Type: GrantFiled: March 30, 2018Date of Patent: January 17, 2023Assignee: Siemens Medical Solutions USA, Inc.Inventors: Peter Carl Cohen, Alexander Andrew Carey, Mark S. Andreaco, Matthias J. Schmand
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Publication number: 20210340442Abstract: Disclosed herein is a material, comprising a first metal halide that is operative to function as a scintillator; where the first metal halide excludes cesium iodide, strontium iodide, and cesium bromide; and a surface layer comprising a second metal halide that is disposed on a surface of the first metal halide; where the second metal halide has a lower water solubility than the first metal halide.Type: ApplicationFiled: July 19, 2021Publication date: November 4, 2021Inventors: Alexander Andrew Carey, Peter Carl Cohen, Mark S. Andreaco
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Patent number: 11107600Abstract: The present disclosure discloses rare earth metal halide scintillators compositions with reduced hygroscopicity. Compositions in specific implementations include three group of elements: Lanthanides, (La, Ce, Lu, Gd or V), elements in group 17 of the periodic table of elements (CI, Br and I) and elements of group 13 (B, AI, Ga, In, TI), and any combination of these elements. Examples of methods for making the compositions are also disclosed.Type: GrantFiled: October 8, 2012Date of Patent: August 31, 2021Assignee: Siemens Medical Solutions USA, Inc.Inventors: Peter Carl Cohen, A. Andrew Carey, Mark S. Andreaco, Matthias J. Schmand
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Patent number: 11098248Abstract: Disclosed herein is a material, comprising a first metal halide that is operative to function as a scintillator; where the first metal halide excludes cesium iodide, strontium iodide, and cesium bromide; and a surface layer comprising a second metal halide that is disposed on a surface of the first metal halide; where the second metal halide has a lower water solubility than the first metal halide.Type: GrantFiled: August 20, 2018Date of Patent: August 24, 2021Assignee: Siemens Medical Solutions USA, Inc.Inventors: Alexander Andrew Carey, Peter Carl Cohen, Mark S. Andreaco
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Patent number: 10996347Abstract: Example embodiments of a radiation detection system including a detector is described. The detector can include a scintillator, a sensor, and a light source. The radiation detection system can further include a controller programmed to control the light source to expose the scintillator to a light to saturate traps in the scintillator. In some embodiments, the detector can further include a second light source, and the controller is programmed to control the second light source to expose the scintillator to a second light to detrap afterglow traps in the scintillator.Type: GrantFiled: April 21, 2017Date of Patent: May 4, 2021Assignee: University of Tennessee Research FoundationInventors: Charles L. Melcher, Mohit Tyagi, Merry Koschan, Peter Carl Cohen, Matthias Schmand, Mark S. Andreaco, Lars Aldon Eriksson
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Patent number: 10961452Abstract: Disclosed herein is a method including manufacturing a powder having a composition of formula (1), M1aM2bM3cM4dO12??(1) where O represents oxygen, M1, M2, M3, and M4 represents a first, second, third, and fourth metal that are different from each other, where the sum of a+b+c+d is about 8, where “a” has a value of about 2 to about 3.5, “b” has a value of 0 to about 5, “c” has a value of 0 to about 5 “d” has a value of 0 to about 1, where “b” and “c”, “b” and “d”, or “c” and “d” cannot both be equal to zero simultaneously, where M1 is a rare earth element comprising gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M2 is aluminum or boron, M3 is gallium, and M4 is a dopant; and heating the powder to a temperature of 500 to 1700° C. in an oxygen containing atmosphere to manufacture a crystalline scintillator.Type: GrantFiled: February 4, 2019Date of Patent: March 30, 2021Assignee: Siemens Medical Solutions USA, Inc.Inventors: Peter Carl Cohen, Alexander Andrew Carey, Mark S. Andreaco
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Patent number: 10774440Abstract: A method of growing a rare-earth oxyorthosilicate crystal, and crystals grown using the method are disclosed. The method includes preparing a melt by melting a first substance including at least one first rare-earth element and providing an atmosphere that includes an inert gas and a gas including oxygen.Type: GrantFiled: January 18, 2019Date of Patent: September 15, 2020Assignee: Siemens Medical Solutions USA, Inc.Inventors: Mark S. Andreaco, Peter Carl Cohen, Alexander Andrew Carey
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Publication number: 20190169499Abstract: Disclosed herein is a method including manufacturing a powder having a composition of formula (1), M1aM2bM3cM4dO12??(1) where O represents oxygen, M1, M2, M3, and M4 represents a first, second, third, and fourth metal that are different from each other, where the sum of a+b+c+d is about 8, where “a” has a value of about 2 to about 3.5, “b” has a value of 0 to about 5, “c” has a value of 0 to about 5 “d” has a value of 0 to about 1, where “b” and “c”, “b” and “d”, or “c” and “d” cannot both be equal to zero simultaneously, where M1 is a rare earth element comprising gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M2 is aluminum or boron, M3 is gallium, and M4 is a dopant; and heating the powder to a temperature of 500 to 1700° C. in an oxygen containing atmosphere to manufacture a crystalline scintillator.Type: ApplicationFiled: February 4, 2019Publication date: June 6, 2019Inventors: Peter Carl Cohen, Alexander Andrew Carey, Mark S. Andreaco
