Patents by Inventor Leslie J. Kim

Leslie J. Kim 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).

  • System and method for preventing delivery of unsolicited and undesired electronic messages by key generation and comparison
    Patent number: 8347095
    Abstract: A sending device prepares a key for each electronic message sent by the device by applying an algorithm to specified data in the message and then incorporates the key in the message. A receiving device, upon receipt of an electronic message, locates the incorporated key and the data from which a sending device practicing the invention would have prepared it. The receiving device communicates a confirmation request to the purported sending device which contains the key and the data for its preparation. The sending device receives the confirmation messages and prepares a comparison key by applying the algorithm to the data in the confirmation request. The sending device replies to the confirmation request confirming that the sending device sent the message if the comparison key matches the key in the confirmation request and otherwise responds with a denial.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: January 1, 2013
    Assignee: Message Level, LLC
    Inventors: Brian Cunningham, Leslie J. Kim
  • SYSTEM AND METHOD FOR PREVENTING DELIVERY OF UNSOLICITED AND UNDESIRED ELECTRONIC MESSAGES BY KEY GENERATION AND COMPARISON
    Publication number: 20110088097
    Abstract: A sending device prepares a key for each electronic message sent by the device by applying an algorithm to specified data in the message and then incorporates the key in the message. A receiving device, upon receipt of an electronic message, locates the incorporated key and the data from which a sending device practicing the invention would have prepared it. The receiving device communicates a confirmation request to the purported sending device which contains the key and the data for its preparation. The sending device receives the confirmation messages and prepares a comparison key by applying the algorithm to the data in the confirmation request. The sending device replies to the confirmation request confirming that the sending device sent the message if the comparison key matches the key in the confirmation request and otherwise responds with a denial.
    Type: Application
    Filed: June 17, 2010
    Publication date: April 14, 2011
    Inventors: Brian Cunningham, Leslie J. Kim
  • System and method for preventing delivery of unsolicited and undesired electronic messages by key generation and comparison
    Patent number: 7747860
    Abstract: A sending device prepares a key for each electronic message sent by the device by applying an algorithm to specified data in the message and then incorporates the key in the message. A receiving device, upon receipt of an electronic message, locates the incorporated key and the data from which a sending device practicing the invention would have prepared it. The receiving device communicates a confirmation request to the purported sending device which contains the key and the data for its preparation. The sending device receives the confirmation messages and prepares a comparison key by applying the algorithm to the data in the confirmation request. The sending device replies to the confirmation request confirming that the sending device sent the message if the comparison key matches the key in the confirmation request and otherwise responds with a denial.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: June 29, 2010
    Assignee: Message Level, LLC
    Inventors: Brian Cunningham, Leslie J. Kim