Patents by Inventor Willem Van De Graaf

Willem Van De Graaf 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).

  • Announcing advertisements to users of a telecommunications system
    Patent number: 6567658
    Abstract: A method of and equipment for announcing advertisements to users of a telecommunications system wherein at least one advertisement is stored in electrical form in storage means of communication equipment of a user of the telecommunications system. The or each advertisement is announced to the user from the storage means in aural and/or visual form through loudspeaker and/or display means. The or each announcement is stored from the telecommunications system, advantageously during “off-peak” hours, and is regularly refreshed. The or each advertisement may be announced under control of the telecommunications system or autonomously by the communication equipment of the user.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: May 20, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Willem Van De Graaf