Patents by Inventor Stuart D. Stein

Stuart D. Stein 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).

  • Method for separating fluids using a carbonaceous polymeric filter having a LOI greater than 40
    Patent number: 5264137
    Abstract: An improvement in an apparatus for separating fluids or non-biotechnological products in solution, wherein said apparatus has a fibrous element which permits flow of fluids therethrough and is composed of irreversibly set non-graphitic carbonaceous fibers having an LOI greater than 40.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: November 23, 1993
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Stuart D. Stein
  • Method and apparatus for separating fluids using a carbonaceous polymeric filter having a LOI greater than 40
    Patent number: 5151198
    Abstract: An improvement in an apparatus for separating fluids or non-biotechnological products in solution, wherein said apparatus has a fibrous element which permits flow of fluids therethrough the improvement wherein the fibrous element is composed of non-flammable irreversibly heat set non-graphitic carbonaceous fibers having an LOI greater than 40.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: September 29, 1992
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Stuart D. Stein