Patents by Inventor Gerard Quentin

Gerard Quentin 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).

  • Publication number: 20130023002
    Abstract: The disclosure relates to the use of a proteolytic enzyme substrate of general formula: Q1-Xaa2-Xaa1-rhodamine110-Q2, in which: Xaa1 and Xaa2 are amino acids and Q2 is a group comprising an alkyl group; so as to be able to allow, in a blood sample containing a glycosaminoglycan, said glycosaminoglycan to inhibit the coagulation of said blood sample, via which the anticoagulant capacity of the glycosaminoglycan is not disrupted.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Inventors: Gérard QUENTIN, Audrey CARLO, Loïse BOULANGER
  • Publication number: 20130023001
    Abstract: The disclosure relates to the use of a proteolytic enzyme substrate of general formula: Q1-Xaa2-Xaa1-rhodamine110-Q2, in which Xaa1 and Xaa2 are amino acids and Q2 is Xaa1-Xaa2-Q1, or an amino acid Xaa3, or a group comprising an aryl group, or H, so as to be able to inhibit, in a blood sample containing a glycosaminoglycan, the anticoagulant capacity of said glycosaminoglycan. The invention also relates to a method for measuring an enzymatic activity using such a substrate and a kit for implementation thereof.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Inventors: Gérard QUENTIN, Audrey CARLO, Loïse BOULANGER
  • Patent number: 7405280
    Abstract: The invention relates to chromogenic compounds and the use thereof for the determination of enzymes of the family of carboxypeptidases N and carboxypeptidases U. The above is more specifically a compound of formula (I) in which A=(1), (2), (3), (4) or (5), R1, R2=H, —CH3, —CH(CH3)2, —OCH3, —Cl,—CF3,—OCF3,—SCH3, R3=an amino acid group which may be hydrolysed by a carboxypeptidase A and R4=a basic amino acid group.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: July 29, 2008
    Assignee: Diagnostica Stago
    Inventor: Gérard Quentin
  • Patent number: 7208266
    Abstract: The invention concerns contact activators for the endogenous coagulation pathway and their use in exploring coagulation anomalies. The activators of the invention are derivatives of gallic acid, preferably polyethylene glycol gallates.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: April 24, 2007
    Assignee: Societe Diagnostica-Stago
    Inventors: Jean-Paul Roisin, Stéphane Steurs, Gérard Quentin
  • Patent number: 7047702
    Abstract: A wall molding for suspended ceiling systems has a self-aligning feature adapted to locate one end of a piece being installed on the end of a previously installed piece so that an installation of high quality workmanship is quickly obtained. The self-aligning feature is in the form of a tongue extending longitudinally beyond a faux end and adapted to nest in the previously installed piece. The tongue fits within the spaces between hems on the longitudinal edges of legs of a right angle cross-section and the opposed legs so that the tongue is laterally restrained in the planes of the legs and is longitudinally restrained by abutting end edges.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: May 23, 2006
    Assignee: USG Interiors, Inc.
    Inventors: Jean-Pierre Callens, Gerard Quentin
  • Publication number: 20050107305
    Abstract: The invention relates to chromogenic compounds and the use thereof for the determination of enzymes of the family of carboxypeptidases N and carboxypeptidases U. The above is more specifically a compound of formula (I) in which A=(1), (2), (3), (4) or (5). R1. R2=H. —CH3, —CH(CH3)2, —OCH3, —Cl.—CF3,—OCF3,—SCH3, R3=an amino acid group which may be hydrolysed by a carboxypeptidase A and R4=a basic amino acid group.
    Type: Application
    Filed: January 5, 2004
    Publication date: May 19, 2005
    Applicant: SOCIETE DIAGNOSTICA-STAGO
    Inventor: Gerard Quentin
  • Patent number: 6835808
    Abstract: The invention concerns a compound exhibiting an anti-heparin activity, of formula ZBm?(AXA)xBn?(AXA)yBo(AXA)zBp, the diagnostic reagents comprising it and the use of said compound in an in vitro diagnostic test of a medicine for anti-heparin activity.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: December 28, 2004
    Assignee: Diagnostica-Stago
    Inventors: Gérard Quentin, Florence Laur
  • Publication number: 20030171539
    Abstract: The invention concerns a compound exhibiting an anti-heparin activity, of formula Z Bm ! (AXA)x Bn ! (AXA)y Bo (AXA)z Bp, the diagnostic reagents comprising it and the use of said compound in an in vitro diagnostic test of a medicine for anti-heparin activity.
