Patents by Inventor Byoung Woo Hwang

Byoung Woo Hwang 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: 9568650
    Abstract: A privacy securing film comprises a louver film consisting of transparent layers and opaque layers arranged alternately, wherein the opaque layer is made of light-absorbing beads having a mean diameter of 0.2 to 20 micrometers and binder bonding said beads each other and adjacent transparent layers, and being characterized in a micro-roughness formed at the interface between the transparent layer and the opaque layer due to the presence of said beads. The privacy securing film of the present invention has a simplified structure, excellent appearance with a simple manufacturing process as well as reduces the creation of a ghost image significantly, as compared with conventional ones.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 14, 2017
    Assignee: SEWHA P&C CO., LTD.
    Inventor: Byoung-Woo Hwang
  • Publication number: 20150338558
    Abstract: A privacy securing film comprises a louver film consisting of transparent layers and opaque layers arranged alternatively, wherein the opaque layer is made of light-absorbing beads having a mean diameter of 0.2 to 20 micrometers and binder bonding said beads each other and adjacent transparent layers, and being characterized in a micro-roughness formed at the interface between the transparent layer and the opaque layer due to the presence of said beads. The privacy securing film of the present invention has a simplified structure, excellent appearance with a simple manufacturing process as well as reduces the creation of a ghost image significantly, as compared with conventional ones.
    Type: Application
    Filed: January 8, 2015
    Publication date: November 26, 2015
    Applicant: SEWHA P&C CO., LTD.
    Inventor: Byoung-Woo Hwang
  • Publication number: 20140162009
    Abstract: The present disclosure generally relates to a shock absorption film for use with a mobile computing device. The shock absorption film includes, for example, a PET base layer; a TPU-based layer comprising a thermoplastic polyurethane (TPU) material; a release liner; a glue layer interposed between the base layer and the TPU layer; and a silicone-based adhesive layer interposed between the TPU layer and the release liner, the silicone-based adhesive layer contacting the TPU layer without an intervening layer between the silicone adhesive layer and the TPU layer.
    Type: Application
    Filed: May 22, 2013
    Publication date: June 12, 2014
    Applicant: SHE HWA P&C CO., LTD
    Inventor: Byoung-Woo HWANG
  • Publication number: 20110217513
    Abstract: The present invention relates to a privacy securing film, and more particularly, to a privacy securing film having a louver film, wherein the louver film is manufactured through a process including the steps of i) alternately laminating and thermo-compressing transparent film layers and opaque adhesive ink layers, and ii) cutting the thermo-compressed, laminated film perpendicularly to or at a certain angle with respect to the surface thereof such that the thickness of the louver film is in a range of 2 to 30 times the thickness of the transparent film, and a hard coat layer is provided on at least one outermost face of the privacy securing film. The privacy securing film of the present invention has a simplified structure, can be fabricated through a simple manufacturing process, can significantly reduce the creation of a ghost image, and has excellent radio-shielding effects, as compared with conventional ones.
    Type: Application
    Filed: May 17, 2011
    Publication date: September 8, 2011
    Applicant: SHEHWA P&C CO., LTD.
    Inventor: Byoung-Woo HWANG
  • Publication number: 20100000671
    Abstract: The present invention relates to a privacy securing film, and more particularly, to a privacy securing film having a louver film, wherein the louver film is manufactured through a process including the steps of i) alternately laminating and thermo-compressing transparent film layers and opaque adhesive ink layers, and ii) cutting the thermo-compressed, laminated film perpendicularly to or at a certain angle with respect to the surface thereof such that the thickness of the louver film is in a range of 2 to 30 times the thickness of the transparent film, and a hard coat layer is provided on at least one outermost face of the privacy securing film. The privacy securing film of the present invention has a simplified structure, can be fabricated through a simple manufacturing process, can significantly reduce the creation of a ghost image, and has excellent radio-shielding effects, as compared with conventional ones.
    Type: Application
    Filed: August 7, 2009
    Publication date: January 7, 2010
    Applicant: SHEHWA P&C CO. LTD.
    Inventor: Byoung-Woo HWANG
  • Publication number: 20080213553
    Abstract: The present invention relates to a privacy securing film, and more particularly, to a privacy securing film having a louver film, wherein the louver film is manufactured through a process including the steps of i) alternately laminating and thermo-compressing transparent film layers and opaque adhesive ink layers, and ii) cutting the thermo-compressed, laminated film perpendicularly to or at a certain angle with respect to the surface thereof such that the thickness of the louver film is in a range of 2 to 30 times the thickness of the transparent film, and a hard coat layer is provided on at least one outermost face of the privacy securing film. The privacy securing film of the present invention has a simplified structure, can be fabricated through a simple manufacturing process, can significantly reduce the creation of a ghost image, and has excellent radio-shielding effects, as compared with conventional ones.
    Type: Application
    Filed: February 28, 2005
    Publication date: September 4, 2008
    Applicant: Shehwa P & C Co., Ltd.,
    Inventor: Byoung-Woo Hwang
  • Patent number: 6994267
    Abstract: The temperature/humidity control system includes a humidifying device having a vibrator to convert water into vapor. The control system also includes, a storage member storing the vapor generated by the vibrator, and at least one mixing member to humidify hydrogen and air supplied to the fuel cell stack with the vapor stored in the storage member. The control system fuel cell includes a preheating device configured to preheat the hydrogen and air humidified by the mixing member, and at least one temperature sensor detecting temperatures of hydrogen and air having passed the preheating device and a temperature of coolant of the fuel cell stack. Finally, the control system includes at least one humidity sensor detecting humidities of hydrogen and air having passed the humidifying devices, and a fuel cell control unit controlling the humidifying device and the preheating device based on signals of the temperature sensor and the humidity sensor.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: February 7, 2006
    Assignee: Hyundai Motor Company
    Inventor: Byoung Woo Hwang