Patents by Inventor Tadeusz Walczak

Tadeusz Walczak 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).

  • Methodology for determining oxygen in biological systems
    Patent number: 5833601
    Abstract: The invention provides apparatus and methods for measuring oxygen tensions in biological systems utilizing physiologically acceptable paramagnetic material, such as India ink or carbon black, and electron paramagnetic resonance (EPR) oximetry. India ink is introduced to the biological system and exposed to a magnetic field and an electromagnetic field in the 1-2 GHz range. The EPR spectra is then measured at the biological system to determine oxygen concentration. The EPR spectra is determined by an EPR spectrometer that adjusts the resonator to a single resonator frequency to compensate for movements of the biological system, such as a human or animal. The biological system can also include other in vivo tissues, cells, and cell cultures to directly measure pO.sub.2 non-destructively.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: November 10, 1998
    Assignee: Trustees of Dartmouth College
    Inventors: Harold M. Swartz, Fuminori Goda, Tadeusz Walczak, Ke Jian Liu
  • Apparatus and methodology for determining oxygen tension in biological systems
    Patent number: 5706805
    Abstract: The invention provides apparatus and methods for measuring oxygen tensions in biological systems utilizing physiologically acceptable paramagnetic material, such as India ink or carbon black, and electron paramagnetic resonance (EPR) oximetry. India ink is introduced to the biological system and exposed to a magnetic field and an electromagnetic field in the 1-2 GHz range. The EPR spectra is then measured at the biological system to determine oxygen concentration. The EPR spectra is determined by an EPR spectrometer that adjusts the resonator to a single resonator frequency to compensate for movements of the biological system, such as a human or animal. The biological system can also include other in vivo tissues, cells, and cell cultures to directly measure pO.sub.2 non-destructively. The paramagnetic material can be used non-invasively or invasively depending on the goals of the pO2 measurement.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 13, 1998
    Assignee: Trustees of Dartmouth College
    Inventors: Harold M. Swartz, Fuminori Goda, Tadeusz Walczak, Ke Jian Liu, Karsten Mader
  • Apparatus and methodology for determining oxygen in biological systems
    Patent number: 5494030
    Abstract: The invention provides apparatus and methods for measuring oxygen tensions in biological systems utilizing physiologically acceptable paramagnetic material, such as India ink or carbon black, and electron paramagnetic resonance (EPR) oximetry. India ink is introduced to the biological system and exposed to a magnetic field and an electromagnetic field in the 1-2 GHz range. The EPR spectra is then measured at the biological system to determine oxygen concentration. The EPR spectra is determined by an EPR spectrometer that adjusts the resonator to a single resonator frequency to compensate for movements of the biological system, such as a human or animal. The biological system can also include other in vivo tissues, cells, and cell cultures to directly measure pO.sub.2 non-destructively.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: February 27, 1996
    Assignee: Trustees of Dartmouth College
    Inventors: Harold M. Swartz, Fuminori Goda, Tadeusz Walczak, Ke J. Liu