Patents by Inventor Stephan Dupont

Stephan Dupont 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).

  • Publication number: 20240109038
    Abstract: A method of purifying tap water to produce deionized type 2 pure water on a laboratory scale with a volume of up to 300 l/h using a water purification system, the method including detecting the permeate flow rate produced by a reverse-osmosis device downstream of a permeate outlet; detecting the flow rate of retentate flow that is removed from the system downstream of a first flow rate regulator; and remote controlling the first and a second flow rate regulators based on the detection results from first and second flow meters such that a predetermined target recovery rate and a predetermined target permeate flow rate are controlled.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 4, 2024
    Inventors: Pascal Roitel, Christophe Paragot, Emmanuel Feuillas, Stephane Dupont
  • Publication number: 20180318767
    Abstract: A laboratory scale water purification system for producing up to 300 l/h deionized type 2 pure water from tap water, said system comprising a feed medium flow path including a pump (1) for supplying the feed medium under pressure to a feed inlet of a reverse-osmosis (RO) device (2) which is adapted to produce a permeate flow and a concentrate flow from the feed medium. An electro-deionization (EDI) device (10) is provided and has an inlet which is in fluid communication with a permeate outlet of the RO device (2) and has a purified water outlet.
    Type: Application
    Filed: October 28, 2015
    Publication date: November 8, 2018
    Inventors: Pascal Roitel, Christophe Paragot, Emmanuel Feuillas, Stephane Dupont
  • Patent number: 9308308
    Abstract: Systems and methods for hemodialysis or peritoneal dialysis having integrated electrodeionization capabilities are provided. In an embodiment, the dialysis system includes a carbon source, a urease source and an electrodeionization unit. The carbon source and urease source can be in the form of removable cartridges.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: April 12, 2016
    Assignees: Baxter International Inc., Baxter Healthcare S.A., Millipore Corporation
    Inventors: Yuanpang Samuel Ding, Ying-Cheng Lo, Joshua James Miller, Justin Rohde, Sujatha Karoor, Stephane Dupont
  • Publication number: 20150021268
    Abstract: Systems and methods for hemodialysis or peritoneal dialysis having integrated electrodeionization capabilities are provided. In an embodiment, the dialysis system includes a carbon source, a urease source and an electrodeionization unit. The carbon source and urease source can be in the form of removable cartridges.
    Type: Application
    Filed: October 3, 2014
    Publication date: January 22, 2015
    Inventors: Yuanpang Samuel Ding, Ying-Cheng Lo, Joshua James Miller, Justin Rohde, Sujatha Karoor, Stephane Dupont
  • Patent number: 8858792
    Abstract: Systems and methods for hemodialysis or peritoneal dialysis having integrated electrodeionization capabilities are provided. In an embodiment, the dialysis system includes a carbon source, a urease source and an electrodeionization unit. The carbon source and urease source can be in the form of removable cartridges.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: October 14, 2014
    Assignees: Baxter International Inc., Baxter Healthcare S.A., EMD Millipore Corporation
    Inventors: Yuanpang Samuel Ding, Ying-Cheng Lo, Joshua James Miller, Justin Rohde, Sujatha Karoor, Stephane Dupont
  • Publication number: 20050013739
    Abstract: The invention relates to an analyzer device of the kind using purified water and including one or more analyzer means adapted to carry out predetermined analyses and defining at least one point of use of the purified water and having a water purification system at least partially formed on board the device. The water purification system includes a variety of water purification modules adapted to produce purified water for the one or more analyzer means having a predetermined purity and in that the purified water is taken up by the one or more analyzer means immediately after it has been purified.
    Type: Application
    Filed: May 26, 2004
    Publication date: January 20, 2005
    Inventors: Stephane Dupont, Yves Gaignet
  • Patent number: 6824662
    Abstract: An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from the fluid in an electrodeionization device.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: November 30, 2004
    Assignee: USFilter Corporation
    Inventors: Li-Shiang Liang, Anil Jha, John Arba, Stephane Dupont
  • Publication number: 20040089551
    Abstract: An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from the fluid in an electrodeionization device.
