Patents by Inventor Chi-Hao Chang

Chi-Hao Chang 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: 20200400980
    Abstract: In one example in accordance with the present disclosure, a screen privacy device is described. The screen privacy device includes first bands of a polymer-dispersed liquid crystal (PDLC) compound. These first bands have first light-scattering properties. The screen privacy device also includes second bands of the PDLC compound, the second bands having second light-scattering properties. In this example, the second light-scattering properties are different than the first light-scattering properties and the first bands and the second bands alternate along a dimension of the screen privacy device.
    Type: Application
    Filed: July 2, 2018
    Publication date: December 24, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Hsing-Hung Hsieh, Chi Hao Chang, Ann Alejandro Villegas
  • Patent number: 10851460
    Abstract: In example implementations, a vapor chamber is provided. The vapor chamber includes a metallic housing. A nickel coating is applied on inside walls of the metallic housing. A silica derived carbon nanotube (CNT) aerogel coating is applied on the nickel coating on the inside walls of the metallic housing. The silica derived CNT aerogel coating is sprayed onto the nickel coating, dried and cured.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: December 1, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuan-Ting Wu, Kevin Voss, Chi-Hao Chang
  • Publication number: 20200292246
    Abstract: Devices and methods of heat transfer are provided. In an example, a thermo-reversible hydrogel is provided in a first portion of a casing of a device. A wicking surface is provided in an inner surface of the casing between the first portion and the second portion.
    Type: Application
    Filed: December 8, 2017
    Publication date: September 17, 2020
    Inventors: Kuan-Ting Wu, Chi-Hao Chang, Chien-Ting Lin
  • Publication number: 20200285284
    Abstract: Computers are disclosed. An example computer includes a casing including a first casing portion and a second casing portion; a fastener; and a biasing element surrounding the fastener, the fastener to couple the first casing portion and the second casing portion and the biasing element to deter vibrations transmitted from the first casing portion to the fastener from affecting internal components of the computer.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 10, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Chung-Hua Ku, Chi-Hao Chang, Kuan-Ting Wu
  • Publication number: 20200283335
    Abstract: In one example, a method is described, which may include chemically etching a glass substrate to form a porous surface, coating an anti-glare layer on the porous surface, coating an anti-fingerprint layer on the anti-glare layer, and curing the anti-glare layer and the anti-fingerprint layer formed on the porous surface to form a protective panel.
    Type: Application
    Filed: November 16, 2017
    Publication date: September 10, 2020
    Inventors: KUAN-TING WU, KUO-CHIH HUANG, HANG YAN YUEN, CHI HAO CHANG
  • Publication number: 20200283648
    Abstract: In one example, an electronic device housing is described, which may include a substrate having a surface and at least one waterborne metallic paint coating formed on the surface of the substrate. The at least one waterborne metallic paint coating may include an insulating material encapsulated metal powder in combination with at least one of a surface modified synthetic mica and a surface modified glass platelet.
    Type: Application
    Filed: November 13, 2017
    Publication date: September 10, 2020
    Inventors: KUAN-TING WU, YA-TING YEH, CHI HAO CHANG
  • Publication number: 20200281084
    Abstract: Examples of hinge assemblies are described. In an example implementation, a hinge assembly includes hinge elements which are interconnected to move the hinge assembly between a folded position and an unfolded position. The hinge assembly further includes elastic members disposed between the hinge elements at a first side and a second side thereof. When the hinge assembly is moved from the unfolded position towards the folded position, elastic members at the first side are decompressed and elastic members at the second side are stretched. When the hinge assembly is moved from the folded position towards the unfolded position, elastic members at the first side are compressed and the elastic members at the second side are destretched.
    Type: Application
    Filed: October 6, 2017
    Publication date: September 3, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Wei-Chung Chen, Kuan-Ting Wu, Chi-Hao Chang
  • Publication number: 20200225712
    Abstract: In example implementations, a mobile device enclosure is provided. The mobile device enclosure includes a housing to enclose a computing device and a pull-out kickstand coupled to the housing via a movable hinge. An outer perimeter of the pull-out kickstand includes a surface enhancement to increase an amount of friction on the outer perimeter of the pull-out kickstand.
    Type: Application
    Filed: July 17, 2017
    Publication date: July 16, 2020
    Inventors: KUAN-TING WU, CHI HAO CHANG, CHUNG HUA KU
  • Publication number: 20200115565
    Abstract: The present subject matter relates to polymer coating of a metal alloy substrate. The metal alloy substrate has an electrolytically deposited nano-ion polymer layer thereon. The nano-ion polymer layer is of a polyacrylic material or an epoxy resin.
