Patents by Inventor Morteza Zandi
Morteza Zandi 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: 10658684Abstract: A glass-ceramic seal for ionic transport devices such as solid oxide fuel cell stacks or oxygen transport membrane applications. Preferred embodiments of the present invention comprise glass-ceramic sealant material based on a Barium-Aluminum-Silica system, which exhibits a high enough coefficient of thermal expansion to closely match the overall CTE of a SOFC cell/stack (preferably from about 11 to 12.8 ppm/° C.), good sintering behavior, and a very low residual glass phase (which contributes to the stability of the seal).Type: GrantFiled: June 7, 2016Date of Patent: May 19, 2020Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Signo T. Reis, Matthieu Jérôme Schwartz, Morteza Zandi, Yeshwanth Narendar
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Patent number: 9680157Abstract: A bonding layer used to join individually formed fuel cell units together to create a solid oxide fuel cell stack can include particles contained within a carrier material. The particles can have at least one material component in common with a porous electrode of a first type and a bimodal particle size distribution. In some embodiments, the particles of a first mode of the bimodal particle size distribution are small enough to fit at least partially into the porosity of the electrodes bonded together, while the particles of the second mode of the bimodal particle size distribution are larger than the porosity of the electrodes.Type: GrantFiled: September 30, 2014Date of Patent: June 13, 2017Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventor: Morteza Zandi
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Publication number: 20160365586Abstract: A glass-ceramic seal for ionic transport devices such as solid oxide fuel cell stacks or oxygen transport membrane applications. Preferred embodiments of the present invention comprise glass-ceramic sealant material based on a Barium-Aluminum-Silica system, which exhibits a high enough coefficient of thermal expansion to closely match the overall CTE of a SOFC cell/stack (preferably from about 11 to 12.8 ppm/° C.), good sintering behavior, and a very low residual glass phase (which contributes to the stability of the seal).Type: ApplicationFiled: June 7, 2016Publication date: December 15, 2016Inventors: Signo T. Reis, Matthieu Jérôme Schwartz, Morteza Zandi, Yeshwanth Narendar
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Patent number: 9175216Abstract: A ceramic scintillator body includes a polycrystalline ceramic scintillating material having a substantially cubic crystallographic structure. The polycrystalline ceramic scintillating material has a chemical composition represented by a general formula LU(2-x)GdxO3:Ac, where x is greater than zero and less than two, and where Ac is an activator.Type: GrantFiled: December 24, 2009Date of Patent: November 3, 2015Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Brian C. LaCourse, Anne B. Hardy, Hélène Laetitia Rétot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Publication number: 20150108404Abstract: A polycrystalline ceramic scintillator body includes a ceramic scintillating material comprising an oxide of gadolinium (Gd) and a second rare earth element (Re). The ceramic scintillating material has a composition, expressed in terms of molar percentage of oxide constituents, that includes greater than fifty-five percent (55%) Gd2O3 and a minority percentage of Re2O3. The ceramic scintillating material includes an activator.Type: ApplicationFiled: September 30, 2014Publication date: April 23, 2015Inventors: Brian C. LaCourse, Anne B. Hardy, Helene Laetitia Retot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Publication number: 20150093678Abstract: A bonding layer used to join individually formed fuel cell units together to create a solid oxide fuel cell stack can include particles contained within a carrier material. The particles can have at least one material component in common with a porous electrode of a first type and a bimodal particle size distribution. In some embodiments, the particles of a first mode of the bimodal particle size distribution are small enough to fit at least partially into the porosity of the electrodes bonded together, while the particles of the second mode of the bimodal particle size distribution are larger than the porosity of the electrodes.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Inventor: Morteza Zandi
