Patents by Inventor Kristine Marie Graham

Kristine Marie Graham 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).

  • Air filter assembly for low temperature catalytic processes
    Patent number: 7758674
    Abstract: An air filter assembly for removing particulate contaminants, chemical contaminants, or both, from an incoming dirty air stream. The resulting filtered or clean air is supplied to catalytic equipment, such as a fuel cell. The filter assembly can include a physical filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: July 20, 2010
    Assignee: Donaldson Company, Inc.
    Inventors: Andrew J. Dallas, Mark A. Gogins, Kristine Marie Graham, Daniel Adamek, Robert Skuster
  • Air filter assembly for low temperature catalytic processes
    Patent number: 7101419
    Abstract: An air filter assembly for removing particulate contaminants, chemical contaminants, or both, from an incoming dirty air stream. The resulting filtered or clean air is supplied to catalytic equipment, such as a fuel cell. The filter assembly can include a physical filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: September 5, 2006
    Assignee: Donaldson Company, Inc.
    Inventors: Andrew James Dallas, Mark Alan Gogins, Kristine Marie Graham, Daniel Adamek, Robert Skuster
  • Air filter assembly for low temperature catalytic processes
    Patent number: 6638339
    Abstract: An air filter assembly for removing particulate contaminants, chemical contaminants, or both, from an incoming dirty air stream. The resulting filtered or clean air is supplied to catalytic equipment, such as a fuel cell. The filter assembly can include a physical filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: October 28, 2003
    Assignee: Donaldson Company, Inc.
    Inventors: Andrew James Dallas, Mark Alan Gogins, Kristine Marie Graham, Daniel Adamek, Robert Skuster
  • Air filter assembly for low temperature catalytic processes
    Publication number: 20020189457
    Abstract: An air filter assembly for removing particulate contaminants, chemical contaminants, or both, from an incoming dirty air stream. The resulting filtered or clean air is supplied to catalytic equipment, such as a fuel cell. The filter assembly can include a physical filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
    Type: Application
    Filed: August 12, 2002
    Publication date: December 19, 2002
    Applicant: Donaldson Company, Inc.
    Inventors: Andrew James Dallas, Mark Alan Gogins, Kristine Marie Graham, Daniel Adamek, Robert Skuster
  • Air filter assembly for low temperature catalytic processes
    Patent number: 6432177
    Abstract: An air filter assembly for removing particulate contaminants, chemical contaminants, or both, from an incoming dirty air stream. The resulting filtered or clean air is supplied to catalytic equipment, such as a fuel cell. The filter assembly can include a physical filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: August 13, 2002
    Assignee: Donaldson Company, Inc.
    Inventors: Andrew James Dallas, Mark Alan Gogins, Kristine Marie Graham, Daniel Adamek, Robert Skuster
  • Airborne contaminant indicator
    Patent number: 6187596
    Abstract: An indicator system provides a visual indication of the cumulative level of an airborne contaminant. The indicator is a transparent sheath with support medium having an acidic surface and treated with a color pH indicator. As a basic contaminant is adsorbed by the medium, the medium color changes. As additional contaminant is adsorbed, the color front progresses the length of the indicator. The indicator system may be used with an adsorptive filter system to predict the life of adsorption bed assemblies. A sample flow is taken upstream of the adsorption beds and is passed through the indicator. Preferably, the flow rate is calibrated so that the rate of the color change in the indicator is proportional to the rate of depletion of the adsorption bed. By monitoring the indicator, an accurate prediction of adsorption bed life may be made.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: February 13, 2001
    Assignee: Donaldson Company, Inc.
    Inventors: Andrew J. Dallas, Kristine Marie Graham, Timothy H. Grafe
  • Airborne contaminant indicator
    Patent number: 5976467
    Abstract: An indicator system provides a visual indication of the cumulative level of an airborne contaminant. An indicator has a transparent sheath with support medium treated with acid and a pH indicator, as the contaminant is adsorbed, the color changes along the medium. The indicator system may be used with an adsorptive filter system to predict the life of adsorption bed assemblies. A sample flow is taken upstream of the adsorption beds and is calibrated with a flow meter and valve. By monitoring the indicator, an accurate prediction of adsorption bed life may be made.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: November 2, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Andrew J. Dallas, Kristine Marie Graham, Timothy H. Grafe