Patents by Inventor Dieter Brauer

Dieter Brauer 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).

  • Phosphinothricin-resistance gene, and its use
    Patent number: 5879903
    Abstract: Selection of Streptomyces viridochromogenes DSM 4112 for resistance to phosphinothricyl-alanyl-alanine (PTT) results in PTT-resistance selectants. The DNA fragment which carries the phosphinothricin(PTC)-resistance gene is obtained from the total DNA of these selectants by cutting with BamHI, cloning of a fragment 4.0 kb in size, and selection for PTT resistance. This gene is suitable for the production of PTC-resistant plants, and as a resistance marker and for the selective N-acetylation of the L-form of racemic PTC.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 9, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Eckhard Strauch, Wolfgang Wohlleben, Walter Arnold, Renate Alijah, Alfred Puhler, Gerhard Wohner, Rudiger Marquardt, Susanne Grabley, Dieter Brauer, Klaus Bartsch
  • Phosphinothricin-resistance gene, and its use
    Patent number: 5637489
    Abstract: Selection of Streptomyces viridochromogenes DSM 4112 for resistance to phosphinothricyl-alanyl-alanine (PTT) results in PTT-resistance selectants. The DNA fragment which carries the phosphinothricin(PTC)-resistance gene is obtained from the total DNA of these selectants by cutting with BamHI, cloning of a fragment 4.0 kb in size, and selection for PTT resistance. This gene is suitable for the production of PTC-resistant plants, and as a resistance marker and for the selective N-acetylation of the L-form of racemic PTC.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 10, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Eckhard Strauch, Wolfgang Wohlleben, Walter Arnold, Renate Alijah, Alfred Puhler, Gerhard Wohner, Rudiger Marquardt, Susanne Grabley, Dieter Brauer, Klaus Bartsch
  • Oxygen bleaching of cotton linters by disproportionation of hydrogen peroxide
    Patent number: 5322647
    Abstract: In a process for chlorine-free bleaching of cellulose with an .alpha.-cellulose content of more than 90%, preferably from boiled cotton linters, more than 75% whiteness is achieved in a single-stage process using oxygen. The bleaching is conducted using the oxygen obtained by disproportionation of peroxo compounds in the pH range from 6 to 13 and with the bleaching time, depending on the bleaching temperature of 35.degree. C. to 15.degree. C., being between 15 and 150 minutes.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: June 21, 1994
    Assignee: Akzo N.V.
    Inventors: Angelika Reiche, Joachim Behnke, Hans-Dieter Brauer
  • Phosphinothricin-resistance gene, and its use
    Patent number: 5273894
    Abstract: Selection of Streptomyces viridochromogenes DSM 4112 for resistance to phosphinothricyl-alanyl-alanine (PTT) results in PTT-resistance selectants. The DNA fragment which carries the phosphinothricin(PTC)-resistance gene is obtained from the total DNA of these selectants by cutting with BamHI, cloning of a fragment 4.0 kb in size, and selection for PTT resistance. This gene is suitable for the production of PTC-resistant plants, and as a resistance marker and for the selective N-acetylation of the L-form of racemic PTC.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: December 28, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Eckhard Strauch, Wolfgang Wohlleben, Walter Arnold, Renate Alijah, Alfred Puhler, Gerhard Wohner, Rudiger Marquardt, Susanne Grabley, Dieter Brauer, Klaus Bartsch
  • Phosphinothricin-resistance gene
    Patent number: 5077399
    Abstract: Phosphinothricin (PTC) selection of bacteria which are not fungus-like yields PTC-resistant selectants. The DNA fragment which carries the resistance gene is obtained from the complete DNA of these selectants by constructing a gene bank and screening for chemical modification of PTC. The resistance gene can be localized to a fragment which is 2 kb in size, and selection for PTC resistance. This gene is suitable for producing PTC-resistant plants and propagation material thereof, and as a resistance marker as well. Microorganisms which contain this PTC-resistance gene can be used in sewage treatment plants.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: December 31, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Brauer, Klaus Bartsch, Gunter Donn