Patents by Inventor Joel Patrick Mitchell

Joel Patrick Mitchell 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).

  • Process for forming a semiconductor device
    Patent number: 5960306
    Abstract: A process for dry etching a passivation layer (42) of a semiconductor device is performed such that a low radio frequency (RF) power step is used when an underlying bond pad (22) is initially exposed and a high RF power step is used after the initial exposure. The process virtually eliminates or reduces the likelihood of bond pad (22) staining, particularly when a polyimide die coat layer (72) is subsequently formed over the semiconductor device (50).
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: September 28, 1999
    Assignee: Motorola, Inc.
    Inventors: Mark D. Hall, Gregory Steven Ferguson, Joel Patrick Mitchell, Johanes P. D. Suryanata