Patents by Inventor Gote V. Norrbrand

Gote V. Norrbrand 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).

  • Silencer
    Patent number: 4458779
    Abstract: A silencer comprising one or more sound-absorbing parts of ceramic material. The ceramic material is porous and the sound-absorbing parts are self-supporting and have a specific resistance to air flow of 10.sup.3 -10.sup.7 Pas/m.sup.2 and a compression strength of at least 40 kN/m.sup.2, preferably at least 400 kN/m.sup.2.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: July 10, 1984
    Assignee: Antiphon AB
    Inventors: Bengt R. Johansson, Lennart H. Slycke, Gote V. Norrbrand