Patents by Inventor Frederik Zwaal

Frederik Zwaal 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).

  • Session initiation protocol stack optimisation
    Patent number: 10075372
    Abstract: Apparatus comprising a Session Initiation Protocol agent arranged to send and receive Session Initiation Protocol messages to and from peer Session Initiation Protocol agents. The apparatus is configured, for a Session Initiation Protocol message to be sent, to translate one or more header fields of the message into an alternative format and to include the translated field(s) within or prefixed to the message, together with the untranslated field(s).
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: September 11, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Frederik Zwaal, Erik Reitsma
  • SESSION INITIATION PROTOCOL STACK OPTIMISATION
    Publication number: 20140369357
    Abstract: Apparatus comprising a Session Initiation Protocol agent arranged to send and receive Session Initiation Protocol messages to and from peer Session Initiation Protocol agents. The apparatus is configured, for a Session Initiation Protocol message to be sent, to translate one or more header fields of the message into an alternative format and to include the translated field(s) within or prefixed to the message, together with the untranslated field(s).
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Inventors: Frederik Zwaal, Erik Reitsma
  • Session Initiation Protocol Stack Optimisation
    Publication number: 20110016185
    Abstract: Apparatus comprising a Session Initiation Protocol agent (9) arranged to send and receive Session Initiation Protocol messages to and from peer Session Initiation Protocol agents. The apparatus is configured, for a Session Initiation Protocol message to be sent, to translate (10) one or more header fields of the message into an alternative format and to include (11) the translated field(s) within or prefixed to the message, together with the untranslated field(s).
    Type: Application
    Filed: December 17, 2007
    Publication date: January 20, 2011
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Frederik Zwaal, Erik Reitsma