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Patent number: 8877093Abstract: A polycrystalline ceramic scintillator body includes a ceramic scintillating material comprising an oxide of gadolinium (Gd) and a second rare earth element (Re). The ceramic scintillating material has a composition, expressed in terms of molar percentage of oxide constituents, that includes greater than fifty-five percent (55%) Gd2O3 and a minority percentage Of Re2O3. The ceramic scintillating material includes an activator.Type: GrantFiled: December 24, 2009Date of Patent: November 4, 2014Assignees: Saint-Gobain Ceramics & Plastics, Inc., Centre National de la Recherche ScientifiqueInventors: Brian C. LaCourse, Anne B. Hardy, Hélène Loetitia Rétot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Publication number: 20140295313Abstract: A glass-ceramic seal for ionic transport devices such as solid oxide fuel cell stacks or oxygen transport membrane applications. Preferred embodiments of the present invention comprise glass-ceramic sealant material based on a Barium-Aluminum-Silica system, which exhibits a high enough coefficient of thermal expansion to closely match the overall CTE of a SOFC cell/stack (preferably from about 11 to 12.8 ppm/° C.), good sintering behavior, and a very low residual glass phase (which contributes to the stability of the seal).Type: ApplicationFiled: March 28, 2014Publication date: October 2, 2014Applicant: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Signo Tadeu Reis, Matthieu Schwartz, Morteza Zandi, Yeshwanth Narendar
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Patent number: 8460578Abstract: A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)2O2S, wherein M is a rare earth element, and Ln is at least one element selected from the group consisting of Eu, Ce, Pr, Tb, Yb, Dy, Sm, and Ho, and 1×10?6<X<2×10?1. The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature Tht. The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature Thip, where 1100° C.<Thip<1500° C., to thereby form a densified body.Type: GrantFiled: April 6, 2009Date of Patent: June 11, 2013Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Brian C. LaCourse, Morteza Zandi
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Publication number: 20120085972Abstract: A ceramic scintillator body includes a polycrystalline ceramic scintillating material having a substantially cubic crystallographic structure. The polycrystalline ceramic scintillating material has a chemical composition represented by a general formula LU(2-x)GdxO3:Ac, where x is greater than zero and less than two, and where Ac is an activator.Type: ApplicationFiled: December 24, 2009Publication date: April 12, 2012Applicants: Centre National de la Recherche Scientifique, SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Brian C. LaCourse, Anne B. Hardy, Hélène Lortita Rétot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Publication number: 20120049118Abstract: A polycrystalline ceramic scintillator body includes a ceramic scintillating material comprising an oxide of gadolinium (Gd) and a second rare earth element (Re). The ceramic scintillating material has a composition, expressed in terms of molar percentage of oxide constituents, that includes greater than fifty-five percent (55%) Gd2O3 and a minority percentage Of Re2O3. The ceramic scintillating material includes an activator.Type: ApplicationFiled: December 24, 2009Publication date: March 1, 2012Applicants: Centre National de La Recherche Scientifique, Saint-Gobain Ceramics & Plastics Inc.Inventors: Brian C. LaCourse, Anne B. Hardy, Hélène Loetitia Rétot, Qiwei Chen, Xiafeng Peng, Bruno Viana, Morteza Zandí
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Publication number: 20090189121Abstract: A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)2O2S, wherein M is a rare earth element, and Ln is at least one element selected from the group consisting of Eu, Ce, Pr, Tb, Yb, Dy, Sm, and Ho, and 1×10?6<X<2×10?1. The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature Tht. The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature Thip, where 1100° C.<Thip<1500° C., to thereby form a densified body.Type: ApplicationFiled: April 6, 2009Publication date: July 30, 2009Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Brian C. LaCourse, Morteza Zandi
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Patent number: 7531109Abstract: A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)2O2S, wherein M is a rare earth element, and Ln is at least one element selected from the group consisting of Eu, Ce, Pr, Tb, Yb, Dy, Sm, and Ho, and 1×10?6<X<2×10?1. The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature Tht. The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature Thip, where 1100° C.<Thip<1500° C., to thereby form a densified body.Type: GrantFiled: July 18, 2006Date of Patent: May 12, 2009Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Brian C. LaCourse, Morteza Zandi
