Patents by Inventor Ingmar Patrick Hofmann

Ingmar Patrick Hofmann 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).

  • Electronic visitor guidance system
    Patent number: 6418372
    Abstract: A low-cost guidance system for guiding a user to a selected one of multiple locations in a defined area. The system includes a portable device per user and multiple indicators. The portable device includes an infrared transceiver and an input to receive information corresponding to a selected location in the defined area. An indicator includes an indicator infrared transceiver, direction signs, and directional information corresponding to the relative direction in a path from the indicator to each of the locations. The portable device directly communicates the information corresponding to the selected location via the device infrared transceiver to the indicator infrared transceiver of the indicator to cause the indicator to access the directional information and activate the appropriate direction sign to guide the user toward the selected location.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: July 9, 2002
    Assignee: Siemens Technology-To-Business Center, LLC
    Inventor: Ingmar Patrick Hofmann