Patents by Inventor RaeAnn M. Auel

RaeAnn M. Auel 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).

  • Electrochemical cell
    Patent number: 4859305
    Abstract: The present invention is for an electrochemical cell and method for quantitatively detecting noxious gas which comprises a first working electrode comprising a gas diffusion membrane having bonded thereto a catalytic portion electrochemically reactive with the noxious gas; a second working electrode having electrochemical activity with the oxidation/reduction products produced at the first working electrode; a counter electrode; a reference electrode; an electrolyte; means for containing said electrolyte and said electrodes; means for maintaining a fixed potential on said first working electrode relative to said reference electrode of from about 1.0 to 1.8 volts with respect to the potential of the reversible hydrogen couple of the electrolyte of the cell; and means for maintaining a fixed potential on said second working electrode relative to said reference electrode of from about 1.0 to 2.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: August 22, 1989
    Assignee: Mine Safety Appliances Company
    Inventors: Alan A. Schneider, David A. Stewart, Joseph D. Jolson, RaeAnn M. Auel, John F. Price
  • Method for the detection of noxious gases
    Patent number: 4797180
    Abstract: The present invention is for an electrochemical cell and method for quantitatively detecting noxious gas which comprises a first working electrode comprising a gas diffusion membrane having bonded thereto a catalytic portion electrochemically reactive with the noxious gas; a second working electrode having electrochemical activity with the oxidation/reduction products produced at the first working electrode; a counter electrode; a reference electrode; an electrolyte; means for containing said electrolyte and said electrodes; means for maintaining a fixed potential on said first working electrode relative to said reference electrode of from about 1.0 to 1.8 volts with respect to the potential of the reversible hydrogen couple of the electrolyte of the cell; and means for maintaining a fixed potential on said second working electrode relative to said reference electrode of from about 1.0 to 2.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: January 10, 1989
    Assignee: Mine Safety Appliances Company
    Inventors: Alan A. Schneider, David A. Stewart, Joseph D. Jolson, RaeAnn M. Auel, John F. Price
  • Electrochemical gas sensor
    Patent number: 4790925
    Abstract: Electrochemical sensor cells having reduced zero current temperature sensitivity comprise a working electrode and a counter electrode in close proximity and in contact with an electrolyte. Both electrodes are exposed to the atmosphere to be tested and at least a portion of the counter electrode is masked from the electrochemically active gas in the atmosphere.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: December 13, 1988
    Assignee: Mine Safety Appliances Company
    Inventors: Barbara C. Miller, RaeAnn M. Auel, Alan A. Schneider
  • Electrochemical cell for the detection of noxious gases
    Patent number: 4707242
    Abstract: The present invention is for an electrochemical cell and method for quantitatively detecting noxious gas which comprises a first working electrode comprising a gas diffusion membrane having bonded thereto a catalytic portion electrochemically reactive with the noxious gas; a second working electrode having electrochemical activity with the oxidation/reduction products produced at the first working electrode; a counter electrode; a reference electrode; an electrolyte; means for containing said electrolyte and said electrodes; means for maintaining a fixed potential on said first working electrode relative to said reference electrode of from about 1.0 to 1.8 volts with respect to the potential of the reversible hydrogen couple of the electrolyte of the cell; and means for maintaining a fixed potential on said second working electrode relative to said reference electrode of from about 1.0 to 2.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: November 17, 1987
    Assignee: Mine Safety Appliances Company
    Inventors: Alan A. Schneider, David A. Stewart, Joseph D. Jolson, RaeAnn M. Auel, John F. Price
  • Electrochemical determination of formaldehyde
    Patent number: 4692220
    Abstract: Formaldehyde is determined by electrochemical oxidation of formaldehyde at an iridium electrode while maintaining the electrode at a fixed potential and measuring the current flowing through the electrode.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: September 8, 1987
    Assignee: Mine Safety Appliances Company
    Inventors: RaeAnn M. Auel, Joseph D. Jolson, David A. Stewart