Patents by Inventor John L. Meek

John L. Meek 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).

  • Stirring hot plate
    Patent number: 7919731
    Abstract: A stirring hot plate for simultaneously heating and stirring a mixture includes a phase controlled motor that spins magnets which couple to, and thereby spin, a stir bar within the mixture. In addition to spinning the magnets, the motor includes an operational mode in which the motor is rapidly braked thereby quickly spinning down the stir bar. The stirring hot plate also includes a visual indicator to the user that the platform is hot-to-the-touch that is especially effective when the stirring hot plate is not in use.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 5, 2011
    Assignee: Barnstead/Thermolyne Corporation
    Inventors: Curt McFadden, Kenneth David Hermsen, Roger W. Earle, James R. Edwards, Kerry W. Leppert, Eric Jackson, Eric Garz, Mark Lockwood, John L. Meek
  • Stirring hot plate
    Patent number: 7075040
    Abstract: A stirring hot plate for simultaneously heating and stirring a mixture includes a phase controlled motor that spins magnets which couple to, and thereby spin, a stir bar within the mixture. In addition to spinning the magnets, the motor includes an operational mode in which the motor is rapidly braked thereby quickly spinning down the stir bar. The stirring hot plate also includes a visual indicator to the user that the platform is hot-to-the-touch that is especially effective when the stirring hot plate is not in use.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: July 11, 2006
    Assignee: Barnstead/Thermolyne Corporation
    Inventors: Curt McFadden, Kenneth David Hermsen, Roger W. Earle, James Edwards, Kerry W. Leppert, Eric Jackson, Eric Garz, Mark Lockwood, John L. Meek