Patents by Inventor Philippe Laurent

Philippe Laurent 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: 6043399
    Abstract: The present invention lies in the field of the manufacture of phenol from cumene. The subject of the invention is a process for the continuous preparation of cumene hydroperoxide by oxidation, in the liquid phase, of cumene in the presence of oxygen. The process according to the invention is carried out in the presence of at least one agent chosen from the hydroxide or the carbonate of an alkali metal and/or alkaline-earth metal; the said agent being used in an amount of between 2 and 10 ppb (expressed as sodium hydroxide) with respect to the amount of cumene introduced. The invention likewise relates to the use of the hydroperoxide thus obtained for preparing phenol.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: March 28, 2000
    Assignee: Rhodia Chimie
    Inventors: Joao Amadio, Brice Le Corre, Jean-Jacques Charrin, Xavier Houzard, Philippe Laurent, Roland Noyerie, Yves-Michel Quenton
  • Patent number: 5795915
    Abstract: The invention relates to the use of a compound selected from:?.alpha.-(tert-butylaminomethyl)-3,4-dichlorobenzyl!thioacetamide and its laevorotatory isomer,?.alpha.-(tert-amylaminomethyl)-3,4-dichlorobenzyl!thioacetamide and its isomers,?.alpha.-(1-adamantylaminomethyl)3,4-dichlorobenzyl!thioacetamide and its isomers,as well as the addition salts of these compounds with pharmaceutically acceptable acids, for inhibiting dopamine reuptake.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: August 18, 1998
    Assignee: Laboratoire L. Lafon
    Inventor: Philippe Laurent
  • Patent number: 5719168
    Abstract: The present invention relates to compounds of formula (I) wherein R.sub.1 is selected from H and 3-chloro; R.sub.2 is selected from a phenyl group and a pyridyl group; R.sub.3 and R.sub.4 are selected independently of each other from H and methyl; R.sub.5 and R.sub.6 are selected independently of each other from H and a pyridyl-methyl group or both represent an ethyl group; n=0 or 1; R.sub.1, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are not simultaneously H when R.sub.2 is phenyl. The salts of the compounds have a pyridyl group with pharmaceutical acceptable acids are also disclosed.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: February 17, 1998
    Assignee: Laboratoire L. Lafon
    Inventor: Philippe Laurent
  • Patent number: 5633383
    Abstract: The invention relates to a process which comprises the crystallization of a calcium salt of chiral (R or S) lactic acid esterified with a racemic dihydropyridine.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: May 27, 1997
    Assignee: Laboratoire L. Lafon
    Inventor: Philippe Laurent
  • Patent number: 5612379
    Abstract: The present invention relates to the utilization of modafinil for the treatment of ventilation disorders of central origin such as sleep apnea.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: March 18, 1997
    Assignee: Laboratoire L. Lafon
    Inventor: Philippe Laurent
  • Patent number: 5439920
    Abstract: The invention relates to a compound of formula: ##STR1## and its addition salts with pharmaceutically acceptable acids. These compounds are useful in therapy as sedatives.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: August 8, 1995
    Assignee: Laboratoire L. Lafon
    Inventor: Philippe Laurent
  • Patent number: 5401776
    Abstract: The present invention relates to the use of modafinil for the manufacture of a medicinal product for the treatment of urinary and fecal incontinence and urethrovesical and anal sphincteral disorders.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: March 28, 1995
    Assignee: Laboratoire L. Lafon
    Inventor: Philippe Laurent
  • Patent number: 5009846
    Abstract: The device comprises at least one element for immobilizing certain molecules contained in the medium to be tested. According to the invention, the immobilizing element is in the form of a hydrophilic material fixed on the surface of a plane hydrophobic material, such as for example viscose fibers (2) implanted by flocking into a sheet (3) of polyvinyl chloride. The device (4) further comprises:(a) a bottom plate (5) supporting the plane hydrophobic material,(b) at least one cavity (6) for the liquid medium to be tested, said cavity having an outlet orifice (9) situated above the plane hydrophobic material, and(c) scraping means (8) acting on the hydrophilic material (1) and capable of moving the liquid contained therein over the surface of the plane hydrophobic material (3).
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: April 23, 1991
    Assignees: Centre Technique Industriel dit: Institut Textile de France, Probiotec (SARL)
    Inventors: Louis Gavet, Roger Chatelin, Michel Sotton, Robert Guigal, Philippe Laurent