Patents by Inventor John Harden

John Harden 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).

  • Publication number: 20210181522
    Abstract: An optical display device includes a coherent light source generating a coherent light beam in visible, ultraviolet, or infrared ranges. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of nanoparticles having an average diameter of ?about 450 nm are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast ?about 0.28. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is ?about 0.2 and in certain aspects may be ?about 0.03. A method of reducing speckle in an optical device having a coherent light source is also provided.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 17, 2021
    Inventors: Kai-Han CHANG, John HARDEN, Liang-Chy CHIEN
  • Patent number: 11016308
    Abstract: An optical display device includes a coherent light source generating a coherent light beam in visible, ultraviolet, or infrared ranges. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of nanoparticles having an average diameter of ?about 450 nm are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast ?about 0.28. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is ?about 0.2 and in certain aspects may be ?about 0.03. A method of reducing speckle in an optical device having a coherent light source is also provided.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: May 25, 2021
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, KENT STATE UNIVERSITY
    Inventors: Kai-Han Chang, John Harden, Liang-Chy Chien
  • Publication number: 20210132404
    Abstract: An optical device (e.g., display device) includes a coherent light source generating a coherent light beam in a visible, ultraviolet, or infrared range. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of microparticles having an average diameter of ?about 450 nm to ?about 20 micrometers (?m) are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast ?about 0.6. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is ?about 0.6. A method of reducing speckle in an optical device having a coherent light source is also provided.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, KENT STATE UNIVERSITY
    Inventors: John HARDEN, Liang-Chy CHIEN, Kai-Han CHANG
  • Patent number: 9987872
    Abstract: A security document includes a substrate, and an imaging thermal coating on at least a portion of the surface of the substrate for thermal printing on the security document. The imaging thermal coating is soluble in one or more solvents. A warning message is printed on the substrate in an ink which is substantially insoluble in the one or more solvents. An obscuring coating on the substrate covers the warning message such that the warning message is not apparent to an observer. The obscuring coating is soluble in the one or more solvents, such that the obscuring coating is removed from the substrate if the document is subjected to washing with the one or more solvents to remove printed images on the imaging thermal coating. By this arrangement, an attempt to alter the security document by washing the security document with the one or more solvents is made apparent.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: June 5, 2018
    Assignee: Taylor Communications, Inc.
    Inventors: Rajendra Mehta, John Harden, David Lienesch, Brian Berg
  • Publication number: 20140070525
    Abstract: A security document includes a substrate, and an imaging thermal coating on at least a portion of the surface of the substrate for thermal printing on the security document. The imaging thermal coating is soluble in one or more solvents. A warning message is printed on the substrate in an ink which is substantially insoluble in the one or more solvents. An obscuring coating on the substrate covers the warning message such that the warning message is not apparent to an observer. The obscuring coating is soluble in the one or more solvents, such that the obscuring coating is removed from the substrate if the document is subjected to washing with the one or more solvents to remove printed images on the imaging thermal coating. By this arrangement, an attempt to alter the security document by washing the security document with the one or more solvents is made apparent.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Applicant: THE STANDARD REGISTER COMPANY
    Inventors: Rajendra Mehta, John Harden, David Lienesch, Brian Berg
  • Publication number: 20130244876
    Abstract: The present invention relates to mixtures comprising, as active components ethephon and saflufenacil or cyclanilide and saflufenacil and to a method for defoliating, desiccating or ripening cultivated plants using such mixtures and to the use of ethephon and saflufenacil or of cyclanilide and saflufenacil for preparing such mixtures, and to compositions comprising these mixtures.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Inventors: Thorsten JABS, Alexandre FRATESCHI, Paulo Cesar QUEIROZ, Guy Mitsuyuki TSUMANUMA, Marco-Antonio TAVARES-RODRIGUES, Brady Scott ASHER, John HARDEN
  • Publication number: 20120127136
    Abstract: A display device includes a piezoelectric layer. First electrically conductive electrodes are disposed on both sides of the piezoelectric layer. A bistable liquid crystal layer is disposed adjacent the piezoelectric layer. Second electrically conductive electrodes are disposed on both sides of the liquid crystal layer. The liquid crystal layer can be addressed by electrically addressing the piezoelectric layer causing the piezoelectric layer to move into contact with the liquid crystal layer, changing the brightness of pixels of the liquid crystal layer.
    Type: Application
    Filed: August 18, 2011
    Publication date: May 24, 2012
    Applicant: KENT DISPLAYS INCORPORATED
    Inventors: Tod SCHNEIDER, Erica MONTBACH, J. William Doane, Antal JAKLI, John HARDEN
  • Publication number: 20080280764
    Abstract: The present invention relates to the use of 3-phenyluracils of formula (I) wherein the variables R1 to R7 are as defined in the description, optionally in combination with glyphosate, optionally in combination with harvest aids C for desiccating or defoliating glyphosate resistant crops.
    Type: Application
    Filed: August 1, 2006
    Publication date: November 13, 2008
    Inventors: John Harden, Dan E. Westberg, Glenn W. Oliver, John Bradley Guice, Rick Evans
  • Publication number: 20070151600
    Abstract: Novel nanoscale discotic liquid crystalline porphyrins, methods for their preparation, and device fabrication are disclosed. These compounds are capable of being used as high-efficiency photovoltaic materials, organic semiconducting materials, and organic light emitting materials.
    Type: Application
    Filed: January 4, 2006
    Publication date: July 5, 2007
    Inventors: Quan Li, Lanfang Li, Antal Jakli, John Harden
  • Publication number: 20070093389
    Abstract: The present invention relates to mixtures comprising a) a compound of the formula I in which X, m, Q and a are as defined in the description and b) one or more ethylene modulators (II) selected from the group consisting of: inhibitors of ethylene biosynthesis which inhibit the conversion of S-adenosyl-L-methionine into 1-aminocyclopropane-1-carboxylic acid (ACC), inhibitors of ethylene biosynthesis which block the conversion of ACC into ethylene, or inhibitors of ethylene action, and also to compositions comprising them and to their use for controlling harmful fungi.
    Type: Application
    Filed: November 5, 2004
    Publication date: April 26, 2007
    Inventors: Wilhelm Rademacher, John Harden, Dan Westberg, Joseph Zawierucha, Thomas Holt, Hendrik Ypema, Ted Bardinelli, Albert Everson, Edson Begliomini