Patents by Inventor Jean-François Papagni

Jean-François Papagni 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).

  • Method and device for sampling gaseous compounds contained in a gas steam, notably in diluted exhaust gases from an internal-combustion engine
    Publication number: 20050109128
    Abstract: The present invention relates to a method and to a device for sampling gaseous compounds contained in a gas stream, notably in diluted exhaust gases from an internal-combustion engine. According to the invention, the method consists in providing passage of the gas stream through at least one sampling channel (26, 26a; 80, 80a) containing an adsorbent that traps the polycyclic aromatic hydrocarbons in gaseous form.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 26, 2005
    Inventors: Michel Pasquereau, Jean-Francois Papagni, Patrick Thoral, Richard Levesque, Laurent Dayde
  • Process and unit for sampling aldehydes and ketones contained in exhaust gases
    Patent number: 6513397
    Abstract: A unit for sampling aldehydes and ketones contained in diluted exhaust gases from thermal combustion engines has a specific trapping circuit and a simulation circuit that simulates the specific trapping circuit. The specific trapping circuit and the simulation circuit are arranged in parallel so that the diluted gases can be passed for some time in the simulation circuit (5) before they are passed into the specific trapping circuit wherein aldehydes and ketones are trapped.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: February 4, 2003
    Assignee: Institut Francais du Petrole
    Inventors: Michel Pasquereau, Jean-François Papagni, Richard Levesque, Laurent Dayde
  • Process and unit for sampling aldehydes and ketones contained in exhaust gases
    Publication number: 20020043116
    Abstract: A unit for sampling aldehydes and ketones contained in diluted exhaust gases from thermal combustion engines has a specific trapping circuit and a simulation circuit that simulates the specific trapping circuit. The specific trapping circuit and the simulation circuit are arranged in parallel so that the diluted gases can be passed for some time in the simulation circuit (5) before they are passed into the specific trapping circuit wherein aldehydes and ketones are trapped.
    Type: Application
    Filed: December 11, 2001
    Publication date: April 18, 2002
    Inventors: Michel Pasquereau, Jean-Francois Papagni, Richard Levesque, Laurent Dayde
  • Process and unit for sampling aldehydes and ketones contained in exhaust gases
    Patent number: 6339965
    Abstract: A process for sampling aldehydes and ketones contained in diluted exhaust gases from thermal combustion engines uses a sampling unit that has a specific trapping circuit and a simulation circuit that simulates the specific trapping circuit. The specific trapping circuit and the simulation circuit are arranged in parallel. The diluted gases are passed for some time in the simulation circuit (5) before they are passed into specific trapping circuit wherein aldehydes and ketones are trapped.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: January 22, 2002
    Assignee: Institut Francais du Petrole
    Inventors: Michel Pasquereau, Jean-François Papagni, Richard Levesque, Laurent Dayde