Patents by Inventor Benjamin S. Crowe

Benjamin S. Crowe 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).

  • Method and apparatus for high resolution analysis
    Patent number: 5368391
    Abstract: The present invention relates to analytical methods for determining the composition of a material that undergoes a transition as a function of a driving variable. As applied to thermogravimetric analysis (TGA), a first preferred embodiment comprises (1) decreasing the heating rate when deviations from a baseline signal are detected; (2) establishing a minimum heating rate; (3) forcing the heating rate to a predetermined maximum whenever the rate of change of the weight change with respect to the temperature falls below a predetermined value; and (4) adjusting the heating rate according to the rate of change of the weight of the sample to track a predetermined rate of change of the weight of the sample.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: November 29, 1994
    Assignee: TA Instruments, Inc.
    Inventors: Benjamin S. Crowe, Steven R. Sauerbrunn
  • Method and apparatus for modulated differential analysis
    Patent number: 5346306
    Abstract: The present invention relates to differential analytical techniques for determining the composition, phase, structure, identification or other properties of a material that undergoes a transition as function of a driving variable. As applied to differential scanning calorimetric analysis (DSC), the preferred embodiment comprises: (1) heating a sample of the material with a linear temperature ramp that is modulated with a sinusoidal heating rate oscillation; and (2) deconvoluting the resultant heat flow signal into rapidly reversible and non-rapidly reversible components.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: September 13, 1994
    Assignee: TA Instruments, Inc.
    Inventors: Michael Reading, Brian K. Hahn, Benjamin S. Crowe
  • Method and apparatus for modulated differential analysis
    Patent number: 5224775
    Abstract: The present invention relates to differential analytical techniques for determining the composition, phase, structure, identification or other properties of a material that undergoes a transition as function of a driving variable. As applied to differential scanning calorimetric analysis (DSC), the preferred embodiment comprises: (1) heating a sample of the material with a linear temperature ramp that is modulated with a sinusoidal heating rate oscillation; and (2) deconvoluting the resultant heat flow signal into rapidly reversible and non-rapidly reversible components.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: July 6, 1993
    Assignee: TA Instruments, Inc.
    Inventors: Michael Reading, Brian K. Hahn, Benjamin S. Crowe
  • Method and apparatus for high resolution analysis
    Patent number: 5165792
    Abstract: The present invention relates to analytical methods for determining the composition of a material that undergoes a transition as a function of a driving variable. As applied to thermogravimetric analysis (TGA), a first preferred embodiment comprises (1) decreasing the heating rate when deviations from a baseline signal are detected; (2) establishing a minimum heating rate; (3) forcing the heating rate to a predetermined maximum whenever the rate of change of the weight change with respect to the temperature falls below a predetermined value; and (4) adjusting the heating rate according to the rate of change of the weight of the sample to track a predetermined rate of change of the weight of the sample.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: November 24, 1992
    Assignee: TA Instruments, Inc.
    Inventors: Benjamin S. Crowe, Steven R. Sauerbrunn