Patents by Inventor John Horsey

John Horsey 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).

  • Air filter for extraction apparatus
    Patent number: 6537337
    Abstract: A filter for air extraction apparatus is disclosed, which is assembled from a porous material arranged to collect contaminants. The filter comprises a bag with a constricted inlet for receiving contaminated air. The bag is formed from a plurality of envelopes having filtering side walls and each of the envelopes has at least one orifice connected to an orifice of an adjacent envelope.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: March 25, 2003
    Inventors: Philip Arthur Mullins, John Horsey
  • Air filter for extraction apparatus
    Publication number: 20020162308
    Abstract: A filter for air extraction apparatus is disclosed, which is assembled from a porous material arranged to collect contaminants. The filter comprises a bag with a constricted inlet for receiving contaminated air. The bag is formed from a plurality of envelopes having filtering side walls and each of the envelopes has at least one orifice connected to an orifice of an adjacent envelope.
    Type: Application
    Filed: May 25, 2001
    Publication date: November 7, 2002
    Inventors: Philip Arthur Mullins, John Horsey