Patents by Inventor Maria L. S. Wee

Maria L. S. Wee 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 dishwasher detergent
    Patent number: 4199467
    Abstract: Alkaline dishwasher detergent composition having a specific critical pH; a specific mixture of alkali metal silicates for corrosion prevention, improved spotting and filming, and improved processing and physical characteristics; and having a relatively high level of surfactant. The detergent composition is substantially free of highly alkaline materials and organic builders.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: April 22, 1980
    Assignee: The Procter & Gamble Company
    Inventors: Gerald W. Novosel, Lawrence A. Gilbert, Maria L. S. Wee, Frank J. Mueller