Patents by Inventor Jan Leendert Stolk

Jan Leendert Stolk 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).

  • Apparatus and method for storage tank hatch monitoring in an inventory management system
    Patent number: 8159358
    Abstract: A method includes receiving information associated with a level of material in a tank, where the tank has a hatch. The method also includes determining whether the level of material in the tank experiences a specified variation within a critical zone associated with the hatch. The specified variation is indicative of the hatch being open while the tank is being filled. In addition, the method includes generating an alarm when the level of material in the tank experiences the specified variation. Determining whether the level of material in the tank experiences the specified variation could be based on an entrance level speed of the material, which identifies a rate at which the level of material in the tank is increasing when the material level crosses a lower bound of the critical zone. Also, no alarms could be generated when the level of material in the tank is outside the critical zone.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: April 17, 2012
    Assignee: Enraf B.V.
    Inventors: Adrianus Leonardus David van Schie, Jan Leendert Stolk
  • APPARATUS AND METHOD FOR STORAGE TANK HATCH MONITORING IN AN INVENTORY MANAGEMENT SYSTEM
    Publication number: 20090277374
    Abstract: A method includes receiving information associated with a level of material in a tank, where the tank has a hatch. The method also includes determining whether the level of material in the tank experiences a specified variation within a critical zone associated with the hatch. The specified variation is indicative of the hatch being open while the tank is being filled. In addition, the method includes generating an alarm when the level of material in the tank experiences the specified variation. Determining whether the level of material in the tank experiences the specified variation could be based on an entrance level speed of the material, which identifies a rate at which the level of material in the tank is increasing when the material level crosses a lower bound of the critical zone. Also, no alarms could be generated when the level of material in the tank is outside the critical zone.
    Type: Application
    Filed: May 12, 2008
    Publication date: November 12, 2009
    Applicant: Honeywell International Inc.
    Inventors: Adrianus Leonardus David van Schie, Jan Leendert Stolk