Patents by Inventor Stevan Backa

Stevan Backa 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).

  • Active acoustic method for predicting properties of process fluids comprising solid particles or gas/liquid volumes based on their size distribution and concentration
    Patent number: 9772311
    Abstract: In the present invention a controllable acoustic source (14) in connection with the process fluid (10) emits a signal (18) into the fluid (10), consisting of a suspension of particles (12), being volumes of gas, liquid or solid phase. The controllable acoustic signal (18) is allowed to interact, with the particles (12), and the acoustic (pressure) signals (22) resulting from such an interaction is measured preferably via a sensor (24). A spectrum is measured. The spectrum is used to predict properties, content and/or size of the particles (12) and/or used to control a process in which the process fluid (10) participates. The prediction is performed in the view of the control of the acoustic source (14). The used acoustic signal has preferably a frequency below 20 kHz.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: September 26, 2017
    Assignee: ACOSENSE AB
    Inventors: Thomas Liljenberg, Stevan Backa, Lennart Thegel, Mats Åbom
  • ACTIVE ACOUSTIC SPECTROSCOPY
    Publication number: 20150059442
    Abstract: In the present invention a controllable acoustic source (14) in connection with the process fluid (10) emits a signal (18) into the fluid (10), consisting of a suspension of particles (12), being volumes of gas, liquid or solid phase. The controllable acoustic signal (18) is allowed to interact, with the particles (12), and the acoustic (pressure) signals (22) resulting from such an interaction is measured preferably via a sensor (24). A spectrum is measured. The spectrum is used to predict properties, content and/or size of the particles (12) and/or used to control a process in which the process fluid (10) participates. The prediction is performed in the view of the control of the acoustic source (14). The used acoustic signal has preferably a frequency below 20 kHz.
    Type: Application
    Filed: October 27, 2014
    Publication date: March 5, 2015
    Applicant: ACOSENSE AB
    Inventors: Thomas Liljenberg, Stevan Backa, Lennart Thegel, Mats Åbom