Patents by Inventor Robert Andreae

Robert Andreae 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).

  • Filter apparatus and methods
    Patent number: 6790397
    Abstract: The invention provides a filter apparatus for removing air entrained particles comprising a pleated filter media. A first media member has a plurality of alternating upstream and downstream folds and a wall connecting the folds. A pair of slits forms an aperture and a hinged pleat. A second media member matingly attaches to the first media member.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: September 14, 2004
    Assignee: Andreae Filters, Inc.
    Inventors: C. Shaun Richerson, Robert Andreae
  • Filter apparatus and methods
    Publication number: 20040088958
    Abstract: The invention provides a filter apparatus for removing air entrained particles comprising a pleated filter media. A first media member has a plurality of alternating upstream and downstream folds and a wall connecting the folds. A pair of slits forms an aperture and a hinged pleat. A second media member matingly attaches to the first media member.
    Type: Application
    Filed: June 30, 2003
    Publication date: May 13, 2004
    Inventors: C. Shaun Richerson, Robert Andreae
  • Filter apparatus and methods
    Patent number: 6585793
    Abstract: The invention provides a filter apparatus for removing air entrained particles comprising a pleated filter media. A first media member has a plurality of alternating upstream and downstream folds and a wall connecting the folds. A pair of slits forms an aperture and a hinged pleat. A second media member matingly attaches to the first media member.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: July 1, 2003
    Assignee: Andreae Filters, Inc.
    Inventors: C. Shaun Richerson, Robert Andreae
  • Filter apparatus and methods
    Publication number: 20020083692
    Abstract: The invention provides a filter apparatus for removing air entrained particles comprising a pleated filter media. A first media member has a plurality of alternating upstream and downstream folds and a wall connecting the folds. A pair of slits forms an aperture and a hinged pleat. A second media member matingly attaches to the first media member.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: C. Shaun Richerson, Robert Andreae
  • Method of filtration
    Patent number: 5051118
    Abstract: The invention relats to a method of filtration of a gaseous flow in which the flow is passed through at least one chamber the inlet and outlet openings of which are displaced to cause a turbulent flow projecting the particles of greater size against the walls of the chamber. At least one part of the gaseous flow is evacuated out of the chamber through a porous downstream wall which catches the finest particles. The filter has two walls (1,5) of different length connected the one to the other along every second fold (2,6). The downstream wall (5) is formed of a porous unwoven bed of fibres. The two walls (1,5) are provided with displaced openings (4,8).
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: September 24, 1991
    Inventor: Robert Andreae