Patents Assigned to Symbio
  • Patent number: 12249743
    Abstract: A method for controlling humidity in a fuel cell, wherein hydrogen is fed at a nominal pressure to the inlet of the cell, characterized in that at predetermined periodicity the following steps are repeated: instruction is given to open a hydrogen purge valve arranged on the outlet of the anode circuit; the pressure of hydrogen is measured at the inlet to the anode circuit of the cell, and the measured value is compared with a threshold pressure value; the purge valve is closed when the measured pressure is equal to or lower than the predetermined threshold pressure value; the opening time of the purge valve is measured; and the humidity level prevailing at the cathode of the cell is inferred therefrom.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: March 11, 2025
    Assignee: Symbio
    Inventors: Gino Paganelli, Lionel Jeanrichard-dit-Bressel
  • Patent number: 12155101
    Abstract: A method for producing a membrane electrode assembly for a fuel cell comprising a proton exchange polymer membrane, catalyst layers, and first and second gas diffusion layers, the method comprising the following steps: a) forming a catalytic layer coating on a first surface of the membrane, the opposite surface being supported by a spacer; b) forming a catalytic layer coating on a first surface of the first gas diffusion layer; c) bringing the first surface of the first gas diffusion layer into contact with the surface opposite to the said first surface of the membrane, after removing the spacer, and bringing the first surface of the membrane into contact with a surface of the second gas diffusion layer.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: November 26, 2024
    Assignee: SYMBIO
    Inventors: Arnaud Grandjean, Benjamin Decoopman
  • Patent number: 11962037
    Abstract: The present application relates to a proton exchange membrane for fuel cell, said membrane having self-regenerating properties, to cells comprising said membranes, and to the manufacturing method thereof via electrospinning.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: April 16, 2024
    Assignees: SYMBIO, COLLEGE DE FRANCE, SORBONNE UNIVERSITÉ, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Christophe Vacquier, Nathalia Rovira, Christophe Baverel, Christel Laberty-Robert, Laura Coustan, Clément Sanchez
  • Patent number: 11664511
    Abstract: A method for purging the hydrogen feed anode circuit of a fuel cell, whereby hydrogen is fed at a nominal pressure to the inlet of the cell, characterized in that at predetermined periodicity the following steps are repeated: instruction is given to open the hydrogen purge valve arranged on the outlet of the anode circuit; the pressure of hydrogen is measured at the inlet to the anode circuit of the cell, and the measured value is compared with a predetermined threshold pressure value; and the purge valve is closed when the measured pressure is equal to or lower than the predetermined threshold pressure value.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: May 30, 2023
    Assignee: Symbio
    Inventors: Gino Paganelli, Lionel Jeanrichard-dit-Bressel
  • Publication number: 20090282099
    Abstract: Systems and methods for securing display information in distributed multihead computer systems are provided. The display information is generated by a display composition engine from inputs from application data streams and an input data stream. Techniques for electrically isolating display data streams from shared networks are provided. Techniques for configuring a secure distributed multihead system are provided.
    Type: Application
    Filed: May 11, 2009
    Publication date: November 12, 2009
    Applicant: SYMBIO TECHNOLOGIES, LLC
    Inventor: Gideon Z. Romm
  • Publication number: 20050267793
    Abstract: A method and computer program is provided for enhanced efficiency in meeting staffing requirements that includes receiving one or more staffing requirements for employment positions from an employer, preparing one or more candidate lists, preparing credential information for each available employee candidate, and sending the candidate lists and corresponding credential information to the employer. Each candidate list identifies one or more available employee candidates meeting the staffing requirements from each of a plurality of staffing agencies.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 1, 2005
    Applicant: SYMBIO SOLUTIONS, INC.
    Inventors: Robert Campbell, Dillon Durham, Rodney Shifflette
  • Publication number: 20030101153
    Abstract: A method of assembling a knowledge database containing question and answer pairs, the method comprising the steps of: extracting questions from a multiplicity of electronic communications; enabling the sender of the communication to examine and select or deselect the extracted question(s); classifying each question based upon the content of the question and identifying keywords in each question; entering the questions into the database together with their respective classifications and keywords; and entering into the database answers corresponding to the entered questions; wherein an answer to a question may be found by classifying the question and identifying keywords therein, identifying questions contained in the database which have the same or a similar classification and which contain some or all of the same keywords, and identifying the corresponding answers
    Type: Application
    Filed: November 27, 2002
    Publication date: May 29, 2003
    Applicant: SymBio IP Limited
    Inventors: Gillian E. Francis, Peter John Byford
  • Patent number: 6359191
    Abstract: A vaginal tampon contains living lactic acid bacteria (lacto-bacteria) and/or auxiliary substances for treating or regenerating the vaginal flora. The lacto-bacteria and auxiliary substances are enclosed in an air- and water-tight manner between thin layers, which are at least partially dissolved only when the tampon is used. The vaginal tampon releases the lacto-bacteria and/or auxiliary substances.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: March 19, 2002
    Assignee: Symbio Herborn Group GmbH & Co.
    Inventors: Volker Rusch, Kurt Zimmerman, Holger Brunsmann, Joachim Bruno Solfronk
  • Patent number: 6117849
    Abstract: Molecular Complexes, comprising of S-(+)-adenosylmethionine and 3'-azido-2',3'-dideoxy nucleosides are prepared, and shown to have synergistic inhibitory effects on the replication of human-immunodeficiency virus 1 & 2 in vitro and in vivo, particularly on the reverse transcriptase, and having a high therapeutic index.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: September 12, 2000
    Assignee: Symbio Herborn Group GmbH & Co.
    Inventors: Kurt Zimmermann, H. Heinrich Paradies