Patents by Inventor Wilhelmus Cornelis Van Leeuwen

Wilhelmus Cornelis Van Leeuwen 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).

  • Device in process engineering column
    Patent number: 7377498
    Abstract: The liquid distributor includes a plurality of parallel spaced apart passages for receiving liquid, at least one carrier beam disposed transversely of and over the walls of the passages and at least one sheet metal plate slidably mounted on one of walls of the carrier beam in parallel relation to the wall. The walls of the carrier beam have hooks disposed in apertures of the passages and elevations disposed in recesses in the metal plate.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: May 27, 2008
    Assignee: Sulzer Chemtech AG
    Inventors: Emil Fehr, Bruno Keller, Wilhelmus Cornelis Van Leeuwen, John Heggen
  • Device in a process engineering column
    Patent number: 7287746
    Abstract: The device is arranged in a process engineering column (10) and serves in particular for the guiding of liquid. This device includes at least two parts (1, 2) made of sheet metal and releasably connected to one another. A recess (12) is arranged in the one part, the sheet metal part (1) of a first kind, and an elevation (21) fitting into the recess is arranged in the other part, the sheet metal part (2) of a second kind. The two sheet metal parts are held in a secured position by a hook connection between the recess and the elevation. The recess and the elevation form a single pair or one pair among several and the sheet metal parts have planar regions lying on top of one another in the neighbourhood (120, 210) of the pair or of each pair respectively.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: October 30, 2007
    Assignee: Sulzer Chemtech AG
    Inventors: Emil Fehr, Bruno Keller, Wilhelmus Cornelis Van Leeuwen, John Heggen
  • Device in a process engineering column
    Publication number: 20040103686
    Abstract: The device is arranged in a process engineering column (10) and serves in particular for the guiding of liquid. This device includes at least two parts (1, 2) made of sheet metal and releasably connected to one another. A recess (12) is arranged in the one part, the sheet metal part (1) of a first kind, and an elevation (21) fitting into the recess is arranged in the other part, the sheet metal part (2) of a second kind. The two sheet metal parts are held in a secured position by a hook connection between the recess and the elevation. The recess and the elevation form a single pair or one pair among several and the sheet metal parts have planar regions lying on top of one another in the neighbourhood (120, 210) of the pair or of each pair respectively.
    Type: Application
    Filed: October 21, 2003
    Publication date: June 3, 2004
    Inventors: Emil Fehr, Bruno Keller, Wilhelmus Cornelis Van Leeuwen, John Heggen