Patents by Inventor Maciej Walesiak

Maciej Walesiak 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).

  • Presence and absence detection
    Patent number: 11928846
    Abstract: A method is provided for detecting presence and absence of a creature. The method includes, receiving an input signal from a radiation sensor; applying a first low-pass filter to the received input signal with a first time constant and generating a first filter output; applying a second low-pass filter to the received input signal with a second time constant and generating a second filter output. The method also includes determining a presence of a creature by comparing a slope of the first filter output to a predetermined value; and determining an absence of the creature based on further processing. A corresponding device for detecting presence and absence of a creature is also provided.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 12, 2024
    Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
    Inventors: Daniel Lindstedt, Maria Zevgren Sundberg, Annie Thorburn, Maciej Walesiak
  • PRESENCE AND ABSENCE DETECTION
    Publication number: 20210209790
    Abstract: A method is provided for detecting presence and absence of a creature. The method includes, receiving an input signal from a radiation sensor; applying a first low-pass filter to the received input signal with a first time constant and generating a first filter output; applying a second low-pass filter to the received input signal with a second time constant and generating a second filter output. The method also includes determining a presence of a creature by comparing a slope of the first filter output to a predetermined value; and determining an absence of the creature based on further processing. A corresponding device for detecting presence and absence of a creature is also provided.
    Type: Application
    Filed: May 18, 2018
    Publication date: July 8, 2021
    Inventors: Daniel Lindstedt, Maria Zevgren Sundberg, Annie Thorburn, Maciej Walesiak