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Publication number: 20190153614Abstract: A method of growing a rare-earth oxyorthosilicate crystal, and crystals grown using the method are disclosed. The method includes preparing a melt by melting a first substance including at least one first rare-earth element and providing an atmosphere that includes an inert gas and a gas including oxygen.Type: ApplicationFiled: January 18, 2019Publication date: May 23, 2019Inventors: Mark S. Andreaco, Peter Carl Cohen, Alexander Andrew Carey
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Patent number: 10227709Abstract: A method of growing a rare-earth oxyorthosilicate crystal, and crystals grown using the method are disclosed. The method includes preparing a melt by melting a first substance including at least one first rare-earth element and providing an atmosphere that includes an inert gas and a gas including oxygen.Type: GrantFiled: February 17, 2015Date of Patent: March 12, 2019Assignee: Siemens Medical Solutions USA, Inc.Inventors: Mark S. Andreaco, Peter Carl Cohen, Alexander Andrew Carey
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Patent number: 10222490Abstract: Apparatuses, computer-readable mediums, and methods are provided. In one embodiment, a positron emission tomography (“PET”) detector array is provided which includes a plurality of crystal elements arranged in a two-dimensional checkerboard configuration. In addition, there are empty spaces in the checkerboard configuration. In various embodiments, the empty spaces are filled with passive shielding, transmission source assemblies, biopsy instruments, surgical instruments, and/or electromagnetic sensors. In various embodiments, the crystal elements and the transmission source assemblies simultaneously perform emission/transmission acquisitions.Type: GrantFiled: September 15, 2014Date of Patent: March 5, 2019Assignee: Siemens Medical Solutions USA, Inc.Inventors: Christian J. Michel, Maurizio Conti, Ronald Grazioso, Peter Carl Cohen, A. Andrew Carey, Larry Byars
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Patent number: 10197685Abstract: Disclosed herein is a method including manufacturing a powder having a composition of formula (1), M1aM2bM3cM4dO12??(1) where O represents oxygen, M1, M2, M3, and M4 represents a first, second, third, and fourth metal that are different from each other, where the sum of a+b+c+d is about 8, where “a” has a value of about 2 to about 3.5, “b” has a value of 0 to about 5, “c” has a value of 0 to about 5 “d” has a value of 0 to about 1, where “b” and “c”, “b” and “d”, or “c” and “d” cannot both be equal to zero simultaneously, where M1 is a rare earth element comprising gadolinium, yttrium, lutetium, scandium, or a combination of thereof, M2 is aluminum or boron, M3 is gallium, and M4 is a codopant; and heating the powder to a temperature of 500 to 1700° C. in an oxygen containing atmosphere to manufacture a crystalline scintillator.Type: GrantFiled: December 1, 2015Date of Patent: February 5, 2019Assignee: Siemens Medical Solutions USA, Inc.Inventors: Peter Carl Cohen, Alexander Andrew Carey, Mark S. Andreaco
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Publication number: 20180355245Abstract: Disclosed herein is a material, comprising a first metal halide that is operative to function as a scintillator; where the first metal halide excludes cesium iodide, strontium iodide, and cesium bromide; and a surface layer comprising a second metal halide that is disposed on a surface of the first metal halide; where the second metal halide has a lower water solubility than the first metal halide.Type: ApplicationFiled: August 20, 2018Publication date: December 13, 2018Inventors: Alexander Andrew Carey, Peter Carl Cohen, Mark S. Andreaco
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Patent number: 10150914Abstract: Disclosed herein is a scintillator comprising a plurality of garnet compositions in a single block having the structural formula (1): M1aM2bM3cM4dO12??(1) where O represents oxygen, M1, M2, M3, and M4 represents a first, second, third and fourth metal that are different from each other, where the sum of a+b+c+d is about 8, where “a” has a value of 2 to 3.5, “b” has a value of 0 to 5, “c” has a value of 0 to 5 “d” has a value of 0 to 1, where “b” and “c”, “b” and “d” or “c” and “d” cannot both be equal to zero simultaneously, where M1 is rare earth element including gadolinium, yttrium, lutetium, or a combination thereof, M2 is aluminum or boron, M3 is gallium and M4 is a codopant; wherein two compositions having identical structural formulas are not adjacent to each other and wherein the single block is devoid of optical interfaces between different compositions.Type: GrantFiled: November 25, 2015Date of Patent: December 11, 2018Assignee: Siemens Medical Solutions USA, Inc.Inventors: Robert A. Mintzer, Peter Carl Cohen, Mark S. Andreaco, Matthias J. Schmand
