Patents by Inventor Alan Lorenz Breitenfeldt

Alan Lorenz Breitenfeldt 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).

  • Two stage air filter
    Patent number: 6994743
    Abstract: A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter is mounted within the hood of, for example, a cooking area and operable to receive grease-laden air and remove a portion of the impurities. The air is then sent to a secondary filter, also mounted within the hood, that removes additional impurities. The air is then sent through the building's ductwork and eventually out the building.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: February 7, 2006
    Assignee: Greenheck Fan Corporation
    Inventors: Kyle A. Brownell, Scott W. Mathews, Alan Lorenz Breitenfeldt, Emery W. Neitzel
  • Two stage air filter
    Publication number: 20040194623
    Abstract: A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter is mounted within the hood of, for example, a cooking area and operable to receive grease-laden air and remove a portion of the impurities. The air is then sent to a secondary filter, also mounted within the hood, that removes additional impurities. The air is then sent through the building's ductwork and eventually out the building.
    Type: Application
    Filed: April 22, 2004
    Publication date: October 7, 2004
    Inventors: Kyle A. Brownell, Scott W. Mathews, Alan Lorenz Breitenfeldt, Emery W. Neitzel
  • Two stage air filter
    Patent number: 6797041
    Abstract: A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter is mounted within the hood of, for example, a cooking area and operable to receive grease-laden air and remove a portion of the impurities. The air is then sent to a secondary filter, also mounted within the hood, that removes additional impurities. The air is then sent through the building's ductwork and eventually out the building.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: September 28, 2004
    Assignee: Greenheck Fan Corporation
    Inventors: Kyle A. Brownell, Scott W. Mathews, Alan Lorenz Breitenfeldt, Emery W. Neltzel
  • Two stage air filter
    Publication number: 20030164093
    Abstract: A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter is mounted within the hood of, for example, a cooking area and operable to receive grease-laden air and remove a portion of the impurities. The air is then sent to a secondary filter, also mounted within the hood, that removes additional impurities. The air is then sent through the building's ductwork and eventually out the building.
    Type: Application
    Filed: March 1, 2002
    Publication date: September 4, 2003
    Inventors: Kyle A. Brownell, Scott W. Mathews, Alan Lorenz Breitenfeldt, Emery W. Neitzel