Patents by Inventor Alicia Dean

Alicia Dean 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).

  • Photoresist stripper
    Patent number: 5091103
    Abstract: Photo resist stripper compositions comprising N-alkyl-2-pyrrolidone, 1,2-propanediol and tetraalkylammonium hydroxide. The photoresist strippers are useful at high stripping temperatures (105.degree. C.-125.degree. C.) to remove hard baked photoresist without damaging semiconductor substrates or metallurgy.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: February 25, 1992
    Inventors: Alicia Dean, John A. Fitzsimmons, Janos Havas, Barry C. McCormick, Prabodh R. Shah