Patents by Inventor Mool C. Gupta

Mool C. Gupta 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: 11857998
    Abstract: A composition for a microtexture hydrophobic or superhydrophobic coating. The microtexture coating includes a coating layer disposed on a substrate with hydrophobic or superhydrophobic particles dispersed on top of or partially embedded in the coating layer to form an outer layer. The outer layer exhibits water repellant properties. Use of the microtexture coating permits large scale, durable hydrophobic or superhydrophobic coating applications. A method of applying a coating to a substrate creating a hydrophobic or superhydrophobic surface that includes applying a polymer material or an adhesive material to the substrate creating a polymer coating layer having a top surface; initially curing the applied coating layer for a specified amount of time allowing the coating layer to partially cure; and applying a solution, at a specified velocity, containing hydrophobic particles or superhydrophobic particles on top of the partially cured coating layer.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: January 2, 2024
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Alan T. Mulroney, Chao Qin
  • Patent number: 11519881
    Abstract: A method and system for ultrasonic testing of adhesion within a sample, which provides ultrasonic bursts of different frequencies to the sample and maintains a predetermined phase difference between echoes returned from the sample and representative reference signals of the bursts supplied to the sample until a spectrum of the phase differences versus frequency is obtained and from which properties of the adhesion at an interface reflecting the echoes are derivable.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: December 6, 2022
    Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
    Inventors: Harold A. Haldren, Daniel F. Perey, William T. Yost, K. Elliott Cramer, Mool C. Gupta
  • Publication number: 20220359226
    Abstract: A laser sintering deposition method for disposing lead selenide onto a substrate. The method includes: wet-milling a lead selenide ingot mixed with methanol into a colloidal slurry containing nanocrystals; separating the colloidal slurry into nanocrystal particles and the methanol; depositing the nanocrystal particles to a substrate; and emitting coherent infrared light onto the nanocrystal particles for fusing into a lead selenide crystalline film. Afterwards, the lead selenide film can be exposed to oxygen to form a lead selenite layer, and subsequently to iodine gas to produce a lead iodide layer onto the lead selenite layer.
    Type: Application
    Filed: April 29, 2022
    Publication date: November 10, 2022
    Applicants: United States of America, as represented by the Secretary of the Navy, University of Virginia
    Inventors: Joel T. Harrison, Mool C. Gupta
  • Patent number: 11467095
    Abstract: An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: October 11, 2022
    Assignee: LASER & PLASMA TECHNOLOGIES, LLC
    Inventors: Mool C. Gupta, Alexander C. Edrington, James I. Harp, Waverley D. Marsh, Guoqing Paul Shen
  • Publication number: 20220107276
    Abstract: An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.
    Type: Application
    Filed: September 20, 2021
    Publication date: April 7, 2022
    Inventors: Mool C. GUPTA, Alexander C. Edrington, James I. Harp, Waverley D. Marsh, Guoqing Paul Shen
  • Publication number: 20210302380
    Abstract: A method and system for ultrasonic testing of adhesion within a sample, which provides ultrasonic bursts of different frequencies to the sample and maintains a predetermined phase difference between echoes returned from the sample and representative reference signals of the bursts supplied to the sample until a spectrum of the phase differences versus frequency is obtained and from which properties of the adhesion at an interface reflecting the echoes are derivable.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 30, 2021
    Inventors: Harold A. Haldren, Daniel F. Perey, William T. Yost, K. Elliott Cramer, Mool C. Gupta
  • Patent number: 11131635
    Abstract: An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: September 28, 2021
    Assignee: LASER & PLASMA TECHNOLOGIES, LLC
    Inventors: Mool C. Gupta, Alexander C. Edrington, James I. Harp, Waverley D. Marsh, Guoqing Paul Shen
  • Publication number: 20210154700
    Abstract: A composition and method for a microtexture hydrophobic or superhydrophobic coating. The microtexture coating includes a coating layer disposed on a substrate with hydrophobic or superhydrophobic particles dispersed on top of or partially embedded in the coating layer to form an outer layer. The outer layer exhibits water repellant properties. Use of the microtexture coating permits large scale, durable hydrophobic or superhydrophobic coating applications. The microtexture coating is a useful for application on wind turbines, airplanes, solar panels, windows, or cooling systems.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 27, 2021
    Applicant: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Alan T. Mulroney, Chao Qin
  • Publication number: 20210088452
    Abstract: An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.
    Type: Application
    Filed: May 29, 2020
    Publication date: March 25, 2021
    Inventors: Mool C. GUPTA, Alexander C. Edrington, James I. Harp, Waverley D. Marsh, Guoqing Paul Shen
  • Patent number: 10670531
    Abstract: An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: June 2, 2020
    Assignee: LASER & PLASMA TECHNOLOGIES, LLC
    Inventors: Mool C. Gupta, Alexander C. Edrington, James I. Harp, Waverley D. Marsh, Guoqing Paul Shen
  • Patent number: 10131086
    Abstract: A method for the replication of a textured surface of a master is disclosed, in which the textured surface of the master is comprised of micron-scale cones having nano- or micro-scale surface features. Alternatively, the master may be comprised of micron-scale structures, nano-scale structures, and micron scale structures having nano-scale surface features. Replication can be achieved through a molding or embossing technique. Using these technique, the textured surface of the master is faithfully replicated onto the surface of the replica. A number of representative materials and additional processing steps are also disclosed. The replicated texture exhibits many useful properties, including enhanced hydrophobicity and reduced light reflection properties, making the disclosed method a simple and attractive alternative to existing texturing techniques.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: November 20, 2018
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Barada K. Nayak, Paul O. Caffrey
  • Publication number: 20170336328
    Abstract: An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.
