Patents by Inventor Theodore John Lang

Theodore John Lang 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).

  • High temperature and high humidity release coating for polymer film
    Patent number: 7662322
    Abstract: A coating composition for use as a surface coating for polymer release films for use in at least one of high temperature and high humidity applications, which comprises a solution of at least one hydroxypropyl methylcellulose having hydroxypropyl molar substitution of from 0 to about 0.82 in combination with at least one water-borne fluorochemical additive selected from perfluoralkyl methacrylic acid copolymers.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: February 16, 2010
    Assignee: Exopack Preformance Films Inc.
    Inventors: Sumita Sanjeevi Ranganathan, Theodore John Lang, Marek Andrej Szymula
  • High temperature and high humidity release coating for polymer film
    Patent number: 6776831
    Abstract: The present invention relates to a release coating composition that may be applied to a film that may then be used as a substrate useful for applications requiring release for a broad range of temperatures and high humidity conditions, which temperatures may range from about 20° C. to about 210° C. These applications include release substrate used in the manufacture of calendared cured sheet rubber and molding paste composites, such as sheet molding compound (SMC), thick molding compound (TMC), bulk molding compound (BMC) and fiberglass composites. The release coating composition comprises a solution of a hydroxypropyl methylcellulose having hydroxypropyl molar substitution of from 0 to about 0.82. In a preferred form, particulate solids are present in the composition.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: August 17, 2004
    Assignee: DuPont Canada Inc.
    Inventors: Divya Chopra, Benjamin Andrew Smillie, Theodore John Lang
  • High temperature and high humidity release coating for polymer film
    Publication number: 20020136843
    Abstract: The present invention relates to a release coating composition that may be applied to a film that may then be used as a substrate useful for applications requiring release for a broad range of temperatures and high humidity conditions, which temperatures may range from about 20° C. to about 210° C. These applications include release substrate used in the manufacture of calendared cured sheet rubber and molding paste composites, such as sheet molding compound (SMC), thick molding compound (TMC), bulk molding compound (BMC) and fiberglass composites. The release coating composition comprises a solution of a hydroxypropyl methylcellulose having hydroxypropyl molar substitution of from 0 to about 0.82. In a preferred form, particulate solids are present in the composition.
    Type: Application
    Filed: July 20, 2001
    Publication date: September 26, 2002
    Inventors: Divya Chopra, Benjamin Andrew Smillie, Theodore John Lang