Patents by Inventor Per Boman

Per Boman 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).

  • Method for consolidating a body of earth
    Patent number: 4187041
    Abstract: Relatively impermeable earth such as clay is made permeable so as to effectively produce drains or draining layers by injecting into the earth one or more substances chemically reacting with and/or physically cooperating with one or more of the natural constituents of the earth to thereby increase the permeability within the injection zone and to thereby produce a drain or a draining layer.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: February 5, 1980
    Assignee: Linden-Alimak A.B.
    Inventors: Per Boman, Bengt Broms