    Type: Application
    Filed: January 4, 2017
    Publication date: November 23, 2017
    Inventors: Mool C. GUPTA, Alexander C. Edrington, James I. Harp, Waverley D. Marsh, Guoqing Paul Shen
  • Patent number: 8846551
    Abstract: The surface of a material is textured and by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. Texturing and crystallization can be carried out as a single step process. The crystallization of the material provides for higher electric conductivity and changes in optical and electronic properties of the material. The method may be performed in vacuum or a gaseous environment. The gaseous environment may aid in texturing and/or modifying physical and chemical properties of the surfaces. This method may be used on various material surfaces, such as semiconductors, metals and their alloys, ceramics, polymers, glasses, composites, as well as crystalline, nanocrystalline, polycrystalline, microcrystalline, and amorphous phases.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: September 30, 2014
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Barada K. Nayak
  • Publication number: 20140273535
    Abstract: The surface of a material is textured and crystallized in a single step by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. The crystallization of the material provides for higher electric conductivity and changes in optical properties of the material. The method may be performed in a gaseous environment, so that laser assisted chemical etching will aid in the texturing of the surface. This method may be used on various material surfaces, such as semiconductors, metals, ceramics, polymers, and glasses.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION
    Inventors: Mool C. Gupta, Barada K. Nayak
  • Patent number: 8753990
    Abstract: The surface of a material is textured and crystallized in a single step by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. The crystallization of the material provides for higher electric conductivity and changes in optical properties of the material. The method may be performed in a gaseous environment, so that laser assisted chemical etching will aid in the texturing of the surface. This method may be used on various material surfaces, such as semiconductors, metals, ceramics, polymers, and glasses.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: June 17, 2014
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Barada K. Nayak
  • Publication number: 20130189485
    Abstract: A method for the replication of a textured surface of a master is disclosed, in which the textured surface of the master is comprised of micron-scale cones having nano- or micro-scale surface features. Alternatively, the master may be comprised of micron-scale structures, nano-scale structures, and micron scale structures having nano-scale surface features. Replication can be achieved through a molding or embossing technique. Using these technique, the textured surface of the master is faithfully replicated onto the surface of the replica. A number of representative materials and additional processing steps are also disclosed. The replicated texture exhibits many useful properties, including enhanced hydrophobicity and reduced light reflection properties, making the disclosed method a simple and attractive alternative to existing texturing techniques.
    Type: Application
    Filed: June 28, 2012
    Publication date: July 25, 2013
    Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION
    Inventors: Mool C. Gupta, Barada K. Nayak, Paul O. Caffrey
  • Patent number: 8424200
    Abstract: An electromagnetic interference (EMI) shielding material includes a matrix of a dielectric or partially conducting polymer, such as foamed polystyrene, with carbon nanotubes or other nanostructures dispersed therein in sufficient concentration to make the material electrically conducting. The composite is formed by dispersing the nanotube material in a solvent in which the dielectric or partially conducting polymer is soluble and mixing the resulting suspension with the dielectric or partially conducting polymer. A foaming agent can be added to produce a lightweight foamed material. An organometallic compound can be added to enhance the conductivity further by decomposition into a metal phase.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: April 23, 2013
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Yonglai Yang, Kenneth L. Dudley, Roland W. Lawrence
  • Publication number: 20100219506
    Abstract: The surface of a material is textured and crystallized in a single step by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. The crystallization of the material provides for higher electric conductivity and changes in optical properties of the material. The method may be performed in a gaseous environment, so that laser assisted chemical etching will aid in the texturing of the surface. This method may be used on various material surfaces, such as semiconductors, metals, ceramics, polymers, and glasses.
    Type: Application
    Filed: December 21, 2006
    Publication date: September 2, 2010
    Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION
    Inventors: Mool C. Gupta, Barada K. Nayak
  • Publication number: 20100143744
    Abstract: The surface of a material is textured and by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. Texturing and crystallization can be carried out as a single step process. The crystallization of the material provides for higher electric conductivity and changes in optical and electronic properties of the material. The method may be performed in vacuum or a gaseous environment. The gaseous environment may aid in texturing and/or modifying physical and chemical properties of the surfaces. This method may be used on various material surfaces, such as semiconductors, metals and their alloys, ceramics, polymers, glasses, composites, as well as crystalline, nanocrystalline, polycrystalline, microcrystalline, and amorphous phases.
    Type: Application
    Filed: March 6, 2008
    Publication date: June 10, 2010
    Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION
    Inventors: Mool C. Gupta, Barada K. Nayak
  • Publication number: 20100000770
    Abstract: An electromagnetic interference (EMI) shielding material includes a matrix of a dielectric or partially conducting polymer, such as foamed polystyrene, with carbon nanotubes or other nanostructures dispersed therein in sufficient concentration to make the material electrically conducting. The composite is formed by dispersing the nanotube material in a solvent in which the dielectric or partially conducting polymer is soluble and mixing the resulting suspension with the dielectric or partially conducting polymer. A foaming agent can be added to produce a lightweight foamed material. An organometallic compound can be added to enhance the conductivity further by decomposition into a metal phase.
    Type: Application
    Filed: December 19, 2006
    Publication date: January 7, 2010
    Applicants: UNIVERSITY OF VIRGINIA PATENT FOUNDATION, THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
    Inventors: Mool C. Gupta, Yonglai Yang, Kenneth L. Dudley, Roland W. Lawrence