Patents by Inventor Per-Ake Pernemalm

Per-Ake Pernemalm 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).

  • Process and means for down stream processing
    Publication number: 20020153320
    Abstract: A method for recovering a desired component from a sample solution with beads under stabilized fluidized bed conditions is provided. Also provided are support beads for use in downstream processing which comprise a polymer matrix into which glass or silica particles have been incorporated.
    Type: Application
    Filed: April 5, 2002
    Publication date: October 24, 2002
    Applicant: PHARMACIA LKB BIOTECHNOLOGY AB
    Inventors: Mats Carlsson, Jan-Gunnar Gustafsson, Per Hedman, Per-Ake Pernemalm, Jorgen Lonngren, Annika Lindgren
  • Process and means for down stream processing
    Patent number: 5522993
    Abstract: Support beads for downstream processing comprising a polymer, esp. a polysaccharide, matrix into which glass or silica particles, preferably quartz particles, have been incorporated, and their use in downstream processing, especially stabilized fluidized bed separations.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: June 4, 1996
    Assignee: Pharmacia Biotech AB
    Inventors: Mats Carlsson, Jan-Gunnar Gustafsson, Per Hedman, Per-Ake Pernemalm, Jorgen Lonngren
  • Polysaccharide crosslinked separation material and its preparation
    Patent number: 4665164
    Abstract: A separation material of crosslinked agarose in which the agarose is crosslinked using at least one bi- or polyfunctional crosslinking agent, which gives a chain of 6 to 12 atoms between two binding points, on one hand and using at least one bifunctional crosslinking agent, which gives a chain of 2 to 5 atoms between two binding points on the other.The separation material is prepared by crosslinking agarose in two steps with (a) a bi- or polyfunctional crosslinking agent, which gives a chain of 6 to 12 atoms between two binding points and (b) a bifunctional crosslinking agent, which gives a chain of 2 to 5 atoms between two binding points, preferably in the order mentioned.
    Type: Grant
    Filed: July 10, 1984
    Date of Patent: May 12, 1987
    Assignee: Pharmacia Aktiebolag
    Inventors: Per-Ake Pernemalm, Mats Carlsson, Goran Lindgren