Patents by Inventor Etienne Werlen

Etienne Werlen 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).

  • Bath reboiler-condenser and corresponding air distillation plant
    Patent number: 6374636
    Abstract: This bath reboiler-condenser (4), of the brazed plate type, includes vaporization passages (11) subdivided into a plurality of stacked vaporization regions (13A to 13C) each of which is immersed in a partial height bath (28A to 28C), and means for feeding the top vaporization region (13C) with liquid. The vaporization regions (13A to 13C) are spaced vertically and each region is entirely open at its top and bottom ends. Application to the main reboiler-condensers of double air distillation columns.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: April 23, 2002
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean-Yves Thonnelier, Jean-Yves Lehman, Jean-Renard Brugerolle, Etienne Werlen
  • Heat-exchange fin for a brazed-plate heat exchanger, and corresponding heat exchanger
    Publication number: 20020011331
    Abstract: A fin (9) includes a perforated and/or recessed corrugated product which has a main direction of corrugation (F1) and which is bounded by two lateral edges (13). The main direction of corrugation (F1) is oblique with respect to the two lateral edges (13). The fin is useful in the main heat-exchange lines of air distillation plants.
    Type: Application
    Filed: July 11, 2001
    Publication date: January 31, 2002
    Applicant: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
    Inventors: Jean-Yves Lehman, Etienne Werlen
  • Corrugated fin with partial offset for a plate-type heat exchanger and corresponding plate-type heat exchanger
    Publication number: 20010054499
    Abstract: In this corrugated fin, each corrugation leg (10A, 10B) has a notch (18A, 18B) on at least one edge (11A) and over at least part of its height.
    Type: Application
    Filed: April 17, 2001
    Publication date: December 27, 2001
    Inventors: Claude Gerard, Claire Szulman, Fabienne Chatel, Jean-Yves Thonnelier, Etienne Werlen
  • Corrugated strip for cross-corrugated packing and its use in on-board distillation columns
    Patent number: 6251499
    Abstract: This corrugated strip comprises on its lower edge, in front view, at least one downwardly projecting motif (9) whose contour is such that, if &agr;m and &agr;M designate the ends of the algebraic value of the angle that the tangent to the contour forms with the horizontal direction, then −&agr;m>&agr;0 and &agr;M>&agr;0, wherein &agr;0 designates a predetermined angle at least equal to 5°. The corrugated is particularly useful in air distillation columns on board floating oil platforms or barges.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: June 26, 2001
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean-Yves Lehman, Etienne Werlen