Patents by Inventor Scott Pappas

Scott Pappas 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).

  • Publication number: 20080013735
    Abstract: A home location register stores key material related to mobile stations associated with the home location register. A first visited location register associated with a first site in a first zone stores key material related to a first mobile station of the mobile stations associated with the home location register. When the first mobile station roams to a second site in a second zone associated with a second visited location register, the key material related to the first mobile station is encrypted with an interkey, yielding encrypted key material, wherein the interkey is used only by infrastructure system devices other than a mobile station for encrypting at least the key material for transport between at least the first and second zones. The encrypted key material is forwarded to the second visited location register.
    Type: Application
    Filed: July 23, 2007
    Publication date: January 17, 2008
    Applicant: MOTOROLA, INC.
    Inventors: Hans Sowa, Daniel McDonald, David Chater-Lea, Scott Pappas, Jason Johur, Dennis Newkirk, Randy Kremske, Walter Anderson, Glenn Walton
  • Publication number: 20060056635
    Abstract: A communication system comprises a first plurality of remote stations (107, 109, 111) belonging to a first call group (119) having an associated first encryption key and a first encryption mode. A second plurality of remote stations (113, 115) belongs to a second call group (121) having an associated second encryption key and a second encryption mode. A group controller (117) forms a third call group (123) which comprises the first and the second call groups (119, 123) and which has an associated third encryption key. When communicating on the third, combined call group, the first plurality of remote stations (107, 109, 111) use the third encryption key and the first encryption mode whereas the second plurality of remote stations (113, 115) use the third encryption key and the second encryption mode.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 16, 2006
    Inventors: Scott Pappas, Baruh Hason, Chris Kruegel, Kristian Pedersen