Patents by Inventor Hidde Frankena

Hidde Frankena 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).

  • Automatic dishwashing detergent comprising quaternary ammonium salt
    Patent number: 4931217
    Abstract: Machine dishwashing compositions comprising quaternary ammonium salts of formula: ##STR1## wherein from one to three members of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent alkyl chains which may be the same or different, at least one of said alkyl groups representing a C.sub.8 -C.sub.26 group, those members of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which do not represent alkyl groups representing ethoxy groups, the total ethoxylation value within the molecule being at least 5 and X.sup.- representing an anion, enable washing to be carried out efficiently at lower temperatures. Fat removal is enhanced.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: June 5, 1990
    Assignee: Lever Brothers Company
    Inventor: Hidde Frankena