Patents by Inventor MAHDI MOHAJERI
MAHDI MOHAJERI 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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Publication number: 20240100499Abstract: Systems and methods for oxide-based doping of an evaporable getter are described herein. In certain embodiments, a method includes mixing a first getter material with a second getter material to create a mixed getter material. The method also includes mixing an oxide dopant with the mixed getter material to create a doped getter material. Further, the method includes sealing the doped getter material within a device. Moreover, the method includes applying heat to the doped getter material to cause the doped getter material to emit a doped gas for deposition on internal surfaces of the device.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Applicant: Honeywell International Inc.Inventors: John Downs, Mahdi Mohajeri, Dean Eivind Johnson
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Publication number: 20240093998Abstract: Systems and methods for a stabilized evaporable getter for increased handleability is provided. In certain embodiments, a method includes preparing a first getter material, a second getter material, and a metal material. Additionally, the method includes mixing the first getter material, the second getter material, and the metal material into a mixed getter material. Further, the method includes placing the mixed getter material into a getter holder. Also, the heat-treating the getter holder at a temperature below an activation temperature for an exothermic reaction of the mixed getter material but above a melting temperature of the metal material.Type: ApplicationFiled: September 15, 2022Publication date: March 21, 2024Applicant: Honeywell International Inc.Inventors: John Downs, Mahdi Mohajeri, Dean Eivind Johnson
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Patent number: 11921046Abstract: In some examples, a method of making a filter includes heating a metal substrate to precipitate a first phase on a surface of the metal substrate from a metal alloy, the metal substrate defining a plurality of apertures configured to allow a gas to pass through the apertures. The metal substrate is the metal alloy including a first metal and a second metal. The method further includes growing a plurality of carbon nanotubes (CNTs) on the surface of the first metal of the first phase, and the CNTs are configured to capture at least one particle.Type: GrantFiled: August 31, 2020Date of Patent: March 5, 2024Assignee: Honeywell International Inc.Inventors: Richard George Rateick, Jr., Christopher Evans, Bahram Jadidian, Mahdi Mohajeri, Mehrad Mehr
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Publication number: 20240072621Abstract: A method of making an electromagnetic coil for use in a high-temperature electromagnetic machine includes pre-coating magnet wire with a high-temperature insulation precursor to produce pre-coated magnet wire, winding, while applying in-situ a glass-ceramic slurry, the pre-coated magnet wire into a predetermined coil shape to produce a wet-wound green coil, and thermally processing the wet-wound green coil to produce a processed coil. In some instances, a second layer of a high-temperature insulation may be applied to the processed coil to produce a further insulated processed coil, and then thermally processing the further insulated processed coil to produce a further processed electromagnetic coil.Type: ApplicationFiled: August 30, 2022Publication date: February 29, 2024Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Mahdi Mohajeri, Eric Passman, Bahram Jadidian, James Piascik, Robert Dietrich, Andre Robinson, Jimmy Wiggins, Tom McHugh, Yongbae Jung
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Publication number: 20230261059Abstract: A high-temperature heterostructure conductor includes an electrically conductive heterostructure core, a second electrically conductive material, a ceramic layer and a dielectric layer. The electrically conductive heterostructure core includes a first electrically conductive material and an intermetallic layer that is formed on and surrounds the first electrically conductive material. The second electrically conductive material surrounds the intermetallic layer. The ceramic layer is formed or disposed on and surrounds the second electrically conductive material. The dielectric layer is disposed on and surrounding the ceramic layer.Type: ApplicationFiled: February 15, 2022Publication date: August 17, 2023Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Mahdi Mohajeri, Eric Passman, Bahram Jadidian
