Patents by Inventor Herve Dumas

Herve Dumas 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: 6559185
    Abstract: The present invention relates to the compounds of formula: in which R1, R2, R3, E, A, X, Z, p and n are as defined herein. These compounds are aldose reductase inhibitors.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: May 6, 2003
    Assignee: Merck Patent GmbH
    Inventors: Claude Lardy, Jaques Barbanton, Herve Dumas, Francois Collonges, Philippe Durbin
  • Publication number: 20030069312
    Abstract: The present invention relates to the compounds of formula: 1
    Type: Application
    Filed: November 12, 1999
    Publication date: April 10, 2003
    Inventors: CLAUDE LARDY, JAQUES BARBANTON, HERVE DUMAS, FRANCOIS COLLONGES, PHILLIPE DURBIN
  • Patent number: 6509499
    Abstract: The invention concerns novel compound of general formula (1) in which: P, T1, T2, X and n are as defined in claim 1, their tautomeric forms, and their additive salts with pharmaceutically acceptable bases. The invention also concerns methods for preparing these compounds and their applications as medicines. These compounds inhibit the aldose reductase enzyme and can be used in the treatment or prevention of peripheral and autonomous neurological diabetic complications, renal and ocular disorders such as cataract and retinopathy.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: January 21, 2003
    Assignee: Merck PatentGesellschaft mit
    Inventors: François Collonges, Hervé Dumas, Claude Lardy, Philippe Durbin
  • Patent number: 6043281
    Abstract: The present invention relates to the compounds of formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3, E, A, X, Z, p and n are as defined herein. These compounds are aldose reductase inhibitors.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: March 28, 2000
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Claude Lardy, Jaques Barbanton, Herve Dumas, Francois Collonges, Philippe Durbin
  • Patent number: 5932765
    Abstract: The present invention relates to the compounds of formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3, E, A, X, Z, p and n are as defined herein. These compounds are aldose reductase inhibitors.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: August 3, 1999
    Assignee: Merck Patent Gesellschaft Mit
    Inventors: Claude Lardy, Jaques Barbanton, Herve Dumas, Francois Collonges, Phillippe Durbin
  • Patent number: 5489592
    Abstract: Novel 3,4-dihydro-4-oxo-3(prop-2-enyl)-1-phtalazineacetic acids and derivatives of formula (I) ##STR1## in which R.sub.1 R.sub.2 and R.sub.3 are the same or different and stand for H, a halogen or a linear or branched aliphatic, saturated or unsaturated radical, substituted or not by at least one halogen or R.sub.4 residue such as defined below, except when R.sub.4 is H; R.sub.4 and R.sub.5 are the same or different and stand for H, a linear or branched aliphatic radical, saturated or unsaturated, an aryl or heteroaryl radical, said radicals being substituted or not by at least one grouping such as fluorine, chlorine, bromine, methyl or trifluoromethyl, where R.sub.4 and R.sub.5 do not simultaneously denote H; R.sub.6 stands for hydroxy or alkoxy radical; R.sub.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: February 6, 1996
    Assignee: Lipha, Lyonnaise Industrielle Pharmaceutique
    Inventors: Francois Collonges, Herve Dumas, Philippe Durbin, Daniel Guerrier
  • Patent number: 5270465
    Abstract: The present invention relates to 4(3H)-pteridinones represented by the formula: ##STR1## in which X is an oxygen atom or a sulphur atom, Y is a hydrogen atom, a lower alkyl radical, especially a methyl radical, at the 6-position or a hydroxyl group at the 7-position, R.sub.1 is a hydrogen atom, a lower alkyl radical, a substituted or unsubstituted phenyl radical, a benzyl radical, a methoxymethyl group, an acetyl group, a 2-acetoxyethyl group or a 2,2,2-trifluoroethyl group and R.sub.2 is a hydrogen atom or a lower alkyl radical, especially a methyl radical.Application of these compounds as anti-allergic drugs.
    Type: Grant
    Filed: November 3, 1992
    Date of Patent: December 14, 1993
    Assignee: Lipha, Lyonnaise Industrille Pharmaceutique
    Inventors: Gerard Ferrand, Herve Dumas, Jean-Claude Depin, Yvette Quentin
  • Patent number: 5167949
    Abstract: The present invention relates to 4(3H)-pteridinones represented by the formula: ##STR1## in which X is an oxygen atom or a sulphur atom, Y is a hydrogen atom, a lower alkyl radical, especially a methyl radical, at the 6-position or a hydroxyl group at the 7-position, R.sub.1 is a hydrogen atom, a lower alkyl radical, a substituted or unsubstituted phenyl radical, a benzyl radical, a methoxymethyl group, an acetyl group, a 2-acetoxyethyl group or a 2,2,2-trifluoroethyl group and R.sub.2 is a hydrogen atom or a lower alkyl radical, especially a methyl radical. Application of these compounds as anti-allergic drugs.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: December 1, 1992
    Assignee: Lipha, Lyonnaise Industrielle Pharmaceutique
    Inventors: Gerard Ferrand, Herve Dumas, Jean-Claude Depin, Yvette Quentin
  • Patent number: 5001134
    Abstract: The present invention relates to piperidines denoted by the formula: ##STR1## in which X is the 4-fluorobenzoyl, 2-(4-fluorophenyl)-1,3-dioxolan-2-yl or 6-fluoro-1,2-benzisoxazol-3-yl group, Y is a hydrogen atom or the hydroxyl group, m is an integer between 0 and 4 inclusive, n is 0 or 1, Q is a nitrogen atom or the methine group; when Q is a nitrogen atom, R is the cyano group or the carbamoyl group; when Q is the methine group, R is the nitro group; R.sup.1 and R.sup.2 may be identical or different and are hydrogen, a lower alkyl radical, the phenyl radical, the 2,2,2-trifluoroethyl group or the 2-[4-(4-fluorobenzoyl)-1-piperidinyl]ethyl group; or the NR.sup.1 R.sup.2 structural unit is the piperidino radical or the 4-(4-fluorobenzoyl)-1-piperidinyl group.Application of these compounds as antihypertensive medications.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: March 19, 1991
    Assignee: Lipha, Lyonnaise Industrielle Pharmaceutique
    Inventors: Gerard Ferrand, Herve Dumas, Jean-Claude Depin, Gilles Chavernac
  • Patent number: 4552878
    Abstract: This invention relates to benzo- and thieno-triazine-1,2,3 ones-4 represented by the formula ##STR1## in which m is 2, 3 or 4, X is the vinylene group --CH.dbd.CH-- or a sulfur atom; R.sub.1 and R.sub.2 can be alike or different and are hydrogen, halogen, a lower alkyl radical, lower alkoxy radical or trifluoromethyl radical; when X is --CH--CH-- n is 0, 1 or 2 and R is hydrogen, halogen, a lower alkyl radical, lower alkoxy radical or nitro group; when X is a sulfur atom, R is hydrogen or constitutes a --CH.sub.2 --.sub.4 chain between the two open positions of the thiophenic ring. The compounds are useful as antidepressant drugs.
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: November 12, 1985
    Assignee: Lipha, Lyonnaise Industrielle Pharmaceutique
    Inventors: Gerard Ferrand, Herve Dumas, Michel Bayssat, Jean-Claude Depin