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Patent number: 7369393Abstract: An electrostatic chuck for supporting a semiconductor wafer, including: a chuck body having a dielectric region and an insulating region, the insulating region having a higher electrical resistivity than the dielectric region, an electrode embedded in the chuck body, and a barrier layer provided between dielectric region and the insulating region.Type: GrantFiled: April 8, 2005Date of Patent: May 6, 2008Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Morteza Zandi, Ara Vartabedian, Brian LaCourse
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Publication number: 20070027025Abstract: A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)2O2S, wherein M is a rare earth element, and Ln is at least one element selected from the group consisting of Eu, Ce, Pr, Tb, Yb, Dy, Sm, and Ho, and 1×10?6<X<2×10?1. The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature Tht. The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature Thip, where 1100° C.<Thip<1500° C., to thereby form a densified body.Type: ApplicationFiled: July 18, 2006Publication date: February 1, 2007Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Brian LaCourse, Morteza Zandi
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Patent number: 6982125Abstract: An electrostatic chuck is provided which includes a ceramic body comprising aluminum nitride (AlN), and at least one electrode in the ceramic body. According to a particular feature of this embodiment, the aluminum nitride has a resistivity ratio ?10V/?500V less than about 5. In this regard, ?10V represents the resistivity of the electrostatic chuck at 10 applied volts while ?500V represents the resistivity of the AlN material at 500 applied volts.Type: GrantFiled: December 23, 2002Date of Patent: January 3, 2006Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Brian C. LaCourse, Morteza Zandi, Ara Vartabedian
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Publication number: 20050231887Abstract: An electrostatic chuck for supporting a semiconductor wafer, including: a chuck body having a dielectric region and an insulating region, the insulating region having a higher electrical resistivity than the dielectric region, an electrode embedded in the chuck body, and a barrier layer provided between dielectric region and the insulating region.Type: ApplicationFiled: April 8, 2005Publication date: October 20, 2005Applicant: SAINT-GOBAIN CERAMICS & PLASTIC, INC.Inventors: Morteza Zandi, Ara Vartabedian, Brian LaCourse
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Publication number: 20040121192Abstract: An electrostatic chuck is provided which includes a ceramic body comprising aluminum nitride (AlN), and at least one electrode in the ceramic body. According to a particular feature of this embodiment, the aluminum nitride has a resistivity ratio &rgr;10V/&rgr;500V less than about 5. In this regard, &rgr;10V represents the resistivity of the electrostatic chuck at 10 applied volts while &rgr;500V represents the resistivity of the AlN material at 500 applied volts.Type: ApplicationFiled: December 23, 2002Publication date: June 24, 2004Inventors: Brian C. LaCourse, Morteza Zandi, Ara Vartabedian
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Patent number: 6744618Abstract: An electrostatic chuck having an essentially flat film electrode which is essentially parallel to the chucking surface of the electrostatic chuck is fabricated by depositing a film electrode, preferably by screen printing, onto a surface of a sintered ceramic substrate. A green ceramic layer is formed or molded onto the film electrode and the resulting structure is sintered, thereby producing the electrostatic chuck.Type: GrantFiled: December 5, 2000Date of Patent: June 1, 2004Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Ramesh Divakar, Morteza Zandi
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Patent number: 6603650Abstract: An electrostatic chuck, or susceptor, includes an electrode and/or heating element embedded in a ceramic body, and has an electrical contact extending from the electrode. The electrode or heating element can be fabricated, for example, from molybdenum and the chuck body from aluminum nitride. The electrical contact includes a first metal and a second metal in a composition ratio wherein essentially all of the second metal is dissolved in the first metal, thereby essentially preventing formation of intermetallic species of the first and second metals. One example of an electrical contact includes about 99.8 weight percent molybdenum and about 0.2 weight percent nickel. Alternatively, the electrode can be fabricated from a first metal and a second metal in a composition ratio wherein essentially all of the second metal is dissolved in the first metal, thereby essentially preventing formation of intermetallic species of the first and second metals.Type: GrantFiled: December 9, 1999Date of Patent: August 5, 2003Assignee: Saint-Gobain Ceramics and Plastics, Inc.Inventors: Ramesh Divakar, Morteza Zandi