Patents by Inventor Ajay Nahata
Ajay Nahata 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: 20220357231Abstract: A visualization system for visualizing gas leak detection data including a processor in communication with at least one memory device is provided herein. The processor is configured to receive, from one or more sensors, gas measurement data for a plurality of measurement locations within a survey area; receive, from the at least one memory device, a geographic representation of the survey area; determine, based upon the gas measurement data, estimated gas source locations of the plurality of measurement locations; and apply a smoothing algorithm to the estimated gas source locations to create a multi-dimensional density plot.Type: ApplicationFiled: May 6, 2022Publication date: November 10, 2022Inventors: Ajay Nahata, J. Brian Leen
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Publication number: 20160018331Abstract: A biomolecular assay includes a substrate with a metallic layer on at least one surface thereof. The metallic film includes nanocavities. The nanocavities are configured to enhance signals that are representative of the presence or amount of one or more analytes in a sample or sample solution, and may be configured to enhance the signal by a factor of about two or more or by a factor of about three or more. Such signal enhancement may be achieved with nanocavities that are organized in an array, randomly positioned nanocavities, or nanocavities that are surrounded by increased surface area features, such as corrugation or patterning, or nanocavities that have quadrilateral or triangular shapes with tailored edge lengths, or with a plurality of nanoparticles. Methods for fabricating biomolecular substrates and assay techniques in which such bimolecular substrates are used are also disclosed.Type: ApplicationFiled: April 20, 2015Publication date: January 21, 2016Inventors: Steven M. Blair, Farhad Mahdavi, Yongdong Liu, James N. Herron, Ajay Nahata
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Patent number: 9012207Abstract: A biomolecular assay includes a substrate with a metallic layer on at least one surface thereof. The metallic film includes nanocavities. The nanocavities are configured to enhance signals that are representative of the presence or amount of one or more analytes in a sample or sample solution, and may be configured to enhance the signal by a factor of about two or more or by a factor of about three or more. Such signal enhancement may be achieved with nanocavities that are organized in an array, randomly positioned nanocavities, or nanocavities that are surrounded by increased surface area features, such as corrugation or patterning, or nanocavities that have quadrilateral or triangular shapes with tailored edge lengths, or with a plurality of nanoparticles. Methods for fabricating biomolecular substrates and assay techniques in which such biomolecular substrates are used are also disclosed.Type: GrantFiled: August 2, 2006Date of Patent: April 21, 2015Assignee: University of Utah Research FoundationInventors: Steven M. Blair, Farhad Mahdavi, Yongdong Liu, James N. Herron, Ajay Nahata
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Publication number: 20100256016Abstract: A biomolecular assay includes a substrate with a metallic layer on at least one surface thereof. The metallic film includes nanocavities. The nanocavities are configured to enhance signals that are representative of the presence or amount of one or more analytes in a sample or sample solution, and may be configured to enhance the signal by a factor of about two or more or by a factor of about three or more. Such signal enhancement may be achieved with nanocavities that are organized in an array, randomly positioned nanocavities, or nanocavities that are surrounded by increased surface area features, such as corrugation or patterning, or nanocavities that have quadrilateral or triangular shapes with tailored edge lengths, or with a plurality of nanoparticles. Methods for fabricating biomolecular substrates and assay techniques in which such biomolecular substrates are used are also disclosed.Type: ApplicationFiled: August 2, 2006Publication date: October 7, 2010Applicant: University of Utah Research FoundationInventors: Steven M. Blair, Farhad Mahdavi, Yongdong Liu, James N. Herron, Ajay Nahata
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Patent number: 5670603Abstract: This invention relates to polymers having non-linear optical properties which polymers include fluorene moieties having at least one electron accepting group and at least one electon donating group substituted to different phenyl rings of the fluorene moiety.Type: GrantFiled: March 8, 1993Date of Patent: September 23, 1997Assignee: AlliedSignal Inc.Inventors: Chengjiu Wu, Jianhui Shan, Ajay Nahata
