Patents by Inventor Donald John Delehanty

Donald John Delehanty 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).

  • Etching composition and use thereof
    Patent number: 5780363
    Abstract: An aqueous etchant composition containing about 0.01 to about 15 percent by weight of sulfuric acid and about 0.01 to about 20 percent by weight of hydrogen peroxide or about 1 to 30 ppm of ozone is effective in removing polymer residue from a substrate, and especially from an integrated circuit chip having aluminum lines thereon.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: July 14, 1998
    Assignee: International Business Machines Coporation
    Inventors: Donald John Delehanty, Rangarajan Jagannathan, Kenneth John McCullough, Donna Diane Miura, George F. Ouimet, Jr., David Lee Rath, Bryan Newton Rhoads, Frank John Schmidt, Jr.