Patents by Inventor Cornelis A. Lagerwaard

Cornelis A. Lagerwaard 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).

  • Enzymatic detergent and bleaching composition containing a specific rDNA technique cloned lipase
    Patent number: 5069809
    Abstract: An enzymatic detergent and bleaching composition contains a bleaching system which is stronger than the sodium perborate/TAED system. In such a composition a lipase is employed which is produced by cloning, by rDNA technique, the gene which encodes the lipase produced by the fungas Humicola lanuginosa and expressing that gene in Aspergillus oryzae as host. The lipase is used in an amount giving a lipolytic enzyme activity of from 100 to 0.005 lipolytic units/mg of the composition.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: December 3, 1991
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Cornelis A. Lagerwaard, Johannes M. Cornelissen, Ton Swarthoff, Jan Klugkist, David Thom
  • Enzymatic detergent and bleaching composition
    Patent number: 4861509
    Abstract: The invention relates to the use of a certain class of lipases together with strong bleaching agents in detergent compositions. This class of lipases consists of fungal lipases ex Humicola lanuginosa or Thermomyces lanuginosus, and bacterial lipases which show a positive immunological cross-reaction with the antibody of the lipase produced by Chromobacter viscosum var. lipolyticum NRRL B-3673. The strong bleaching agents are stronger than the sodium perborate/TAED system, i.e. stronger than peracetic acid or they yield, on perhydrolysis, a peracid faster than the sodium perborate/TAED system.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: August 29, 1989
    Assignee: Lever Brothers Company
    Inventors: Johannes M. Cornelissen, Jan Klugkist, Cornelis A. Lagerwaard, Swarthoff Ton, David Thom, David Thom
  • Enzymatic detergent and bleaching composition
    Patent number: 4769173
    Abstract: The invention relates to the use of a certain class of lipases together with strong bleaching agents in detergent compositions. This class of lipases consists of fungal lipases ex Humicola lanuginosa or Thermomyces lanuginosus, and bacterial lipases which show a positive immunological cross-reaction with the antibody of the lipase produced by Chromobacter viscosum var. lipolyticum NRRL B-3673. The strong bleaching agents are stronger than the sodium perborate/TAED system, i.e. stronger than peracetic acid or they yield, on perhydrolysis, a peracid faster than the sodium perborate/TAED system.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: September 6, 1988
    Assignee: Lever Brothers Company
    Inventors: Johannes M. Cornelissen, Jan Klugkist, Cornelis A. Lagerwaard, Ton Swarthoff, David Thom
  • Low temperature bleaching detergent compositions comprising peracids and persalt activator
    Patent number: 4547305
    Abstract: Detergent compositions, particularly low temperature bleach detergent compositions comprising an inorganic persalt and an organic peracid precursor (persalt activator) or an organic peracid in lieu thereof, containing less than 10 mg/kg, preferably not more than 5 mg/kg of reactive titanium (IV), based on the total weight of the composition, are disclosed. These compositions show improved peracid stability, thereby improving the peracid concentration during the washing and cleaning operation to give enhanced bleaching results. The detergent compositions preferably contain a silicate.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: October 15, 1985
    Assignee: Lever Brothers Company
    Inventors: Johannes M. Cornelissen, Cornelis A. Lagerwaard, Rudolf J. Martens