Patents by Inventor Kurt Dorreich

Kurt Dorreich 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).

  • Rhamnogalacturonase, corresponding DNA sequence, rhamnogalacturonase containing enzyme preparation and use of the enzyme preparation
    Patent number: 6001627
    Abstract: The present invention relates to rhamnogalacturonases derived from a strain of Aspergillus japonicus which (a) has a pH-optimum between 6.5 and 7.0; (b) retains at least 80% of the maximal activity throughout the pH range of 5.5-12; (c) has a temperature optimum of about 40.degree. C.; and (d) retains at least 80% of the maximal activity throughout the temperature range of 20-60.degree. C. The present invention relates to rhamnogalacturonases derived from a strain of Aspergillus aculeatus which (a) has a pH-optimum of about 5.0; (b) retains at least 80% of the maximal activity throughout the pH range of 3-6.5; (c) has a temperature optimum of about 40.degree. C.; and (d) retains at least 80% of the maximal activity throughout the temperature range of 5-50.degree. C.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: December 14, 1999
    Assignee: Novo Nordisk A/S
    Inventors: Kurt Dorreich, Henrik Dalb.o slashed.ge, Jan M.o slashed.ller Mikkelsen, Flemming Mark Christensen, Torben Halkier
  • Method for production of a fruit or vegetable juice concentrate
    Patent number: 5731018
    Abstract: Method for production of a fruit or vegetable juice concentrate, the steps including milling of the fruit or vegetables in a fruit or vegetable mill with addition of enzymes, heating of the formed mash, stirring of the heated mash with aeration, pressing of the heated aerated mash, centrifugation of the liquid phase from the press, recovery of aroma components by distillation of the supernatant from the centrifugation, and treatment of the dearomatized supernatant from the centrifugation for final degradation of starch and pectin in a holding tank, the treated dearomatized supernatant from the centrifugation is filtered on an ordinary filter, whereafter the filtrate is concentrated. In relation to this method an ordinary filter is used, which is much cheaper than the hitherto used ultrafiltration equipment.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: March 24, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Walter Janda, Kurt Dorreich
  • Endo-.beta.-1,4-glucanase and a DNA sequence
    Patent number: 5624835
    Abstract: The molecular characteristics and a partial amino acid sequence of an endo-.beta.-1,4-glucanase obtainable from Aspergillus aculeatus are described, as well as corresponding recombinant DNA sequences, vectors, and transformed hosts. Use of the endo-.beta.-1,4-glucanase or a pectinase preparation enriched with the endo-.beta.-1,4-glucanase for degradation or modification of plant cell walls is described.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: April 29, 1997
    Assignee: Novo Nordisk A/S
    Inventors: Kurt Dorreich, Flemming M. Christensen, Yvette Schnell, Marcel Mischler, Henrik Dalb.o slashed.ge, Hans P. Heldt-Hansen
  • Aspergillus aculeatus rhamnogalacturon acetyl esterases, DNA sequences encoding the enzymes and methods of use thereof
    Patent number: 5585256
    Abstract: The present invention relates to rhamnogalacturon acetyl esterases derived from Aspergillus aculeatus and DNA Sequences encoding the enzymes. The present invention also relates to the use of rhamnogalacturon acetyl esterases for degrading modified hairy region.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: December 17, 1996
    Assignee: Novo Nordisk A/S
    Inventors: Kurt Dorreich, Flemming M. Christensen, Yvette Schnell, Marcel Mischler, Henrik Dalb.o slashed.ge, Hans P. Heldt-Hansen
  • .beta.-1,4-galactanase and a DNA sequence
    Patent number: 5474922
    Abstract: The present invention relates to .beta.-1,4-galactanase derived from A. aculeatus which have (a) a pH-optimum between 3.0 and 5.0, (b) an isoelectric point of 2.5-3.5, (c) a molecular weight of between 30,000 and 50,000, and (d) a temperature optimum between 10.degree. and 50.degree. C.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: December 12, 1995
    Assignee: Novo Nordisk A/S
    Inventors: Kurt Dorreich, Henrik Dalboge, Jan M. Mikkelsen, Marcel Mischler, Flemming M. Christensen
  • Enzymatic treatment of pomace
    Patent number: 4483875
    Abstract: Treatment of pomace or comminuted suspension of whole fruits and vegetables with SPS-ase alone or combined with cellulase to increase juice yield and improve separation of residual pomace solids from juice product.
    Type: Grant
    Filed: May 3, 1983
    Date of Patent: November 20, 1984
    Assignee: Novo Industri A/S
    Inventor: Kurt A. Dorreich