Patents by Inventor Roy T. Toomey

Roy T. Toomey 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).

  • Use of lignins in thermoplastics
    Patent number: 6485867
    Abstract: The instant invention is directed to the use of lignin in thermoplastics (such as: ultra-high molecular weight polyethylene (UHMWPE)). In the first aspect of the invention, lignins are added to a lead acid battery separator comprising a microporous membrane including an ultra-high molecular weight polyethylene, a filler, and a processing oil. In the second aspect of the invention, lignins are used as a processing aid in thermoplastics.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: November 26, 2002
    Assignee: Daramic, Inc.
    Inventors: Jaime Navarrete, A. Jeff Chapman, Chetan J. Parikh, Roy T. Toomey