Patents Represented by Attorney, Agent or Law Firm Doepken Keevican & Weiss
  • Patent number: 6206292
    Abstract: RFID transponders having a polymer film as the support for at least one antenna and having a circuit chip electrically connected thereto, possessing on one surface of the polymer film a printable/writable layer comprising particulate pigment and film forming binder and on the opposite surface of the polymer film an adhesive layer covered with a cover layer. The directly printable RFID transponders are useful as labels, especially pressure-sensitive adhesive labels or tags for labelling goods for transportation, containers or textiles, or else with indetachable cover as identification cards or access authorization cards.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: March 27, 2001
    Assignee: Sihl GmbH
    Inventors: Bernd Robertz, Ralf Liebler
  • Patent number: 6128174
    Abstract: A method and apparatus for ramping current in an electromagnet in which a coil is used to generate the magnetic field provides rapid changes in the generated magnetic field. The method allows a change in current in the coil to be accomplished more rapidly than by applying a step change in voltage, when superconducting coils subject to quenching are used or when nonsuperconducting coils subject to other physical limitations are used. The method requires that both the current I(t) through the coil and the first derivative of the current vary with respect to time t during the ramping period, so that magnitude of the derivative of the current is higher when the magnitude of applied current is lower, lower when the magnitude of the applied current is higher. One variation of this method supplies (or removes) a constant amount of power from the magnetic field of the magnet, while another variation compensates for both self-generated eddy current losses and self-generated high field effects.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: October 3, 2000
    Assignee: Stereotaxis, Inc.
    Inventors: Rogers C. Ritter, Peter R. Werp, Michael A. Lawson
  • Patent number: 6113870
    Abstract: Process and apparatus which increase the concentration of NO.sub.x in an off-gas stream of heated air carrying NO.sub.x removed or desorbed from sorbent, feed the off-gas stream into NO.sub.x reduction apparatus, or to nitrogen by-product producing apparatus, and maintain the volume of the off-gas stream substantially constant as the NO.sub.x concentration is being increased.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: September 5, 2000
    Assignee: Noxso Corporation
    Inventors: John Leo Haslbeck, Warren Tzu Ma, James Brown Black, III
  • Patent number: 6114790
    Abstract: An electric motor comprising a stator having sixteen or thirty two slots and three windings asymmetrically arranged in the slots to achieve a substantially balanced three-phase operation.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: September 5, 2000
    Assignee: Emerson Electric Co.
    Inventor: Renyan W. Fei
  • Patent number: 5997823
    Abstract: Processes and apparatus for removing acid gases from hot flue gases utilizing a slurry consisting of water, calcium chloride and at least one absorbing agent selected from a group consisting of calcium oxides, magnesium oxides, calcium hydroxides, magnesium hydroxides, alkali metal oxides, alkali metal hydroxides, and alkali metal carbonates, introducing the slurry into the rising stream of hot flue gas to absorb the acid gas into the water and thereafter to react the absorbed acid gas with the absorption agent and thereafter to evaporate the water to produce dry solids comprising reaction products and unreacted absorption agents suspended in the flue gas. The calcium chloride reduces the water vapor pressure of the slurry to reduce the rate at which the water evaporates so as to increase the rate at which the acid gas is absorbed into the water before the water evaporates.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: December 7, 1999
    Assignee: Noxso Corporation
    Inventor: John L. Haslbeck