Patents by Inventor Zeljko Sikman

Zeljko Sikman 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).

  • Publication number: 20200181361
    Abstract: An epoxy resin composition including an epoxy functionalized resin, a hardener, and an internal mold release agent, wherein the epoxy functionalized resin has a monohydrolyzed resin content of at least about 0.1 wt %.
    Type: Application
    Filed: February 6, 2018
    Publication date: June 11, 2020
    Inventors: Aikaterini Tsoutsoura, Timothy A. Morley, Rainer Koeniger, Luca Lotti, Nebojsa Jelic, Zeljko Sikman
  • Publication number: 20200148811
    Abstract: A novel sulfanilamide containing epoxy resin composition capable of fast curing without negative impact on glass transition temperature or mechanical performance.
    Type: Application
    Filed: April 11, 2018
    Publication date: May 14, 2020
    Inventors: Timothy A. Morley, Rainer Koeniger, Luca Lotti, Nebojsa Jeiic, Zeljko Sikman, Martin Reimers
  • Patent number: 10479858
    Abstract: A two-component curable epoxy resin system including a dye solution. The resin system includes an epoxy resin component containing at least 80% by weight of a polyglycidyl ether of a polyphenol. The system also includes a hardener mixture containing mainly polyethylene tetraamines. The system includes triethylene diamine in specific amounts as a catalyst. The system has beneficial curing characteristics with desired color that make it useful for producing fiber-reinforced composites in a resin transfer molding process.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: November 19, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Timothy A. Morley, Rainer Koeniger, Martin Reimers, Peter J. Cate, Nebojsa Jelic, Zeljko Sikman
  • Publication number: 20190194382
    Abstract: The present invention provides curable moldable compositions comprising from 10 to 80 volume % of heat resistant fiber compositions, a two component resin mixture of (i) one or more epoxy resins, and (ii) a hardener comprising a combination of triethylenetetraamine (TETA) and from 3 to 15 wt. %, based on the weight of the TETA, of 2-phenylimidazole (2-PI). The compositions cure to provide composite articles having a short demold time of 90 s or less at 130° C. and 101 kPa and a high DSC glass transition temperature (Tg) of from 130 to 180° C. when cured at 130° C. for 90 seconds at a pressure of 101 kPa. The invention enables lightweight, heat resistant composite articles, such as for use in automotive applications.
    Type: Application
    Filed: May 15, 2017
    Publication date: June 27, 2019
    Inventors: Nebojsa JELIC, Rainer KOENIGER, Lucca LOTTI, Timothy MORLEY, Zeljko SIKMAN, Alkaterini TSOUTSOURA
  • Patent number: 10308757
    Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: June 4, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Timothy A. Morley, Rainer Koeniger, Nebojsa Jelic, Rolf Hueppi, Zeljko Sikman
  • Publication number: 20180179330
    Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.
    Type: Application
    Filed: June 29, 2016
    Publication date: June 28, 2018
    Applicant: Dow Global Technologies, LLC
    Inventors: Kirschan Jeltsch, Timothy A. Morley, Rainer Koeniger, Nebojsa Jelic, Zeljko Sikman, Gyongyi Gulyas, Luca Lotti
  • Publication number: 20180162990
    Abstract: A two-component curable epoxy resin system including a dye solution. The resin system includes an epoxy resin component containing at least 80% by weight of a polyglycidyl ether of a polyphenol. The system also includes a hardener mixture containing mainly polyethylene tetraamines. The system includes triethylene diamine in specific amounts as a catalyst. The system has beneficial curing characteristics with desired color that make it useful for producing fiber-reinforced composites in a resin transfer molding process.
    Type: Application
    Filed: June 22, 2016
    Publication date: June 14, 2018
    Applicant: The Dow Chemical Company
    Inventors: Timothy A. Morley, Rainer Koeniger, Martin Reimers, Peter J. Cate, Nebojsa Jelic, Zeljko Sikman
  • Publication number: 20170233521
    Abstract: A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.
    Type: Application
    Filed: November 3, 2015
    Publication date: August 17, 2017
    Applicant: Dow Europe GmbH
    Inventors: Timothy A Morley, Rainer Koeniger, Nebojsa Jelic, Rolf Hueppi, Zeljko Sikman