Patents by Inventor Helena Bergsland

Helena Bergsland 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 determination of the concentration of micro-organisms
    Patent number: 6777201
    Abstract: The concentration or amount of living micro-organisms in a liquid sample can be determined in a reliable manner by determining the concentration of a substance, secreted by the micro-organisms, in the sample, which sample then is subjected to a treatment killing the micro-organisms; whereupon the concentration of the substance is measured anew. The relation between the first and second concentration is used as a measure of the concentration of micro-organisms in the sample.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: August 17, 2004
    Assignee: BTG Kalle Inventing AB
    Inventors: Gerdt Fladda, Stig Norder, Helena Bergsland
  • Method for the measurement of dithionite concentration
    Publication number: 20040040867
    Abstract: The concentration of dithionite can be fast and accurately measured in a sample by a method wherein a predetermined amount of peroxide is added to said sample, following which catalase is added to said sample in an incrementally growing dose during a predetermined time, monitoring the production of oxygen in the sample, and recording the onset of oxygen production as well as the amount of oxygen produced as a function of time. The recorded values are then taken as a measure of the amount of dithionite present in the sample.
    Type: Application
    Filed: September 4, 2003
    Publication date: March 4, 2004
    Applicant: BTG KALLE INVENTING AB
    Inventors: Helena Bergsland, Stig Norder