Patents by Inventor Denis M. Poirier

Denis M. Poirier 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).

  • Self-calibrating corrosion measurement field device with improved signal measurement and excitation circuitry
    Patent number: 7265559
    Abstract: Low power corrosion measurement devices are described with improved signal measurement and excitation circuitry in a field transmitter for online corrosion monitoring or off-line corrosion data logging.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: September 4, 2007
    Assignee: Pepperl + Fuchs
    Inventors: Karel Hladky, Denis M. Poirier
  • Intrinsically safe corrosion measurement and history logging field device
    Patent number: 7245132
    Abstract: Corrosion measurement devices are described with electrical isolation and intrinsic safety barriers advanced corrosion measurement in a field transmitter for online corrosion monitoring or off-line corrosion data logging.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: July 17, 2007
    Assignee: Pepperl & Fuchs, Inc.
    Inventors: Denis M. Poirier, Roolf Wessels
  • Configurable corrosion measurement field device
    Patent number: 7239156
    Abstract: Low power corrosion measurement devices are described with programmable configuration for implementing one or more advanced corrosion measurement types to provide conductivity, general corrosion, and/or localized corrosion values in a field transmitter for online corrosion monitoring or off-line corrosion data logging.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: July 3, 2007
    Assignee: Pepperl & Fuchs, Inc.
    Inventors: Karel Hladky, Denis M. Poirier
  • Power conditioners and pseudo isolation for a two-wire processing network
    Patent number: 7064624
    Abstract: An isolator, such as a common-mode-reactor, and power-conditioner network is utilized to provide at least one of adequate segment impedance, cross-talk or adequate high-frequency-interference attenuation on, or between, participating segments. The participating segments comprise adequate power conditioning, and are supplied by an isolated or non-isolated common power supply. At least one of the segments may have one of two poles in resistive and/or capacitive and/or inductive contact to ground, as well as having one of the segments, in resistive and/or capacitive and/or inductive contact to another of one of two poles of other segments.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: June 20, 2006
    Assignee: Pepperl+Fuchs, Inc.
    Inventors: Denis M. Poirier, Steffen Graber
  • Enhanced automatic line build out
    Patent number: 4785265
    Abstract: A line build out comprises a control voltage mechanism for applying a control voltage to a tuning diode or varactor. The control voltage is generated so as to be indicative of the length of a cable over which the signal has traveled. The capacitance of the tuning diode or varactor is changed according to the control voltage. A resistor is connected to the cathode of the tuning diode or varactor and a capacitor is connected to the anode of the tuning diode or varactor. A signal can be measured at the cathode which corresponds to the incoming signal and has been attenuated by frequency roll-off in accordance with the length of the cable over which the signal has traveled. In this way, attenuation for signals over cables of various length can be equalized in a manner which not only takes into account the length of the cable, but also the frequency of the signal.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: November 15, 1988
    Assignee: The Babcock & Wilcox Company
    Inventors: Ramon Molnar, Denis M. Poirier