Patents by Inventor Pia Van der Zee

Pia Van der Zee 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).

  • Alkaline bacillus amylase
    Patent number: 5856164
    Abstract: An .alpha.-amylase characterized by having a specific activity at least 25% higher than the specific activity of Termamyl.RTM. at a temperature in the range of 25.degree. C. to 55.degree. C. and at a pH value in the range of pH 8 to pH 10.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: January 5, 1999
    Assignee: Novo Nordisk A/S
    Inventors: Helle Outtrup, Henrik Bisg.ang.rd-Frantzen, Peter Rahbek stergaard, Michael Dolberg Rasmussen, Pia Van Der Zee
  • Amylase variants
    Patent number: 5830837
    Abstract: A variant of a parent .alpha.-amylase enzyme having an improved washing and/or dishwashing performance as compared to the parent enzyme, wherein one or more amino acid residues of the parent enzyme have been replaced by a different amino acid residue and/or wherein one or more amino acid residues of the parent .alpha.-amylase have been deleted and/or wherein one or more amino acid residues have been added to the parent .alpha.-amylase enzyme, provided that the variant is different from one in which the methionine residue in position 197 of a parent B. licheniformis .alpha.-amylase has been replaced by alanine or threonine, as the only modification being made. The variant may be used for washing and dishwashing.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: November 3, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Henrik Bisg.ang.rd-Frantzen, Torben Vedel Borchert, Allan Svendsen, Marianne Thellersen, Pia Van der Zee
  • Alkaline bacilus amylase
    Patent number: 5824531
    Abstract: An .alpha.-amylase characterized by having a specific activity at least 25% higher than the specific activity of Termamyl.RTM. at a temperature in the range of 25.degree. C. to 55.degree. C. and a pH value in the range of pH 8 to pH 10.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: October 20, 1998
    Assignee: Novid Nordisk
    Inventors: Helle Outtrup, Henrik Bisg.ang.rd-Frantzen, Peter Rahbek stergaard, Michael Dolberg Rasmussen, Pia Van der Zee
  • Amylase variants
    Patent number: 5801043
    Abstract: A variant of a parent .alpha.-amylase enzyme having an improved washing and/or dishwashing performance as compared to the parent enzyme, wherein one or more amino acid residues of the parent enzyme have been replaced by a different amino acid residue and/or wherein one or more amino acid residues of the parent .alpha.-amylase have been deleted and/or wherein one or more amino acid residues have been added to the parent .alpha.-amylase enzyme, provided that the variant is different from one in which the methionine residue in position 197 of a parent B. licheniformis .alpha.-amylase has been replaced by alanine or threonine, as the only modification being made. The variant may be used for washing and dishwashing.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: September 1, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Henrik Bisg.ang.rd-Frantzen, Torben Vedel Borchert, Allan Svendsen, Marianne Thellersen, Pia Van der Zee
  • Amylase variants
    Patent number: 5753460
    Abstract: A variant of a parent .alpha.-amylase enzyme having an improved washing and/or dishwashing performance as compared to the parent enzyme, wherein one or more amino acid residues of the parent enzyme have been replaced by a different amino acid residue and/or wherein one or more amino acid residues of the parent .alpha.-amylase have been deleted and/or wherein one or more amino acid residues have been added to the parent .alpha.-amylase enzyme, provided that the variant is different from one in which the methionine residue in position 197 of a parent B. licheniformis .alpha.-amylase has been replaced by alanine or threonine, as the only modification being made. The variant may be used for washing and dishwashing.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: May 19, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Henrik Bisgard-Frantzen, Torben Vedel Borchert, Allan Svendsen, Marianne Thellersen, Pia Van der Zee