Patents by Inventor Robin Y. Wessel

Robin Y. Wessel 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).

  • Method to prevent metered toner gray market leakage
    Patent number: 8066183
    Abstract: A device, such as a printer or copier, identifies the type of module being used. If the type of module requires the device to receive an unlock code, the device prompts for the unlock code (which can be a hash of the serial number of the device). Once the unlock code is received, the device can be used with modules of that type. If the unlock code is not received, the device does not operate with modules of that type.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: November 29, 2011
    Assignee: Xerox Corporation
    Inventors: Leonard Guan, Robin Y. Wessel
  • METHOD TO PREVENT METERED TONER GRAY MARKET LEAKAGE
    Publication number: 20100129090
    Abstract: A device, such as a printer or copier, identifies the type of module being used. If the type of module requires the device to receive an unlock code, the device prompts for the unlock code (which can be a hash of the serial number of the device). Once the unlock code is received, the device can be used with modules of that type. If the unlock code is not received, the device does not operate with modules of that type.
    Type: Application
    Filed: January 28, 2010
    Publication date: May 27, 2010
    Applicant: XEROX CORPORATION
    Inventors: Leonard Guan, Robin Y. Wessel
  • Method to prevent metered toner gray market leakage
    Patent number: 7677448
    Abstract: A device, such as a printer or copier, identifies the type of module being used. If the type of module requires the device to receive an unlock code, the device prompts for the unlock code (which can be a hash of the serial number of the device). Once the unlock code is received, the device can be used with modules of that type. If the unlock code is not received, the device does not operate with modules of that type.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: March 16, 2010
    Assignee: Xerox Corporation
    Inventors: Leonard Guan, Robin Y. Wessel