Patents by Inventor Even Stenberg

Even Stenberg 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 of removing nucleic acid contamination in amplification reactions
    Patent number: 6541204
    Abstract: The present invention provides a method of removing nucleic acid contamination in an amplification reaction which comprises use of a thermolabile DNase and a method of preventing or reducing false positive results due to carry-over in a nucleic acid amplification reaction, said method comprising using a thermolabile DNase to degrade carried-over non-target double-stranded DNA present in the amplification reaction mixture. A thermolabile DNase from the shrimp Pandalus borealis has been identified which is suitable for use in the methods of the invention.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: April 1, 2003
    Assignee: Norwegian Institute of Fisheries & Aquaculture Ltd.
    Inventors: Inge Waller Nilsen, Erling Sandsdalen, Even Stenberg
  • METHOD OF REMOVING NUCLEIC ACID CONTAMINATION IN AMPLIFICATION REACTIONS
    Publication number: 20020042052
    Abstract: The present invention provides a method of removing nucleic acid contamination in an amplification reaction which comprises use of a thermolabile DNase and a method of preventing or reducing false positive results due to carry-over in a nucleic acid amplification reaction. said method comprising using a thermolabile DNase to degrade carried-over non-target double-stranded DNA present in the amplification reaction mixture. A thermolabile DNase from the shrimp Pandalus borealis has been identified which is suitable for use in the methods of the invention.
    Type: Application
    Filed: April 10, 2000
    Publication date: April 11, 2002
    Inventors: INGE WALLER NILSEN, ERLING SANDSDALEN, EVEN STENBERG
  • Cationic biopolymers
    Patent number: 5962663
    Abstract: The invention relates to new cationic biopolymers with an average molecular weight of 800,000 to 1,200,000 Dalton, a Brookfield viscosity (1% by weight in glycolic acid) below 5,000 mPas, a degree of deacetylation of 80 to 88% and an ash content of less than 0.3% by weight which are obtained by repeatedly subjecting crustacean shells to alternate acidic and alkaline degradation under defined conditions. Compared with known cationic biopolymers of the chitosan type, the new biopolymers form clear solutions and, at the same time, show excellent film-forming properties, despite their high molecular weight.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: October 5, 1999
    Assignees: Henkel Kommanditgesellschaft auf Aktien, Norwegian Institute of Fisheries and Aquaculture Ltd.
    Inventors: Rolf Wachter, Holger Tesmann, Ronald Svenning, Ragnar Olsen, Even Stenberg
  • Method for preparing enzymes from crustaceans
    Patent number: 5061627
    Abstract: A process for isolating valuable bioactive substances such as the enzymes alkaline phosphates, hyaluronidase and chitinase from crustacea, mainly shrimp, by extracting said enzymes with a water soluble eluant and to treat the extracted brine in the following process steps; purifying by centrifugation or filtration, purification, extraction and removal of unwanted substances and isolation of the valuable substances.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: October 29, 1991
    Assignee: Norsk Hydro A.S.
    Inventors: Ragnar L. Olsen, Even Stenberg, Erling Sandsdalen, Karl A. Almas