    Type: Application
    Filed: April 4, 2003
    Publication date: September 11, 2003
    Inventors: Gerard Quentin, Florence Laur
  • Publication number: 20030157582
    Abstract: The invention concerns contact activators for the endogenous coagulation pathway and their use in exploring coagulation anomalies.
    Type: Application
    Filed: November 22, 2002
    Publication date: August 21, 2003
    Applicant: Societe Diagnostica-Stago
    Inventors: Jean-Paul Roisin, Stephane Steurs, Gerard Quentin
  • Patent number: 6121239
    Abstract: Peptide substrates selected from the group consisting of (i) the tri- and tetra-peptides of the formulaQ-A.sub.1 -A.sub.2 -Gly-A.sub.4 -R (I)having SEQ ID NO: 1 in which Q is a group which blocks the N-termnal end of the peptide chain, A.sub.1 is selected from the group consisting of Leu, Ile, Nle, Nva, CHA, CHG, CHT, Phe, Ala and Lys groups, where the basic side-group of the Lys residue is blocked with a suitable group which substantially removes the basic character of said side-group, A.sub.2 is a single bond, Asp or Glu, the carboxylic acid side-group of Asp and Glu being capable of esterification or amidation, A.sub.4 is selected from the group consisting of Arg and Lys groups, and R is pNA; and (ii) their addition salts. These peptide substrates are useful in the determination of Factor Xa.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: September 19, 2000
    Assignee: Serbio
    Inventors: Gerard Quentin, Jean-Luc Martinoli
  • Patent number: 5449612
    Abstract: The present invention relates to a method of determining, assaying and identifying strains of Candida and pathogenic strains belonging to species Torulopsis glabrata by means of chromogenic substrates of monoamino acid or peptide type without the isolation of the strains to be identified.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: September 12, 1995
    Assignee: Serbio
    Inventors: Jean-Pierre Lepargneur, Genevieve Contant epouse Pussard, Jean-Luc Martinoli, Gerard Quentin
  • Patent number: 5362851
    Abstract: The present invention relates, by way of novel industrial products, to peptide compounds selected from the group consisting of(i) the tripeptides of the formulaY--A.sub.1 --A.sub.2 --A.sub.3 --R (I)in whichY is H or an appropriate group blocking the N-terminal end,A.sub.1 is an amino acid residue selected from the group consisting of (2-oxothiazolidin-4-yl)carbonyl [abbreviated to THC], (2-oxotetrahydro-1,3-thiazin-5yl)carbonyl [abbreviated to TZC], thiazolidine-4-carbonyl [abbreviated to ATC] and (tetrahydro-1,3-thiazin-5-yl)carbonyl [abbreviated to AZC] residues,A.sub.2 is an amino acid residue selected from the group consisting of Pro, 3Hyp and 4Hyp residues, where the OH side-group of 3Hyp and 4Hyp is capable of being protected by an ether or ester protecting group,A.sub.3 is an amino acid residue selected from the group consisting of Arg and Lys residues, andR is a labeling means; and(ii) their addition salts.These novel compounds are useful as substrates in the determination of Protein C.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: November 8, 1994
    Assignee: Serbio
    Inventors: Gerard Quentin, Jean-Luc Martinoli
  • Patent number: 5225532
    Abstract: The new invention relates, by way of novel industrial products, to compounds selected from(i) the symmetrical amino acids and peptides of the formulaR--A--B--CO--Q--CO--B--A--R (I)in whichQ is a polyalkylene glycol residue selected from the polyethylene glycol and polypropylene glycol residues of the formula--O[CH(X)CH.sub.2 O]--in which X is H or Me and n is an integer greater than or equal to 1,B is a single bond, a monoamino acid residue or a peptide chain comprising from 2 to 9 monoamino acid residues,A is a basic monoamino acid residue selected from the group consisting of .alpha.-amino acid residues containing a basic group on a side-chain, andR is a labeling means making it possible to develop the enzyme substance to be identified or assayed; and(ii) their addition salts.These novel compounds are useful as substrates for the assay of enzymes, especially proteases and peptidases.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: July 6, 1993
    Assignee: Serbio
    Inventors: Gerard Quentin, Jean-Luc Martinoli