    Type: Application
    Filed: April 11, 2017
    Publication date: April 16, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Chi-Hao Chang, Kuo-Chih Huang, Kuan-Ting Wu
  • Patent number: 10537939
    Abstract: One example provides a method of manufacturing. The method comprises printing multiple layers comprising a metal material by an additive manufacturing technique, wherein each of the multiple layers comprises an array of cavities each having a cross-section of a polygon; and assembling at least two of the multiple layers to form an article having an array of three-dimensional hollow cells collectively having a honeycomb structure.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: January 21, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chi Hao Chang, Chien-Ting Lin, Kuan-Ting Wu
  • Patent number: 10533113
    Abstract: This disclosure provides a sol-gel hybrid coating composition, comprising a sol-gel precursor, a polymer and a solvent, wherein the sol-gel precursor comprises tetraethyl orthosilicate and the polymer comprises polyurethane and polyacrylic. This disclosure also provides a coating process, comprising: subjecting a light metal to micro-arc oxidation treatment to form a first protection layer on the light metal, and coating the sol-gel hybrid coating composition onto the first protection layer to form a second protection layer. This disclosure further provides composite coating layers, comprising: a first layer obtained by micro-arc oxidation treatment, and a second layer obtained by dip coating with the sol-gel hybrid coating composition.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: January 14, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuan-Ting Wu, Yu-Chuan Kang, Chi-Hao Chang
  • Patent number: 10401911
    Abstract: According to one example, a ceramic housing for an electronic device includes a surface and an elastomer, where the elastomer covers from ten percent to eighty-five percent of a total surface area of the surface.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: September 3, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuan-Ting Wu, Chi Hao Chang, Cheng-Feng Liao
  • Patent number: 10234905
    Abstract: Examples of a hinge for foldable components are described herein. In an example, the hinge can include a plurality of bracing elements, a bracing element from the plurality of bracing elements can be operably coupled to an adjacent bracing element from the plurality of bracing elements, to fold the plurality of bracing elements into an arcuate shape. Each bracing element can be supported and locked against the adjacent bracing element in the arcuate shape. The hinge can further include an end coupler at each longitudinal end of the hinge to couple the hinge to a flexible element.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: March 19, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Wei-Chung Chen, Wei-Kuang Chu, Chi-Hao Chang, Kuan-Ting Wu, Cheng-Feng Liao, Charlie Ku, Kun Chih Wang
  • Publication number: 20190054671
    Abstract: In one example, a metal-plastic composite structure for an electronic device is described, which includes a micro-arc oxidized metal substrate and at least one plastic film disposed on the micro-arc oxidized metal substrate using a superplastic forming process.
    Type: Application
    Filed: January 28, 2016
    Publication date: February 21, 2019
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Kuan-Ting WU, Chi-Hao CHANG, Hung-Ming CHEN
  • Publication number: 20190048476
    Abstract: In example implementations, a vapor chamber is provided. The vapor chamber includes a metallic housing. A nickel coating is applied on inside walls of the metallic housing. A silica derived carbon nanotube (CNT) aerogel coating is applied on the nickel coating on the inside walls of the metallic housing. The silica derived CNT aerogel coating is sprayed onto the nickel coating, dried and cured.
    Type: Application
    Filed: October 7, 2016
    Publication date: February 14, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Kuan-Ting WU, Kevin VOSS, Chi-Hao CHANG
  • Publication number: 20190033007
    Abstract: In one example, a heat pipe. The heat pipe includes a sealed, hollow, thermally conductive casing. A wick is disposed on interior walls of the casing. The wick includes an aerogel of carbon nanotubes and graphene. A working fluid is disposed in a cavity defined by the casing and the wick.
    Type: Application
    Filed: April 21, 2016
    Publication date: January 31, 2019
    Inventors: Kuan-Ting WU, Chi-Hao CHANG, Kuo-Chih HUANG, Hei Leng LIM, Kevin VOSS
  • Publication number: 20190016028
    Abstract: The present subject matter relates to fabrication of micro-arc oxidation (MAO) based insert-molded components. In an example implementation, a method of fabricating a MAO based insert-molded component comprises forming an insert-molded component and oxidizing the insert-molded component through MAO. The insert-molded component has a metal body molded with a plastic body. On oxidation of the insert-molded component through MAO an oxide layer is formed on the metal body.
    Type: Application
    Filed: April 4, 2016
    Publication date: January 17, 2019
    Inventors: CHI HAO CHANG, KUAN-TING WU, YU-LING LIN
  • Publication number: 20180298499
    Abstract: Various examples described herein provide for a substrate, or a method for preparing a substrate, including an aluminum layer and an anodized layer over a substrate. For instance, the substrate may comprise a substrate, a continuous aluminum layer formed over the substrate, and an anodized layer formed over the continuous aluminum layer.
    Type: Application
    Filed: April 30, 2015
    Publication date: October 18, 2018
    Inventors: CHI HAO CHANG, CHALAM KASHYAP, KUAN-TING WU
  • Publication number: 20180297173
    Abstract: One example provides a method. The method includes forming a substrate comprising a metal alloy comprising at least one of aluminium, magnesium, lithium, zinc, titanium, niobium, and copper. The method includes polishing a surface of the substrate using particles comprising chromium metal. The polished surface is electrically conductive.
    Type: Application
    Filed: April 7, 2015
    Publication date: October 18, 2018
    Inventors: KUAN-TING WU, CHI HAO CHANG, YU-CHUAN KANG
  • Publication number: 20180244949
    Abstract: This disclosure provides a sol-gel hybrid coating composition, comprising a sol-gel precursor, a polymer and a solvent, wherein the sol-gel precursor comprises tetraethyl orthosilicate and the polymer comprises polyurethane and polyacrylic. This disclosure also provides a coating process, comprising: subjecting a light metal to micro-arc oxidation treatment to form a first protection layer on the light metal, and coating the sol-gel hybrid coating composition onto the first protection layer to form a second protection layer. This disclosure further provides composite coating layers, comprising: a first layer obtained by micro-arc oxidation treatment, and a second layer obtained by dip coating with the sol-gel hybrid coating composition.
    Type: Application
    Filed: October 30, 2015
    Publication date: August 30, 2018
    Inventors: KUAN-TING WU, YU-CHUAN KANG, CHI-HAO CHANG