Patents by Inventor Edward Charles LeDuc

Edward Charles LeDuc 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 foam board systems and methods of producing the same
    Patent number: 6613425
    Abstract: An insulated foam board system of the present invention comprises a first layer, a second layer and a central layer. The first layer is made from a material selected from the group consisting of alkenyl aromatic polymers, polypropylenes, polyethylene terephthalates, polyethylenes and combinations thereof. The second layer is made from a material selected from the group consisting of alkenyl aromatic polymers, polypropylenes, polyethylene terephthalates, polyethylenes and combinations thereof. The central layer is located between the first layer and the second layer. The second layer is bonded to the first layer and the third layer. The central layer is made from a material selected from the group consisting of crystal polystyrene, impact polystyrene, polyethylene terephthalate and combinations thereof.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: September 2, 2003
    Assignee: Pactiv Corporation
    Inventor: Edward Charles LeDuc
  • Processes of forming an insulated foam board system
    Patent number: 6551435
    Abstract: An insulated foam board system of the present invention comprises a first layer, a second layer and a central layer. The first layer is made from a material selected from the group consisting of alkenyl aromatic polymers, polypropylenes, polyethylene terephthalates, polyethylenes and combinations thereof. The second layer is made from a material selected from the group consisting of alkenyl aromatic polymers, polypropylenes, polyethylene terephthalates, polyethylenes and combinations thereof. The central layer is located between the first layer and the second layer. The second layer is bonded to the first layer and the third layer. The central layer is made from a material selected from the group consisting of crystal polystyrene, impact polystyrene, polyethylene terephthalate and combinations thereof.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 22, 2003
    Assignee: Pactiv Corporation
    Inventor: Edward Charles LeDuc