Patents by Inventor Donna J. Haeggberg

Donna J. Haeggberg 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 having bleach system comprising monopersulfate, cationic bleach activator and perborate or percarbonate
    Patent number: 5599781
    Abstract: Detergents, especially automatic dishwashing detergents, comprising a stain removal system especially adapted for removal of tea stains, coffee stains and the like. The compositions comprise monopersulfate bleach such as 2KHSO.sub.5 .cndot.KHSO.sub.4 .cndot.K.sub.2 SO.sub.4 in combination with perborate or percarbonate at specific ratios, in combination with certain cationic or quaternary-substituted bleach activators.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: February 4, 1997
    Inventors: Donna J. Haeggberg, Lucille F. Taylor, Mark R. Sivik, James C. T. R. Burckett-St. Laurent
  • Low-dosage automatic dishwashing detergent with monopersulfate and enzymes
    Patent number: 5559089
    Abstract: Automatic dishwashing detergents are provided in convenient, compact form without chlorine bleaches or phosphate builders. Thus, monopersulfate bleach such as 2KHSO.sub.5.KHSO.sub.4.K.sub.2 SO.sub.4 is used in combination with protease or amylase enzymes and acrylate organic dispersants to provide good cleaning of tableware. Weak builders such as citrate and pH-adjusting agents such as carbonate, bicarbonate and silicate can be present in the composition.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 24, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Frederick A. Hartman, Ronald J. Rice, James C. T. R. Burckett-St. Laurent, Lucille F. Taylor, Donna J. Haeggberg