Patents by Inventor Daw J. Derek

Daw J. Derek 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).

  • System and method of evaluating or calibrating a bubble detector
    Patent number: 7013703
    Abstract: A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: March 21, 2006
    Assignee: TherOx, Inc.
    Inventors: Daw J. Derek, Jeffrey L. Creech, William R. Patterson
  • Bubble detector and method of evaluation or calibration thereof
    Patent number: 6843099
    Abstract: A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: January 18, 2005
    Assignee: TherOx, Inc.
    Inventors: Daw J. Derek, Jeffrey L. Creech, William R. Patterson
  • Method for enriching a bodily fluid with a gas
    Publication number: 20040019319
    Abstract: A system utilizes an oxygenation device to generate a gas-enriched physiologic fluid and to combine it with a bodily fluid to create a gas-enriched bodily fluid. The oxygenation device may take the form of a disposable cartridge, which is placed within an enclosure. An electronic controller manages various aspects of the system, such as the production of gas-enriched fluids, flow rates, bubble detection, and automatic operation and shut down.
    Type: Application
    Filed: October 24, 2002
    Publication date: January 29, 2004
    Inventors: Daw J. Derek, William R. Patterson, Stephen E. Myrick, Jeffrey L. Creech, Vincent Divino, Gregory P. Watson, Paul J. Zalesky
  • Bubble detector and method of use thereof
    Patent number: 6622542
    Abstract: A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: September 23, 2003
    Assignee: TherOx, Inc.
    Inventors: Daw J. Derek, Jeffrey L. Creech, William R. Patterson
  • System for enriching a bodily fluid with a gas
    Patent number: 6582387
    Abstract: A system utilizes an oxygenation device to generate a gas-enriched physiologic fluid and to combine it with a bodily fluid to create a gas-enriched bodily fluid. The oxygenation device may take the form of a disposable cartridge, which is placed within an enclosure. An electronic controller manages various aspects of the system, such as the production of gas-enriched fluids, flow rates, bubble detection, and automatic operation and shut down.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: June 24, 2003
    Assignee: TherOx, Inc.
    Inventors: Daw J. Derek, William R. Patterson, Stephen E. Myrick, Jeffrey L. Creech, Vincent Divino, Jr., Gregory P. Watson, Paul J. Zalesky
  • System for enriching a bodily fluid with a gas
    Publication number: 20020138034
    Abstract: A system utilizes an oxygenation device to generate a gas-enriched physiologic fluid and to combine it with a bodily fluid to create a gas-enriched bodily fluid. The oxygenation device may take the form of a disposable cartridge, which is placed within an enclosure. An electronic controller manages various aspects of the system, such as the production of gas-enriched fluids, flow rates, bubble detection, and automatic operation and shut down.
    Type: Application
    Filed: March 20, 2001
    Publication date: September 26, 2002
    Inventors: Daw J. Derek, William R. Patterson, Stephen E. Myrick, Jeffrey L. Creech, Vincent Divino, Gregory P. Watson, Paul J. Zalesky
  • Bubble detector and method of evaluation or calibration thereof
    Publication number: 20020134134
    Abstract: A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.
    Type: Application
    Filed: March 20, 2001
    Publication date: September 26, 2002
    Inventors: Daw J. Derek, Jeffrey L. Creech, William R. Patterson