Patents by Inventor Ralf Andersson

Ralf Andersson 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).

  • Publication number: 20050179151
    Abstract: The present invention is a process of manufacture of one or more polysaccharide beads, comprising generating an aerosol of an aqueous polysaccharide solution, cooling the droplets of said aerosol in air to initiate gelling thereof and collecting droplets as gelled beads in a liquid or on a surface, characterised by adding a hydrophilic vapour pressure-lowering agent to said polysaccharide solution.
    Type: Application
    Filed: April 17, 2003
    Publication date: August 18, 2005
    Inventors: Ralf Andersson, Hans Berg, Ingemar Jonsson, Anders Larsson
  • Publication number: 20050110176
    Abstract: The invention refers to a method of controlling the porosity of porous spherical particles produced from a polysaccharide dissolved in a solvent, in which it can be gelled. The polysaccharide solution is finely divided by mechanical means into spherical droplets which are allowed to pass through a humid atmosphere and transferred to a capturing medium while controlling the temperature and humidity of humid atmosphere.
    Type: Application
    Filed: December 15, 2004
    Publication date: May 26, 2005
    Inventors: Ralf Andersson, Ingemar Jonsson
  • Publication number: 20050112280
    Abstract: Method and device for continuously producing a coherent layer of a liquid/melt of even thickness by means of centrifugal action along the entire periphery of a rotating disk (13, 113), liquid/melt being supplied to the disk around its entire axis of rotation from means (12, 112) and leaving the disk as individual droplets. The means (12, 112) distributing the liquid/melt onto the disk (13, 113) has according to the invention essentially the same speed and direction of rotation as the disk, and the liquid/melt undergoes under the influence of centrifugal action circumferentially a spreading and change in velocity across the disk (13, 113) in contact with the same.
    Type: Application
    Filed: December 15, 2004
    Publication date: May 26, 2005
    Inventors: Ralf Andersson, Ingemar Jonsson
  • Patent number: 4978069
    Abstract: A method and an apparatus for dividing a liquid into droplets is disclosed. One or several disks (35) rotate about an axis (A) and are provided, at their outer peripheral edges, with circumferentially equidistant, uniform cusps. A distributing device (20) is adapted to distribute the liquid uniformly and circumferentially on the disks (35), whereby the liquid discharged onto the disks (35) is formed into a uniform thickness film which spreads radially outwardly towards the cusps (36) and is divided thereby into uniform size droplets. The distributing device (20) may comprise a dosing container (21) which is rotationally independent of the disks (30) and from which the liquid is dosed through one or several dosing openings (26) onto the disk or disks (35), the disks (35) preferably being rotated relative to the dosing openings (26).
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: December 18, 1990
    Inventors: Ralf Andersson, Alf Andersson
  • Patent number: D276940
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 25, 1984
    Assignees: Malon AB, Ledu Corporation
    Inventor: Ralf Andersson