Patents by Inventor Per-Johan Aronsson

Per-Johan Aronsson 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).

  • Moisture exchanging element and a method of its manufacture
    Patent number: 6440489
    Abstract: The invention relates to a bacteriostatic dehumidifying element that includes additives which inhibit the growth of microorganisms. The dehumidifying element is produced by a method that comprises the steps of: a) providing a piece of paper, such as facing paper and/or fluted paper; b) immersing the paper in a highly concentrated waterglass solution at a temperature c) in the range of 45-95° C., where said highly concentrated waterglass solution has a viscosity of at least 350 mPa·s at a temperature of 45° C.; d) cooling the immersed paper with air at a temperature of at highest 35° C., aid preferably at highest 25° C.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: August 27, 2002
    Assignee: Proflute AB
    Inventor: Per-Johan Aronsson