Patents by Inventor Christopher J. Ro

Christopher J. Ro 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).

  • Method and system for fabricating dual curvature micro-truss structures
    Patent number: 10882220
    Abstract: A method and/or system for forming a micro-truss structure in an essentially arbitrary shape. A mold that has a transparent portion, and having an interior volume in the desired shape, is filled with photomonomer resin. The material for the transparent portion of the mold is selected to be a material that is index-matched to the photomonomer resin. The filled mold, placed into a bath of transparent fluid index-matched to the transparent portion of the mold, and illuminated, from outside the fluid, through a photomask, with collimated light. The collimated light travels through the photomask forming beams of light that enter the transparent fluid, propagate into the mold, and form a micro-truss structure in the shape of the interior volume of the mold. The micro-truss structure may then be removed from the mold, or part or all of the mold may be left adhered to the micro-truss structure, forming covering face sheets.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: January 5, 2021
    Assignee: HRL Laboratories, LLC
    Inventors: Jie Ensberg, Christopher J. Ro, Sophia S. Yang, Zak C. Eckel, Eric C. Clough
  • Method and system for fabricating dual curvature micro-truss structures
    Patent number: 10239237
    Abstract: A method and/or system for forming a micro-truss structure in an essentially arbitrary shape. A mold that has a transparent portion, and having an interior volume in the desired shape, is filled with photomonomer resin. The material for the transparent portion of the mold is selected to be a material that is index-matched to the photomonomer resin. The filled mold, placed into a bath of transparent fluid index-matched to the transparent portion of the mold, and illuminated, from outside the fluid, through a photomask, with collimated light. The collimated light travels through the photomask forming beams of light that enter the transparent fluid, propagate into the mold, and form a micro-truss structure in the shape of the interior volume of the mold. The micro-truss structure may then be removed from the mold, or part or all of the mold may be left adhered to the micro-truss structure, forming covering face sheets.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: March 26, 2019
    Assignee: HRL Laboratories, LLC
    Inventors: Jie Ensberg, Christopher J. Ro, Sophia S. Yang, Zak C. Eckel, Eric C. Clough
  • Internal combustion engine and method for coating internal combustion engine components
    Patent number: 10190533
    Abstract: An internal combustion engine includes a component configured to be subjected to combustion gasses, the component includes a substrate presenting a surface and a coating applied to the surface of the substrate. The coating includes an insulating layer applied to the surface having a plurality of microspheres and a sealing layer bonded to the insulating layer and seals against the insulating layer.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: January 29, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Russell P. Durrett, Paul M. Najt, Peter P. Andruskiewicz, IV, Tobias A. Schaedler, Gary P. Hill, John H. Martin, Christopher J. Ro
  • HEAT EXCHANGERS MADE FROM ADDITIVELY MANUFACTURED SACRIFICIAL TEMPLATES
    Publication number: 20180238638
    Abstract: A method of manufacturing a heat exchanger including a heat exchanger core of a first material, the method including additive manufacturing a sacrificial scaffold of a second material, the sacrificial scaffold corresponding in shape to that of the heat exchanger core, coating the sacrificial scaffold with a layer of the first material, and removing the sacrificial scaffold to leave behind the heat exchanger core with an integrated self-aligned passage.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 23, 2018
    Inventors: Christopher S. Roper, David Page, Randall C. Schubert, Christopher J. Ro, Arun Muley, Charles Kusuda
  • Heat exchangers made from additively manufactured sacrificial templates
    Patent number: 9976815
    Abstract: A method of manufacturing a heat exchanger including a heat exchanger core of a first material, the method including additive manufacturing a sacrificial scaffold of a second material, the sacrificial scaffold corresponding in shape to that of the heat exchanger core, coating the sacrificial scaffold with a layer of the first material, and removing the sacrificial scaffold to leave behind the heat exchanger core with an integrated self-aligned passage.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: May 22, 2018
    Assignees: HRL Laboratories, LLC, The Boeing Company
    Inventors: Christopher S. Roper, David Page, Randall C. Schubert, Christopher J. Ro, Arun Muley, Charles Kusuda
  • INTERNAL COMBUSTION ENGINE AND METHOD FOR COATING INTERNAL COMBUSTION ENGINE COMPONENTS
    Publication number: 20180038308
    Abstract: An internal combustion engine includes a component configured to be subjected to combustion gasses, the component includes a substrate presenting a surface and a coating applied to the surface of the substrate. The coating includes an insulating layer applied to the surface having a plurality of microspheres and a sealing layer bonded to the insulating layer and seals against the insulating layer.
    Type: Application
    Filed: August 8, 2016
    Publication date: February 8, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Russell P. Durrett, Paul M. Najt, Peter P. Andruskiewicz, IV, Tobias A. Schaedler, Gary P. Hill, John H. Martin, Christopher J. Ro