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Patent number: 11578707Abstract: A method for using a shape memory alloy (SMA) with a non-evaporable getter (NEG) employed in a vacuum device is disclosed. The method comprises coupling a NEG component to a SMA component to form an NEG/SMA assembly pair; heating the NEG/SMA assembly pair to activate the NEG component; and packaging the activated NEG component with the SMA component to form an NEG/SMA package having a gas tight seal. The method further comprises installing the NEG/SMA package in the vacuum device; and heating the installed NEG/SMA package such that the SMA component is actuated to expose the activated NEG component to a vacuum chamber in the vacuum device.Type: GrantFiled: April 28, 2022Date of Patent: February 14, 2023Assignee: Honeywell International Inc.Inventors: John Downs, Mahdi Mohajeri, Bahram Jadidian
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Publication number: 20220329133Abstract: A method for manufacturing an electromagnetic coil with an intentionally engineered heat flow path is provided. The method includes defining at least one preferential heat flow path for heat to flow for the electromagnetic coil. A coil cartridge in which to encase the electromagnetic coil is designed by selecting dimensions of different portions of the insulating coil cartridge that will result in the at least one preferential heat flow path. The electromagnetic coil is then encased in coil cartridge material to produce an encased electromagnetic coil.Type: ApplicationFiled: April 13, 2021Publication date: October 13, 2022Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Bahram Jadidian, Eric Passman, Mahdi Mohajeri
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Publication number: 20220310321Abstract: A method for manufacturing an electromagnetic coil with an intentionally engineered heat flow path is provided. The method includes defining at least one preferential heat flow path for heat to flow from the electromagnetic coil. A plurality of different materials are selected, each having different heat flow properties. A determination is made as to which portions of the electromagnetic coil should be coated with each of the different materials that will result in the at least one preferential heat flow path. The determined portions of the electromagnetic coil are then coated with each of the different materials to make a coated electromagnetic coil, and the coated electromagnetic coil is encased in a coil cartridge.Type: ApplicationFiled: March 26, 2021Publication date: September 29, 2022Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Eric Passman, Mahdi Mohajeri, Bahram Jadidian
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Patent number: 11415004Abstract: Disclosed is a superalloy gas turbine engine component including a glass coating. The glass coating is configured for resistance to hot corrosion caused by molten salts of sodium, magnesium, vanadium, and/or sulfur dioxide. The glass coating includes a mixture of two or more metal oxides, which are preferably selected from: barium oxide, silicon oxide, strontium oxide, aluminum oxide, magnesium oxide, calcium oxide, cobalt oxide, boron oxide, iron oxide, zirconium oxide, nickel oxide, and titanium oxide. The glass coating is in fully crystalline form and/or a mixture of crystalline and glass phases, and it has a coefficient of thermal expansion of from about 10 to about 18 ?m/m-° C. The glass coating has a thickness over the superalloy gas turbine engine component of about 0.5 mils to about 10 mils.Type: GrantFiled: December 9, 2020Date of Patent: August 16, 2022Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Mahdi Mohajeri, Bahram Jadidian
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Publication number: 20220178263Abstract: Disclosed is a superalloy gas turbine engine component including a glass coating. The glass coating is configured for resistance to hot corrosion caused by molten salts of sodium, magnesium, vanadium, and/or sulfur dioxide. The glass coating includes a mixture of two or more metal oxides, which are preferably selected from: barium oxide, silicon oxide, strontium oxide, aluminum oxide, magnesium oxide, calcium oxide, cobalt oxide, boron oxide, iron oxide, zirconium oxide, nickel oxide, and titanium oxide. The glass coating is in fully crystalline form and/or a mixture of crystalline and glass phases, and it has a coefficient of thermal expansion of from about 10 to about 18 ?m/m-° C. The glass coating has a thickness over the superalloy gas turbine engine component of about 0.5 mils to about 10 mils.Type: ApplicationFiled: December 9, 2020Publication date: June 9, 2022Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Mahdi Mohajeri, Bahram Jadidian
