Patents by Inventor Ralf Goran Andersson

Ralf Goran 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).

  • Method and device for producing a coherent layer of even thickness of liquid or melt on a rotating disk
    Patent number: 7341202
    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: Grant
    Filed: December 15, 2004
    Date of Patent: March 11, 2008
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Ralf Goran Andersson, Ingemar Jonsson
  • Method and device for producing a coherent layer of even thickness of liquid or melt on a rotating disk
    Patent number: 6843427
    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: Grant
    Filed: November 29, 2000
    Date of Patent: January 18, 2005
    Assignee: Amersham Biosciences AB
    Inventors: Ralf Goran Andersson, Ingemar Jonsson
  • Method of producing porous spherical particles
    Patent number: 6841097
    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: Grant
    Filed: November 29, 2000
    Date of Patent: January 11, 2005
    Assignee: Amersham Biosciences AB
    Inventors: Ralf Goran Andersson, Ingemar Jonsson
  • Method of producing porous spherical particles
    Publication number: 20030052426
    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: September 16, 2002
    Publication date: March 20, 2003
    Inventors: Ralf Goran Andersson, Ingemar Jonsson
  • Method and device for producing a coherent layer of even thickness of liquid or melt on a rotating disk
    Publication number: 20030029928
    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: August 21, 2002
    Publication date: February 13, 2003
    Inventors: Ralf Goran Andersson, Ingermar Jonsson