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Patent number: 5354511Abstract: Compounds having non-linear optical activity of the general formula ##STR1## wherein D and A are electron donor and acceptor groups, respectively, R.sup.1 and R.sup.2 are aromatic bridging groups, X and Y are preferably groups capable of partaking in polymerization reactions are suitable for use in polymer-based light modulator devices.Type: GrantFiled: November 27, 1992Date of Patent: October 11, 1994Assignee: AlliedSignal Inc.Inventors: Chengjiu Wu, Jianhui Shan, Ajay Nahata
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Patent number: 5225244Abstract: Solid bodies having a reflective surface are provided with an anti-reflection coating of a terpolymer composition derived from (a) perfluoroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate.Type: GrantFiled: August 14, 1992Date of Patent: July 6, 1993Assignee: Allied-Signal Inc.Inventors: Shaul M. Aharoni, Michael J. McFarland, Ajay Nahata, James T. Yardley
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Patent number: 5198267Abstract: Solid bodies having a reflective surface are provided with an anti-reflection coating of a fluoropolymer blends of (1) a terpolymer composition derived from (a) perfluoroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl-containing acrylate or methacrylate; and (2) an amorphous fluoropolymer.Type: GrantFiled: June 1, 1992Date of Patent: March 30, 1993Assignee: Allied-Signal Inc.Inventors: Shaul M. Aharoni, Ajay Nahata, James T. Yardley
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Patent number: 5186865Abstract: Azo-type optically active compounds and polymers are provided based on compounds of the general structure[substituted aryl]--N.dbd.N--[substituted aryl]wherein aryl substituents are introduced which hinder or prohibit rotation around the single bonds of the --N.dbd.-- central moiety (as well as around certain other single bonds), to provide "planarized" structures having improved optically active properties, especially electro-optically active properties. These compounds and polymers find use in optically active waveguides.Type: GrantFiled: October 3, 1991Date of Patent: February 16, 1993Assignee: Allied-Signal Inc.Inventors: Chengjiu Wu, Ajay Nahata, Michael J. McFarland, Keith Horn, James T. Yardley
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Patent number: 5178955Abstract: Solid bodies having a reflective surface are provided with an anti-reflection coating of a terpolymer composition derived from (a) perfluoroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate.Type: GrantFiled: October 25, 1991Date of Patent: January 12, 1993Assignee: Allied-Signal Inc.Inventors: Shaul M. Aharoni, Michael J. McFarland, Ajay Nahata, James T. Yardley
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Patent number: 5139879Abstract: Solid bodies having a reflective surface are provided with an anti-reflection coating of a fluoropolymer blends of (1) a terpolymer composition derived from (a) perfluoroalkylakyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate; and (2) an amorphous fluoropolymer.Type: GrantFiled: November 21, 1991Date of Patent: August 18, 1992Assignee: Allied-Signal Inc.Inventors: Shaul M. Aharoni, Ajay Nahata, James T. Yardley
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Patent number: 5118579Abstract: Blends of amorphous fluoropolymers with copolymer compositions derived form (a) perfluroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) a hydroxyl-containing acrylate or methacrylate, in combination, can be cured to form coatings having properties typical of fluorine-containing polymers, with unusually low critical surface energy.Type: GrantFiled: September 20, 1991Date of Patent: June 2, 1992Assignee: Allied-Signal Inc.Inventors: Shaul M Aharoni, Ajay Nahata, James T. Yardley
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Patent number: 5061404Abstract: Azo-type optically active compounds and polymers are provided based on compounds of the general structure[substituted aryl]--N.dbd.N--[substituted aryl]wherein aryl substituents are introduced which hinder or prohibit rotation around the single bonds of the --N.dbd.N-- central moiety (as well as around certain other single bonds), to provide "planarized" structures having improved optically active properties, especially electro-optically active properties. These compounds and polymers find use in optically active waveguides.Type: GrantFiled: December 26, 1989Date of Patent: October 29, 1991Assignee: Allied-Signal Inc.Inventors: Chengjiu Wu, Ajay Nahata, Michael J. McFarland, Keith Horn, James T. Yardley