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Publication number: 20220065789Abstract: In some examples, a method of making a filter includes heating a metal substrate to precipitate a first phase on a surface of the metal substrate from a metal alloy, the metal substrate defining a plurality of apertures configured to allow a gas to pass through the apertures. The metal substrate is the metal alloy including a first metal and a second metal. The method further includes growing a plurality of carbon nanotubes (CNTs) on the surface of the first metal of the first phase, and the CNTs are configured to capture at least one particle.Type: ApplicationFiled: August 31, 2020Publication date: March 3, 2022Inventors: Richard George Rateick, JR., Christopher Evans, Bahram Jadidian, Mahdi Mohajeri, Mehrad Mehr
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Patent number: 9498768Abstract: The present invention is related to the synthesis of a nano-hybrid catalyst made of carbon nanotubes and metal ferrite materials for the removal of NOx compounds, which are emitted from stationary sources, through an ammonia selective catalytic reduction process. Weight ratios of carbon nanotube (x) to metal ferrite (y) is preferably about (x/y) 0.1 to 10. The present invention is also directed to the synthesis of a nano-hybrid catalyst to improve the efficiency of the conventional NOx reduction process at lower reaction temperatures. By use of the preferred nano-hybrid catalyst, it is possible to locate a selective catalytic reduction (SCR) unit capable of operating at lower temperatures, e.g., below 260° C., and from about 50° C. to about 250° C., after the desulfurizer and the particle removal equipment. With the exhaust gas cleaner, the lifetime of the catalyst can be increased. This nano-hybrid catalyst provides higher NOx removal efficiencies at low temperatures, typically from about 50° C.Type: GrantFiled: September 18, 2014Date of Patent: November 22, 2016Assignees: Research Institute of Petroleum Industry, Tarbiat Modaress UniversityInventors: Mahnaz Pourkhalil, Alimorad Rashidi, Abdolsammad Zarringhalam Moghaddam, Mahdi Mohajeri, Ali Mehri
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Patent number: 9446951Abstract: Highly-ordered nanostructure arrays and methods of preparation of the highly-ordered nanostructure arrays for adsorption of pollutants are disclosed. The highly-ordered nanostructure arrays can be vertically aligned metal oxide nanotube arrays having metal-deposited carbon nanotubes within the nanostructures. The metal-deposited carbon nanotubes within the nanostructures increase the adsorption of the pollutants, as discussed in greater detail below. The highly-ordered nanostructure arrays can be included in various filters, such as cigarette filters, to adsorb carcinogens and pollutants from the tobacco smoke.Type: GrantFiled: April 19, 2012Date of Patent: September 20, 2016Inventors: Alimorad Rashidi, Kheirollah Jafari Jozani, Mahnaz Pourkhalil, Mahdi Mohajeri, Hamzeh Ghorbani, Maryam Rashtchi
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Publication number: 20150144037Abstract: The present invention is related to the synthesis of a nano-hybrid catalyst made of carbon nanotubes and metal ferrite materials for the removal of NOx compounds, which are emitted from stationary sources, through an ammonia selective catalytic reduction process. Weight ratios of carbon nanotube (x) to metal ferrite (y) is preferably about (x/y) 0.1 to 10. The present invention is also directed to the synthesis of a nano-hybrid catalyst to improve the efficiency of the conventional NOx reduction process at lower reaction temperatures. By use of the preferred nano-hybrid catalyst, it is possible to locate a selective catalytic reduction (SCR) unit capable of operating at lower temperatures, e.g., below 260° C., and from about 50° C. to about 250° C., after the desulfurizer and the particle removal equipment. With the exhaust gas cleaner, the lifetime of the catalyst can be increased. This nano-hybrid catalyst provides higher NOx removal efficiencies at low temperatures, typically from about 50° C.Type: ApplicationFiled: September 18, 2014Publication date: May 28, 2015Applicants: Research Institute of Petroleum Industry (RIPI), Tarbiat Modaress UniversityInventors: Mahnaz Pourkhalil, Alimorad Rashidi, Abdolsammad Zarringhalam Moghaddam, Mahdi Mohajeri, Ali Mehri
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Publication number: 20120204890Abstract: Highly-ordered nanostructure arrays and methods of preparation of the highly-ordered nanostructure arrays for adsorption of pollutants are disclosed. The highly-ordered nanostructure arrays can be vertically aligned metal oxide nanotube arrays having metal-deposited carbon nanotubes within the nanostructures. The metal-deposited carbon nanotubes within the nanostructures increase the adsorption of the pollutants, as discussed in greater detail below. The highly-ordered nanostructure arrays can be included in various filters, such as cigarette filters, to adsorb carcinogens and pollutants from the tobacco smoke.Type: ApplicationFiled: April 19, 2012Publication date: August 16, 2012Inventors: ALIMORAD RASHIDI, KHEIROLLAH JAFARI JOZANI, MAHNAZ POURKHALIL, MAHDI MOHAJERI, HAMZEH GHORBANI, MARYAM RASHTCHI