Patents by Inventor Arvid Honkanen

Arvid Honkanen 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).

  • Process for expanding
    Patent number: 4056587
    Abstract: Foam styrene polymer sheet is expanded to form foam products having lower density by a process which includes (a) contacting the foam styrene polymer sheet with an aqueous composition, (b) maintaining the aqueous composition in contact with the sheet to effect impregnation of the sheet by the aqueous composition, and thereafter (c) heating the impregnated sheet to expand the sheet. The expanded products are useful as thermal insulation and packaging material.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: November 1, 1977
    Assignee: W. R. Grace & Co.
    Inventors: Arvid Honkanen, Paul Joonase
  • Low density laminated foam and process and apparatus for producing same
    Patent number: 3930917
    Abstract: An apparatus and process for laminating a flexible sheet of covering material to a foamed thermoplastic sheet wherein the process includes the steps of expanding aged or directly extruded thermoplastic foam sheet by heat until the foam has reached its softening point; heating the covering material to above the melting point of the foam; and, applying the heated covering material to the softened foam sheet to bond the sheet to the foam thereby forming a laminated product.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: January 6, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Michael D. Esakov, Arvid Honkanen