Patents by Inventor Stefan Dahl

Stefan Dahl 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).

  • Security protection for data communication
    Patent number: 8130953
    Abstract: Authentication of an electronic communication apparatus capable of communicating data messages with a server according to a synchronization protocol includes providing an authentication method indicator that specifies an authentication method according to which the authentication is to be executed. The authentication method indicator is incorporated into a message that includes a plurality of authentication capabilities of the communication apparatus. The message is transmitted to the server according to an authentication protocol of the synchronization protocol.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: March 6, 2012
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Carl Gustavsson, Gustaf Lööf, Stefan Andersson, Stefan Dahl
  • Security protection for data communication
    Publication number: 20050147249
    Abstract: Authentication of an electronic communication apparatus capable of communicating data messages with a server according to a synchonization protocol includes providing an authentication method indicator that specifies an authentication method according to which the authentication is to be executed. The authentication method indicator is incorporated into a message that includes a plurality of authentication capabilities of the communication apparatus. The message is transmitted to the server according to an authentication protocol of the synchronization protocol.
    Type: Application
    Filed: February 14, 2003
    Publication date: July 7, 2005
    Inventors: Carl Gustavsson, Gustaf Loof, Stefan Andersson, Stefan Dahl