With Rf Input Means Patents (Class 422/186.29)
  • Patent number: 6245126
    Abstract: A method of filtering air includes the steps of providing a filter element, providing a pair of electrodes sandwiching the filter element, applying a DC electrostatic field to the electrodes to produce attracting forces between particulates and micro-organisms contained in the air and the filter element, and intermittently applying a sterilizing electrical field concurrently with the electrostatic field. An RF, DC pulse, or AC power supply can be used to generate the sterilizing electrical field.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: June 12, 2001
    Assignee: Enviromental Elements Corp.
    Inventors: Paul L. Feldman, Dennis J. Helfritch
  • Patent number: 6193878
    Abstract: A multi-modal system for modifying water structure in a solution to continuously affect the hydration forces acting on the constituents in the solution. The system includes a containment vessel defining a treatment environment and including a wall defining a fluid passage and a fluid inlet. The inlet is coupled to the passage to centrifugally direct the solution helically along the wall. At least one electromagnetic energy delivery unit is disposed within the containment vessel. The electromagnetic energy delivery unit is responsive to generate variable electromagnetic energy sufficient to stimulate the solution and affect the hydration forces. Also provided is a controlling unit coupled to the electromagnetic delivery unit to alter the variable electromagnetic energy in response to spectral information about the solution and in accordance with optimal treatment parameters.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: February 27, 2001
    Assignee: ZPM, Inc.
    Inventors: Dwain E. Morse, Thomas G. Matherly, Joe DeWitt, Miroslav Colic
  • Patent number: 6175037
    Abstract: An improved process for preparing acrylate esters, methacrylate esters, polyester acrylates or polyester methacrylates by reacting acrylic or methacrylic acid with a monohydroxy containing compound or a polyhydroxy containing compound in the presence of a catalyst and polymerization inhibitor in a reaction vessel, in the presence or absence of a solvent, under microwave energy as a heating source. Advantages of using microwave energy in place of conventional thermal heating include higher temperatures coupled with shorter residence times, reduced production costs, increased capacity, lower energy costs, effective use of raw materials, and solventless processing which is environmentally friendly.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: January 16, 2001
    Assignee: UCB, S.A.
    Inventor: Harrell Emmett Tweedy