Patents Assigned to Insul Holz-Beton Systems Inc.
  • Method of making single wood concrete layer sound absorption panel
    Patent number: 5324469
    Abstract: A single wood concrete layer, sound absorption panel is formed as a single wood concrete layer, cast panel body of kaolin mineralized organic fiber chips encased in Portland cement with steel reinforcement. The panels have a noise reduction coefficient of at least about 0.85 for a panel thickness of about 10 cm and a panel density of 86.5 kg/m.sup.2.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: June 28, 1994
    Assignee: Insul Holz-Beton Systems, Inc.
    Inventors: Hansruedi Walter, Leni M Walter-Gurzeler
  • Double coated free aggregate usable in wood concrete technology and method of making the same
    Patent number: 5314744
    Abstract: A free aggregate usable in forming wood concrete products is formed by a process including the encasing of a free aggregate of individual chips with an inorganic mineralizing coating to a degree sufficient to seal in water-soluble organic matter held in pores of the chips, while maintaining the individual chips in a free aggregate form. The encased chips are then seasoned for 15 to 25 days and again coated with a second mineralizing coating.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: May 24, 1994
    Assignee: Insul Holz-Beton Systems Inc.
    Inventors: Hansruedi Walter, Leni M. Walter-Gurzeler