Patents by Inventor Per O. Persson

Per O. Persson 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).

  • Patent number: 4088796
    Abstract: In making dried animal feed from substantially semi-fluid non-mouldable manure from poultry and other domestic animals the non-mouldable manure is converted into a mouldable product by mixing it with already dried manure and then moulding the product into particles of substantially equal size, which are dried by imparting to the particle a fluidizing movement by means of a flowing hot gas in a so-called fluidized bed.A plant for making dried animal feed from substantially semi-fluid non-mouldable manure from poultry and other domestic animals comprises a mixer with inlets for both the non-mouldable manure and already dried manure, a unit disposed after the mixer for moulding the mixed product into particles, and a container with a perforated bottom in which a fluidizing movement is imparted to the particles in a so-called fluidized bed.
    Type: Grant
    Filed: May 19, 1976
    Date of Patent: May 9, 1978
    Assignee: Ingenjorsfirman Per Oskar Persson AB
    Inventor: Per O. Persson