Patents by Inventor Pierre Bost

Pierre Bost 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).

  • Hydroxylation or aromatic compounds
    Patent number: 3953527
    Abstract: Aromatic compounds of formula ##SPC1##In which R and R.sup.1 are independently hydrogen or C.sub.1 - C.sub.4 alkyl are hydroxylated with hydrogen peroxide and a phosphorus compounds, which is a phosphoric acid, ester thereof, halogenophosphoric acid, ester thereof, phosphorus pentoxide, phosphorus halide or oxyhalide, in the absence of acid of pK < -0.1.
    Type: Grant
    Filed: May 1, 1973
    Date of Patent: April 27, 1976
    Assignee: Rhone-Poulenc, S.A.
    Inventors: Pierre Bost, Michel Constantini, Michel Jouffret, Guy Lartigau