Patents by Inventor Hobart Kalkstein

Hobart Kalkstein 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).

  • Insulated pipe and method for preparing same
    Publication number: 20060272727
    Abstract: The invention provides an insulated pipe-in-pipe assembly comprising (a) at least one inner pipe, (b) an outer pipe disposed around the at least one inner pipe so as to create an annular space between the outer and inner pipes, (c) porous, resilient, compressible material disposed in the annular space, and (d) a remnant of a container that previously was positioned in the annular space and previously held the compressible material in a volume less than the volume of the compressible material in the annular space. The invention also provides a method for making such an insulated pipe-in-pipe assembly.
    Type: Application
    Filed: January 21, 2006
    Publication date: December 7, 2006
    Inventors: John Dinon, Hobart Kalkstein, Nirmalya Maity, Ravijit Paintal, Aaron Johnson, Andries Plessis