Patents by Inventor Laader Berg

Laader Berg 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 the production of slabs or blocks of plastic foam
    Patent number: 4096220
    Abstract: Foam plastic is produced by pouring a mixture of liquid foam reactant into a channel-shaped conveyor where the mixture expands to form foam. The mixture is to begin with allowed to flow out beyond the breadth of the conveyor and is guided back to the normal conveyor breadth during the expansion period. An apparatus for such production includes a channel conveyor when the vertical side walls begin first after the cream-line, a scraper device being installed on each conveyor side to guide the foam in between the vertical side walls.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: June 20, 1978
    Inventor: Laader Berg