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Patent number: 10087367Abstract: A halide material, such as scintillator crystals of LaBr3:Ce and SrI2:Eu, with a passivation surface layer is disclosed. The surface layer comprises one or more halides of lower water solubility than the scintillator crystal that the surface layer covers. A method for making such a material is also disclosed. In certain aspects of the disclosure, a passivation layer is formed on a surface of a halide material such as a scintillator crystal of LaBr3:Ce of SrI2:Eu by fluorinating the surface with a fluorinating agent, such as F2 for LaBr3:Ce and HF for SrI2:Eu.Type: GrantFiled: January 13, 2016Date of Patent: October 2, 2018Assignee: Siemens Medical Solutions USA, Inc.Inventors: Alexander Andrew Carey, Peter Carl Cohen, Mark S. Andreaco
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Publication number: 20180223186Abstract: The present disclosure discloses, in one arrangement, a scintillator material made of a metal halide with one or more additional group-13 elements. An example of such a compound is Ce:LaBr3 with thallium (Tl) added, either as a codopant or in a stoichiometric admixture and/or solid solution between LaBr3 and TlBr. In another arrangement, the above single crystalline iodide scintillator material can be made by first synthesizing a compound of the above composition and then forming a single crystal from the synthesized compound by, for example, the Vertical Gradient Freeze method. Applications of the scintillator materials include radiation detectors and their use in medical and security imaging.Type: ApplicationFiled: March 30, 2018Publication date: August 9, 2018Inventors: Peter Carl Cohen, Alexander Andrew Carey, Mark S. Andreaco, Matthias J. Schmand
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Patent number: 10000698Abstract: In one embodiment, a method includes forming a powder having a composition with the formula: AhBiCjO12, where h is 3±10%, i is 2±10%, j is 3±10%, A includes one or more rare earth elements, B includes aluminum and/or gallium, and C includes aluminum and/or gallium. The method additionally includes consolidating the powder to form an optically transparent ceramic, and applying at least one thermodynamic process condition during the consolidating to reduce oxygen and/or thermodynamically reversible defects in the ceramic. In another embodiment, a scintillator includes (Gd3-a-cYa)x(Ga5-bAlb)yO12Dc, where a is from about 0.05-2, b is from about 1-3, x is from about 2.8-3.2, y is from about 4.8-5.2, c is from about 0.003-0.3, and D is a dopant, and where the scintillator is an optically transparent ceramic scintillator having physical characteristics of being formed from a ceramic powder consolidated in oxidizing atmospheres.Type: GrantFiled: March 8, 2016Date of Patent: June 19, 2018Assignee: Lawrence Livermore National Security, LLCInventors: Nerine Cherepy, Stephen A. Payne, Zachary Seeley, Peter Carl Cohen, Mark S. Andreaco, Matthias J. Schmand
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Patent number: 9934633Abstract: A tactical security system can be used to secure a room. For example, such a security system may be contained in a housing sized for shipment to a location for placement in a room in order to secure the room. Various components may be included in the housing, such as a storage device configured to store data received from one or more audio or video recording devices; an access controller configured to interface with a badge reader associated with one or more access points to the room in order to selectively control access to the room; a switch configured to couple the one or more audio or video recording devices with the storage device and to couple the badge reader with the access controller; and/or a power supply configured to supply power to the devices in the housing.Type: GrantFiled: November 28, 2016Date of Patent: April 3, 2018Assignee: Palantir Technologies Inc.Inventors: Geoff Belknap, Carl Cohen, Christopher Deringer
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Publication number: 20170260448Abstract: In one embodiment, a method includes forming a powder having a composition with the formula: AhBiCjO12, where h is 3±l 0%, i is 2=10%, j is 3±10%, A includes one or more rare earth elements, B includes aluminum and/or gallium, and C includes aluminum and/or gallium. The method additionally includes consolidating the powder to form an optically transparent ceramic, and applying at least one thermodynamic process condition during the consolidating to reduce oxygen and/or thermodynamically reversible defects in the ceramic. In another embodiment, a scintillator includes (Gd3-a-cYa)x(Ga5-bAlb)yO12Dc, where a is from about 0.05-2, b is from about 1-3, x is from about 2.8-3.2, y is from about 4.8-5.2, c is from about 0.003-0.3, and D is a dopant, and where the scintillator is an optically transparent ceramic scintillator having physical characteristics of being formed from a ceramic powder consolidated in oxidizing atmospheres.Type: ApplicationFiled: March 8, 2016Publication date: September 14, 2017Inventors: Nerine Cherepy, Stephen A. Payne, Zachary Seeley, Peter Carl Cohen, Mark S. Andreaco, Matthias J. Schmand