Patents by Inventor Jean-Paul Chalieux

Jean-Paul Chalieux 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).

  • Generation of boron-trifluoride and sulphuric acid from boron trifluoride hydrate
    Patent number: 6641791
    Abstract: The invention relates to the preparation of BF3 and H2SO4 of commercial grade from boron trifluoride hydrate effluents containing organic impurities. The process consists essentially in reacting the said effluent with oleum, in recovering the gaseous boron trifluoride thereby liberated and in subjecting the sulphuric acid by-product to treatment with hydrogen peroxide and to purging with air.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: November 4, 2003
    Assignee: Elf Atochem
    Inventors: Jean-Paul Chalieux, Christian Pralus
  • GENERATION OF BORON-TRIFLUORIDE AND SULPHURIC ACID FROM BORON TRIFLUORIDE HYDRATE
    Publication number: 20030147803
    Abstract: The invention relates to the preparation of BF3 and H2SO4 of commercial grade from boron trifluoride hydrate effluents containing organic impurities.
    Type: Application
    Filed: December 8, 1998
    Publication date: August 7, 2003
    Inventors: JEAN-PAUL CHALIEUX, CHRISTIAN PRALUS