Patents by Inventor KARL K. CHANG

KARL K. 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).

  • Composite sheet and cargo container comprising same
    Patent number: 9302845
    Abstract: This invention is directed to a non-rigid composite sheet comprising in order a first component having an areal density of from 102 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer, a second component having an areal density of from 10 to 170 gsm comprising a flame resistant inorganic refractory layer adjacent to at least one protective polymeric layers, and a third component having an areal density of from 102 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: April 5, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Dariusz Wlodzimierz Kawka, Karl K. Chang
  • Composite sheet and cargo container comprising same
    Patent number: 9296555
    Abstract: This invention is directed to a non-rigid composite sheet comprising in order (i) a first component having an areal density of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer. (ii) a second component having an areal density of from 30 to 237 gsm comprising a flame resistant substrate and an inorganic refractory layer and (iii) a third component having an areal density of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: March 29, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Dariusz Wlodzimierz Kawka, Karl K. Chang
  • COMPOSITE SHEET AND CARGO CONTAINER COMPRISING SAME
    Publication number: 20140217092
    Abstract: This invention is directed to a non-rigid composite sheet comprising in order a first component having an areal density of from 102 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer, a second component having an areal density of from 10 to 170 gsm comprising a flame resistant inorganic refractory layer adjacent to at least one protective polymeric layers, and a third component having an areal density of from 102 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component.
    Type: Application
    Filed: January 22, 2014
    Publication date: August 7, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: DARIUSZ WLODZIMIERZ KAWKA, KARL K. CHANG
  • COMPOSITE SHEET AND CARGO CONTAINER COMPRISING SAME
    Publication number: 20140154444
    Abstract: This invention is directed to a non-rigid composite sheet comprising in order (i) a first component having an areal density of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer. (ii) a second component having an areal density of from 30 to 237 gsm comprising a flame resistant substrate and an inorganic refractory layer and (iii) a third component having an areal density of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component.
    Type: Application
    Filed: November 5, 2013
    Publication date: June 5, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: DARIUSZ WLODZIMIERZ KAWKA, KARL K. CHANG