Patents by Inventor Sven E. Lindgren

Sven E. Lindgren 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 inhibiting microorganism growth
    Patent number: 5849289
    Abstract: The antibiotic reuterin is obtained by cultivating strains of Lactobacillus reuteri under controlled conditions. Reuterin has inhibitory activity against Gram positive and Gram negative bacteria, against the yeast, Saccharomyces cerevisiae, and against the protozoan, Trypanosoma cruzi. Reuterin-producing strains are identified by growth inhibition of susceptible microorganisms in the presence of glycerol or glyceraldehyde. Lactobacillus reuteri strains may be used for reducing the number of non-Lactobacillus reuteri bacteria in food items and in the gastrointestinal tracts of animals.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 15, 1998
    Assignee: Biogaia Biologics AB
    Inventors: Walter J. Dobrogosz, Sven E. Lindgren
  • Method for inhibiting microorganism growth
    Patent number: 5439678
    Abstract: The antibiotic reuterin is obtained by cultivating strains of Lactobacillus reuteri under controlled conditions. Reuterin has inhibitory activity against Gram positive and Gram negative bacteria, against the yeast, Saccharomyces cerevisiae, and against the protozoan, Trypanosoma cruzi. Reuterin producing strains are identified by growth inhibition of suspectible microorganisms in the presence of glycerol or glyceraldehyde.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: August 8, 1995
    Assignee: Biogaia Biologics AB
    Inventors: Walter J. Dobrogosz, Sven E. Lindgren
  • Antibiotic reuterin
    Patent number: 5413960
    Abstract: The antibiotic .beta.-hydroxypropionaldehyde is obtained by cultivating strains of Lactobacillus reuteri under anaerobic conditions in the presence of glycerol or glyceraldehyde. This antibiotic has activity against Gram positive and Gram negative bacteria, against the yeast, Saccharomyces cerevisiae, and against the protozoan, Trypanosoma cruzi, and decreases ribonucleotide reductase activity.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: May 9, 1995
    Assignee: Biogaia AB
    Inventors: Walter J. Dobrogosz, Sven E. Lindgren
  • Method of determining the presence of an antibiotic produced by Lactobacillus reuteri
    Patent number: 5352586
    Abstract: The antibiotic reuterin is obtained by cultivating strains of Lactobacillus reuteri under controlled conditions. Reuterin has inhibitory activity against Gram positive and Gram negative bacteria, against yeast, Saccharomyces cerevisiae, and against the protozoan, Trypanosoma cruzi. Reuterin producing strains are identified by grown inhibition of susceptible microorganisms in the presence of glycerol or glyceraldehyde.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: October 4, 1994
    Assignee: Biogaia AB
    Inventors: Walter J. Dobrogosz, Sven E. Lindgren
  • Microorganism testing device and method
    Patent number: 4054491
    Abstract: The present invention relates to a method and device for the examination of a sample which may contain microorganisms, whereby the sample is mixed with a microorganism growth medium, and optionally an indicator, the mixture is incubated and thereafter examined for the presence of growing colonies.
    Type: Grant
    Filed: November 13, 1974
    Date of Patent: October 18, 1977
    Assignee: Kemanord AB
    Inventor: Sven E. Lindgren