Patents by Inventor Wanda Darlene Brewster

Wanda Darlene Brewster 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).

  • Desmear etchant and use thereof
    Patent number: 6454954
    Abstract: Disclosed are methods for replenishing adhesion promoting baths from an unstable state without discarding the bath. Methods of adhesion promoting substrates, such as printed wiring boards, using the replenished baths are also disclosed.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: September 24, 2002
    Assignee: Shipley Company, L.L.C.
    Inventors: Wanda Darlene Brewster, Tuan Hoang Ho