Patents by Inventor Clive Pemberton

Clive Pemberton 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).

  • Process for preparing benzo[b]naphthyridines
    Patent number: 5484921
    Abstract: This invention relates to a method for the preparation of benzo[b]naphthyridines having the general formula (I) ##STR1## comprising: 1) condensation of an amine having the formula R'--NH--CH.sub.2 --CH.sub.2 --R" with a chlorofluoroquinoline of formula (II) ##STR2## 2) cyclization of the obtained fluoroquinoline of formula (IV) ##STR3## and; 3) oxidation of tetrahydro-1,2,3,4benzo[b]naphthyridine-1,8 of formula (V) ##STR4## is effected, and then, optionally, the ester obtained is transformed into an acid and optionally into a salt.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: January 16, 1996
    Assignee: Laboratoire Roger Bellon
    Inventors: Christophe Daubie, Jean-Jacques Legrand, Clive Pemberton
  • Derivatives of fluoro-quinoline carboxylic-3-acid and preparation therefor
    Patent number: 5442070
    Abstract: This invention relates to new derivatives of fluoro quinoline carboxylic-3 acid having general formula (I), ##STR1## wherein R is a hydrogen atom or an alkyl radical and Hal is a halogen atom, as well as salts thereof, when they exist, preparation thereof and utilization as synthesis intermediary.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: August 15, 1995
    Assignee: Laboratoire Roger Bellon
    Inventors: Christophe Daubie, Jean-Jacques Legrand, Clive Pemberton