Patents by Inventor Kwang Huh

Kwang Huh 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).

  • Mixed PTFE powder and a high density multi expanded (HDME) PTFE yarn with excellent tensile strength using the PTFE powder, and methods of preparing the same
    Patent number: 9637577
    Abstract: A mixed PTFE powder according to the present invention is prepared by the steps of preparing a PTFE mixed dispersion by dispersing MoS2, Al2O3, and Al(OH)3 in a PTFE emulsion; dehydrating the PTFE mixed dispersion by adding Na2CO3 into the PTFE mixed dispersion to form a cake type compound; preparing an ingot by drying the cake type compound for about 16 to 24 hours at the temperature of about 120 to 190° C.; and pulverizing the ingot in a 30-35 mesh vibrating net. An HDME PTFE yarn according to the present invention is prepared by the steps of preparing the mixed PTFE powder; adding kerosene of about 18 to 25 wt. % as solvent to the mixed PTFE powder and maintaining the resultant for about 40 to 50 hours at the temperature of about 30 to 50° C.; extruding the resulting mixed PTFE into the form of rod at about 70 to 90° C.; calendering the rod into the form of sheet at about 100 to 150° C., the width of the sheet being about 100 to 300 mm and the thickness about 0.3 to 0.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: May 2, 2017
    Assignee: Ji Joong Hae Ind. Co., Ltd.
    Inventor: Kwang Huh
  • Mixed PTFE Powder and a High Density Multi Expanded (HDME) PTFE Yarn with Excellent Tensile Strength Using the PTFE Powder, and Methods of Preparing the Same
    Publication number: 20160319055
    Abstract: A mixed PTFE powder according to the present invention is prepared by the steps of preparing a PTFE mixed dispersion by dispersing MoS2, Al2O3, and Al(OH)3 in a PTFE emulsion; dehydrating the PTFE mixed dispersion by adding Na2CO3 into the PTFE mixed dispersion to form a cake type compound; preparing an ingot by drying the cake type compound for about 16 to 24 hours at the temperature of about 120 to 190° C.; and pulverizing the ingot in a 30-35 mesh vibrating net. An HDME PTFE yarn according to the present invention is prepared by the steps of preparing the mixed PTFE powder; adding kerosene of about 18 to 25 wt. % as solvent to the mixed PTFE powder and maintaining the resultant for about 40 to 50 hours at the temperature of about 30 to 50° C.; extruding the resulting mixed PTFE into the form of rod at about 70 to 90° C.; calendering the rod into the form of sheet at about 100 to 150° C., the width of the sheet being about 100 to 300 mm and the thickness about 0.3 to 0.
    Type: Application
    Filed: April 21, 2016
    Publication date: November 3, 2016
    Applicant: Ji Joong Hae Ind. Co., Ltd.
    Inventor: Kwang Huh