Patents by Inventor Oomman K. Varghese

Oomman K. Varghese 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).

  • Patent number: 10478800
    Abstract: Titania nanotube arrays are useful for phosphopeptide enrichment and separation. These highly ordered titania nanotube arrays are a low cost and highly effective alternative to the use of liquid chromatography mass spectrometry (LC-MS) methods using meoporous titania beads or particles. The highly ordered TiO2 nanotubes are grown on surfaces coated with Ti metal, or preferably on Ti wires, by methods that preferably include anodic oxidation.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: November 19, 2019
    Assignee: UNIVERSITY OF HOUSTON SYSTEM
    Inventors: Oomman K. Varghese, Aruna Wijeratne, Maggie Paulose, Ivy Ahiabu, Kenneth D. Greis, Dharshana Wijesundara, Wei-Kan Chu
  • Publication number: 20180015439
    Abstract: Titania nanotube arrays are useful for phosphopeptide enrichment and separation. These highly ordered titania nanotube arrays are a low cost and highly effective alternative to the use of liquid chromatography mass spectrometry (LC-MS) methods using meoporous titania beads or particles. The highly ordered Ti02 nanotubes are grown on surfaces coated with Ti metal, or preferably on Ti wires, by methods that preferably include anodic oxidation.
    Type: Application
    Filed: December 15, 2015
    Publication date: January 18, 2018
    Inventors: Oomman K. Varghese, Aruna Wijeratne, Maggie Paulose, Ivy Ahiabu, Kenneth D. Greis, Dharshana Wijesundara, Wei-Kan Chu
  • Patent number: 9799784
    Abstract: A photovoltaic device is disclosed including at least one Cadmium Sulfide Telluride (CdSxTe1?x) layer as are methods of forming such a photovoltaic device.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: October 24, 2017
    Assignee: First Solar, Inc.
    Inventors: Arnold Allenic, Zhigang Ban, Benyamin Buller, Markus Gloeckler, Benjamin Milliron, Xilin Peng, Rick C. Powell, Jigish Trivedi, Oomman K. Varghese, Jianjun Wang, Zhibo Zhao
  • Publication number: 20140261688
    Abstract: A photovoltaic device is disclosed including at least one Cadmium Sulfide Telluride (CdSxTe1-x) layer as are methods of forming such a photovoltaic device.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: FIRST SOLAR, INC
    Inventors: Arnold Allenic, Zhigang Ban, Benyamin Buller, Markus Gloeckler, Benjamin Milliron, Xilin Peng, Rick C. Powell, Jigish Trivedi, Oomman K. Varghese, Jianjun Wang, Zhibo Zhao
  • Publication number: 20100213046
    Abstract: Nitrogen-doped titania nanotubes exhibiting catalytic activity on exposure to any one or more of ultraviolet, visible, and/or infrared radiation, or combinations thereof are disclosed. The nanotube arrays may be co-doped with one or more nonmetals and may further include co-catalyst nanoparticles. Also, methods are disclosed for use of nitrogen-doped titania nanotubes in catalytic conversion of carbon dioxide alone or in admixture with hydrogen-containing gases such as water vapor and/or other reactants as may be present or desirable into products such as hydrocarbons and hydrocarbon-containing products, hydrogen and hydrogen-containing products, carbon monoxide and other carbon-containing products, or combinations thereof.
    Type: Application
    Filed: January 5, 2010
    Publication date: August 26, 2010
    Applicant: The Penn State Research Foundation
    Inventors: Craig A. Grimes, Oomman K. Varghese, Maggie Paulose
  • Publication number: 20100187172
    Abstract: Fabrication of self-aligned closed packed titania nanotube arrays in excess of 10 ?m in length and aspect ratio ?10,000 by potentiostatic anodization of titanium is disclosed. Conditions for achieving complete anodization and absolute tailorability of Ti foil samples resulting in a self-standing mechanically robust titania membrane in excess of 1000 ?m are also disclosed.
    Type: Application
    Filed: January 25, 2010
    Publication date: July 29, 2010
    Applicant: THE PENN STATE RESEARCH FOUNDATION
    Inventors: MAGGIE PAULOSE, KARTHIK SHANKAR, HARIPRIYA E. PRAKASAM, SORACHON YORIYA, OOMMAN K. VARGHESE, CRAIG A. GRIMES
  • Patent number: 7011737
    Abstract: An electrical resistive device, including: an array of titania nanotubes open at an outwardly-directed end formed by anodizing at least a portion of a titanium layer; a plurality of palladium (or other noble metal) clusters having been deposited atop the nanotube array; and the nanotube array mechanically supported by an integral support member. The array of titania nanotubes may include a dopant. An exposure of titania nanotube array to radiant energy emitted within a range of frequencies from visible to ultraviolet, in the presence of oxygen, removes a contaminant, if present. The titanium layer may be deposited atop the integral support; or the unique doped titanium layer can be produced, prior to the anodizing thereof, by depositing titanium along with dopant atop the integral support member by a co-deposition process. Also, supported: method(s) of producing the electrical resistive devices.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: March 14, 2006
    Assignee: The Penn State Research Foundation
    Inventors: Oomman K. Varghese, Gopal Mor, Maggie Paulose, Craig A. Grimes