Patents by Inventor Daniel Imeokparia

Daniel Imeokparia 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).

  • Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom
    Patent number: 6787580
    Abstract: Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 7, 2004
    Assignee: Dow Global Technologies Inc.
    Inventors: Yohannes Chonde, Daniel Imeokparia, John B. Horstman, Robert A. Kirchhoff, Kyung W. Suh
  • Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom
    Publication number: 20020077378
    Abstract: Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 20, 2002
    Inventors: Yohannes Chonde, Daniel Imeokparia, John B. Horstman, Robert A. Kirchhoff, Kyung W. Suh
  • Open-cell foam and method of making
    Patent number: 6174471
    Abstract: An open-cell polystyrene foam is provided which is formed from a blend of polystyrene and an ethylene-styrene interpolymer. The ethylene-styrene interpolymer functions as a cell opening agent, and is used to control the open cell content of the resulting foam, which may contain greater than 80 percent open cells. The foam is produced by an extrusion process in which carbon dioxide is used as the preferred blowing agent. The resulting foams may be formed into beads, plank, round, sheets, etc.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: January 16, 2001
    Assignee: The Dow Chemical Company
    Inventors: Chung P. Park, Bharat Chaudhary, Daniel Imeokparia
  • Open-cell foam and method of making
    Patent number: 6093752
    Abstract: An open-cell polystyrene foam is provided which is formed from a blend of polystyrene and an ethylene-styrene interpolymer. The ethylene-styrene interpolymer functions as a cell opening agent, and is used to control the open cell content of the resulting foam, which may contain greater than 80 percent open cells. The foam is produced by an extrusion process in which carbon dioxide is used as the preferred blowing agent. The resulting foams may be formed into beads, plank, round, sheets, etc.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: July 25, 2000
    Assignee: The Dow Chemical Company
    Inventors: Chung P. Park, Bharat Chaudhary, Daniel Imeokparia