    Type: Application
    Filed: October 27, 2003
    Publication date: May 13, 2004
    Applicant: UNITED STATES FILTER CORPORATION
    Inventors: Li-Shiang Liang, Anil Jha, John Arba, Stephane Dupont
  • Patent number: 6649037
    Abstract: An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from the fluid in an electrodeionization device.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: November 18, 2003
    Assignee: United States Filter Corporation
    Inventors: Li-Shiang Liang, Anil Jha, John Arba, Stephane Dupont
  • Publication number: 20030182114
    Abstract: The present invention relates to a method of automatic processing of noise-affected speech comprising at least the following steps:
    Type: Application
    Filed: November 1, 2002
    Publication date: September 25, 2003
    Inventor: Stephane Dupont
  • Publication number: 20020189951
    Abstract: An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from the fluid in an electrodeionization device.
    Type: Application
    Filed: May 29, 2001
    Publication date: December 19, 2002
    Inventors: Li-Shiang Liang, Anil Jha, John Arba, Stephane Dupont
  • Publication number: 20010014983
    Abstract: The present invention provides a passive deodorization device housing suitable for use in a portable toilet enclosure having a vent tube for venting odors from a holding tank. The deodorization device housing includes an engagement surface for engaging a vent tube outer surface, and an aperture. Two fingers extend from the aperture into the vent tube. A retention member mounted on the fingers engage a vent tube inner surface and clamp the vent tube wall between the housing and retention member. A deodorizing element slipped into the aperture between the fingers can deodorize the malodorous vapors associated with the toilet.
    Type: Application
    Filed: May 4, 2001
    Publication date: August 23, 2001
    Inventors: John D. Bryson, George P. Roberts, Wolfgang Clemens, Stephan Dupont, Joseph J. Hennessey, David L. Vergara
  • Patent number: 6249919
    Abstract: The present invention provides a passive deodorization device suitable for use in a portable toilet enclosure having a vent tube for venting odors from a holding tank. The deodorization device has a housing having an engagement surface for engaging a vent tube outer surface, and an aperture. Two fingers extend from the aperture into the vent tube. A retention member mounted on the fingers engage a vent tube inner surface and clamp the vent tube wall between the housing and retention member. A deodorizing element slipped into the aperture between the fingers deodorizes the malodorous vapors associated with the toilet.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: June 26, 2001
    Assignee: Vaportex, Inc.
    Inventors: John D. Bryson, Jr., George P. Roberts, Wolfgang Clemens, Stephan Dupont, Joseph J. Hennessey, David L. Vergara
  • Patent number: 5925240
    Abstract: A water treatment system having dosing control for providing treated water having very low organic and ionic contamination, that can be accurately dispensed. The water treatment system having dosing control includes a water inlet hydraulically connected to a pump having a variable speed motor. At least one water treatment device is hydraulically connected downstream of the pump, at least one outlet valve is hydraulically connected downstream of the water treatment unit, and a recirculation line is hydraulically connected from the outlet valve to the pump. The output of the pump is controlled by a regulating device connected to the variable speed motor. The system provides for lower electrical current usage and reduced acoustical disturbances.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: July 20, 1999
    Assignee: United States Filter Corporation
    Inventors: Frederick C. Wilkins, Li-Shiang Liang, Herbert Bendlin, Stephane Dupont, Achim Brust, Felix Nussbaum
  • Patent number: 5919357
    Abstract: A filter cartridge assembly comprising: at least one filter cartridge; said filter cartridge including a housing having two ends, the housing containing a filter media; a first end cap disposed on one end of said housing, said first end cap including a fluid inlet port, a fluid outlet port, a first fluid distributor, and a vent including at least one hydrophobic membrane positioned in a channel formed in said first end cap that allows entrapped air to be removed from said cartridge; a second end cap disposed on a second end of said housing, said second end cap including a product collection plenum, and a second fluid distributor that separates said filter media from said product collection plenum; and a liquid transfer tube disposed within the housing and extending from said product collection plenum to said fluid outlet port, is disclosed.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: July 6, 1999
    Assignee: United States Filter Corporation
    Inventors: Frederick C. Wilkins, Arthur F. Williams, Li-Shiang Liang, Herbert Bendlin, Stephane Dupont, Achim Brust, Bikram Yonjan
  • Patent number: 5762290
    Abstract: The present invention relates to a system for guiding a missile in alignment onto a moving target. In particular, the guidance computer of the system has a first unit for estimating the state of the missile and the movements of a target on the basis of the measurement of the position of the missile with respect to a datum axis, obtained by angular deviation measuring means, and by using a model of the dynamic behavior of the missile as well as kinematic model of the target. Additionally, the guidance computer has a second unit linked to the first unit for deriving tracking orders and datum values for slaving the missile, and a third unit linked to the first and second units for deriving the control order applied to the missile and the first unit.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: June 9, 1998
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventor: Stephane Dupont