Patents by Inventor Lars-Erik Arvidsson

Lars-Erik Arvidsson 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 for the capillary electrophoresis of nucleic acids, proteins and low molecular charged compounds
    Patent number: 6322682
    Abstract: A method of capillary electrophoresis utilizing a capillary tube made up of hydrophobic plastics, charactarized in that the inner surface of said capillary is coated with a hydrophilic polymer comprising a polyhydroxy polymer exhibiting groups —B—R, where R is a hydrocarbyl group and B is a bridge binding to the polyhydroxy polymer, preferably by substituting a hydrogen in a hydroxy group of the polyhydroxy polymer.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: November 27, 2001
    Assignee: Gyros AB
    Inventors: Lars-Erik Arvidsson, Björn Ekström
  • Anion exchanger
    Patent number: 5466368
    Abstract: An ion exchanger for chromatographic separation has the structureP--S--A,wherein P is an insoluble support, S is a spacer, and A is a functional ligand. According to the invention the functional ligand A comprises two positively charged atoms, each selected from nitrogen and sulphur, at a distance of two atoms from each other, with the proviso that A can not be 4-methyl-1,4-diazabicyclo[2.2.2]octan-1-yl, 1,4,4-trimethylpiperazinium-1-yl, 1,4-dimethyl-1,4-diazabicyclo[2.2.2]octan-2-yl or 1,1,4,4,4-pentamethyl-1,4-diazabutan-1-yl.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: November 14, 1995
    Assignee: Pharmacia LKB Biotechnology AB
    Inventors: Lars-Erik Arvidsson, Hans Berg, Bjorn Engstrom, Gunnar Hagstrom