Patents by Inventor Ren-Kuen Chang

Ren-Kuen 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).

  • Fire-resistant polyurethane foam
    Patent number: 8865782
    Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: October 21, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Ju Chen, Sung-Jeng Jong, Ren-Kuen Chang, Chin-Shang Hsu, Jer-Young Chen, Yih-Her Chang, Chei Kao
  • FIRE-RESISTANT POLYURETHANE FOAM
    Publication number: 20140058006
    Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.
    Type: Application
    Filed: November 6, 2013
    Publication date: February 27, 2014
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Po-Ju Chen, Sung-Jeng Jong, Ren-Kuen Chang, Chin-Shang Hsu, Jer-Young Chen, Yih-Her Chang, Chei Kao
  • Fire-resistant polyurethane foam and fabrication method thereof
    Patent number: 8604093
    Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: December 10, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Ju Chen, Sung-Jeng Jong, Ren-Kuen Chang, Chin-Shang Hsu, Jer-Young Chen, Yih-Her Chang, Chei Kao
  • FIRE-RESISTANT POLYURETHANE FOAM AND FABRICATION METHOD THEREOF
    Publication number: 20110124760
    Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.
    Type: Application
    Filed: October 8, 2010
    Publication date: May 26, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Po-Ju Chen, Sung-Jeng Jong, Ren-Kuen Chang, Chin-Shang Hsu, Jer-Young Chen, Yih-Her Chang, Chei Kao
  • Preparation of gas separation membrane and spiral wound gas separation module
    Patent number: 5236643
    Abstract: The invention relates to a process for preparing gas separation membranes or modules. Membrane forming material is cast into a wet membrane which is wound into a spiral module. The spiral module is arranged in a closed circulating apparatus. Exchanging solvents or treating solutions are circulated through the circulating apparatus and the spiral module for an appropriate period of time. The module and circulating apparatus are purged until the membrane is dry, thus producing a gas separation membrane or module.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: August 17, 1993
    Assignee: Industrial Technology Research Institute
    Inventors: Tsai-Wie Tseng, Yih-Her Chang, Juh-Shyong Lee, Shyh-Yeu Wang, Woei-Ling Lin, Ren-Kuen Chang