Patents by Inventor Petro Nicolis

Petro Nicolis 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).

  • Respiratory air filter
    Patent number: 7101423
    Abstract: A respiratory filter includes an air-permeable sleeve and at least one filter layer that is arranged in the sleeve and contains activated carbon. The activated carbon contained in the filter layers serves as a gas filter that, by absorption, at least partially removes the noxious gases that are contained in the air inhaled.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: September 5, 2006
    Inventors: Ulrich Lersch, Petro Nicolis
  • Respiratory air filter
    Publication number: 20040144255
    Abstract: A respiratory filter includes an air-permeable sleeve and at least one filter layer that is arranged in the sleeve and contains activated carbon. The activated carbon contained in the filter layers serves as a gas filter that, by absorption, at least partially removes the noxious gases that are contained in the air inhaled.
    Type: Application
    Filed: February 23, 2004
    Publication date: July 29, 2004
    Inventors: Ulrich Lersch, Petro Nicolis