Patents by Inventor Hendrik E. de Jong

Hendrik E. de Jong 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 composition
    Patent number: 4824599
    Abstract: The inclusion of proteases with an isoelectric point of less than 10.0 in a detergent composition which comprises a certain, immunologically defined, class of lipases causes a significantly reduced effect of proteases on lipases in comparison with other proteases. The overall performance of the lipase-containing detergent compositions is substantially less affected by these proteases with a pI of less than 10.0.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: April 25, 1989
    Assignee: Lever Brothers Company
    Inventors: Hendrik E. de Jong, Ton Swarthoff, Johan Haverkamp