Patents by Inventor Samuel Djelassi

Samuel Djelassi 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).

  • Patent number: 8846359
    Abstract: A method of regenerating an enzymatic catalyst arranged in a reactor includes a mineral support based on metal oxide and at least one enzyme, wherein it contains at least one step of detachment of the spent enzymes by solvation by scavenging of the catalyst using at least one ionic surfactant, and at least one step of re-attachment of active enzymes by scavenging of the purified support with at least one solution of active enzymes, the two steps being performed in situ within the reactor.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: September 30, 2014
    Assignee: Total Marketing Services
    Inventors: Daniel Thomas, Sylviane Pulvin, Lotfi Hedhli, Samuel Djelassi
  • Publication number: 20130035533
    Abstract: A process is disclosed for reducing the content of polycyclic aromatic hydrocarbons or PAHs in aromatic extracts including oxidizing the PAHs in the presence of a hemoprotein via an oxidizing compound, wherein the aromatic extract is brought into contact with the oxidizing agent in a non-reactive organic solvent, then is brought into contact with the immobilized or supported hemoprotein.
    Type: Application
    Filed: April 7, 2011
    Publication date: February 7, 2013
    Applicant: TOTAL RAFFINAGE MARKETING
    Inventors: Lotfi Hedhli, Samuel Djelassi, Sylviane Pulvin, Daniel Thomas