Patents by Inventor William L. Lucas, Sr.

William L. Lucas, Sr. 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 and apparatus for controlling the supply of energy to a heating load in a smoking article
    Patent number: 5372148
    Abstract: A method and an apparatus for controlling energy flow into a heating load array of a smoking article are provided. In response to a pressure drop in the mouthpiece of the smoking article, a selected load in the heating load array is switchably connected to a power supply. Energy delivered to the load is measured and the load is disconnected when a predetermined amount of energy has been delivered.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: December 13, 1994
    Assignee: Philip Morris Incorporated
    Inventors: Hugh J. McCafferty, Charles T. Higgins, William L. Lucas, Sr.