Patents by Inventor R. Ramanadin

R. Ramanadin 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).

  • Preparation of fluorobenzonitriles
    Patent number: 4351777
    Abstract: Fluorobenzonitriles are prepared by reacting their corresponding chlorobenzonitriles with at least one alkali metal fluoride, in an aprotic solvent reaction medium, in the presence of at least one tertiary amine sequestering agent having the structural formula:N--CHR.sub.1 --CHR.sub.2 --O--(CHR.sub.2 --CHR.sub.4 --O).sub.n R.sub.5 ].sub.3.
    Type: Grant
    Filed: September 22, 1981
    Date of Patent: September 28, 1982
    Assignee: Rhone-Poulenc Industries
    Inventors: R. Ramanadin, Alain Roustan, Gerard Soula