Patents by Inventor Leendert-Jan Van Doorn

Leendert-Jan Van Doorn 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: 20110300178
    Abstract: The invention relates to identification of novel sequences associated with cervical cancer, probes and kits for the identification of said sequences, and vaccines suitable for vaccination against new cancer causing HPV types.
    Type: Application
    Filed: November 12, 2009
    Publication date: December 8, 2011
    Applicant: DDL DIAGNOSTICS LABORATORY B.V.
    Inventors: Wilhelmus Gregorius Vincentius Quint, Maurits Nicolaas Cornelis De Koning, Daan Geraets, Leendert Jan Van Doorn, Silvia De Sanjose Llongueras, Francisco Javier Bosch
  • Publication number: 20090170066
    Abstract: The present invention relates to a method for detecting or detecting and identifying rotavirus in a biological sample. In particular, the invention relates to a detection method comprising contacting the nucleic acids from the sample or derived from the sample with at least one VP4 and/or VP7 universal probes in the context of a solid support and detecting any type-specific hybridisation. The invention further relates to a detection or detection followed by typing method comprising contacting the nucleic acids from the sample or derived from the sample with at least one P type-specific and G type-specific probes in the context of a solid support and detecting any type-specific hybridisation. The invention also relates to primers and probes used therein and to diagnostic kits.
    Type: Application
    Filed: March 16, 2006
    Publication date: July 2, 2009
    Inventors: Brigitte Desiree Alberte Colau, Evert Wilhelmus Hoefnagel, Gijsbertus Everardus Kleter, Annick Poliszczak, Wilhelmus Gregorius Quint, Leendert Jan Van Doorn
  • Publication number: 20090162843
    Abstract: A method for identification of an HPV16 lineage group in a sample, comprising contacting such nucleic acid simultaneously with three probes, each probe being capable of specific hybridization across positions 143 and 145 of a HPV 16 genome.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 25, 2009
    Inventors: Margretha Klazina Kamp, Gijsbertus Everardus Maria Kleter, Wilhelmus Gregorius Quint, Leendert Jan Van Doorn
  • Publication number: 20090053687
    Abstract: The invention relates to materials and methods method for detection and/or typing of any HPV nucleic acid possibly present in a biological sample, the method comprising the steps of: (i) amplification of a polynucleic acid fragment comprising or consisting of the B region of any HPV nucleic acid in the sample, said B region being indicated in FIG. 1, and (ii) contacting any amplified fragments from step (i) with at least one probe capable of specific hybridization with the B region of HPV, said B region being indicated in FIG. 1.
    Type: Application
    Filed: January 17, 2006
    Publication date: February 26, 2009
    Inventors: Brigitte Desiree Alberte Colau, Gijsbertus Everardus Maria Kleter, Wilhelmus Gregorius Quint, Dirk Cornelis Jerrefaas Gelde Van Alewijk, Henricus Arno Marie Van Den Munckhof, Leendert Jan Van Doorn
  • Publication number: 20030175746
    Abstract: The present invention relates to a method for the detection and/or typing of Helicobacter pylori (H. pylori ) strains present in a sample including the steps of (i) amplifying the polynucleic acids of target regions of the vacA gene and the cagA gene, with suitable primer pairs, the primers being generally applicable on different H. pylori strains, where the target regions include a conserved region in the case of the cagA alleles and a variable region in the case of the vacA alleles; (ii) hybridizing the polynucleic acids obtained with a set of at least two VDG (virulence determinant gene)-derived probes, and with at least one of the probes hybridizing to a conserved region of a cagA of H. pylori, and with at least one of the probes hybridizing to a variable region of vacA; (iii) detecting the hybrids formed; and (iv) detecting and/or typing H. pylori strains present in a sample from the differential hybridization signals obtained.
    Type: Application
    Filed: October 2, 2002
    Publication date: September 18, 2003
    Inventors: Wilhelmus Quint, Leendert-Jan Van Doorn
  • Publication number: 20030165860
    Abstract: The present invention relates to a method for the detection and/or typing of Helicobacter pylori (H. pylori) strains present in a sample comprising the steps of: (i) if need be releasing, isolating or concentrating the polynucleic acids in the sample, (ii) amplifying the polynucleic acids of relevant target regions of the vacA gene and possibly other virulence determinant genes (VDG), with suitable primer pairs, said primers being generally applicable on different H. pylori strains, allowing to amplify said relevant target regions of the VDG preferentially in compatible amplification conditions; (iii) hybridizing the polynucleic acids obtained in (i) or (ii) with a set of at least two VDG-derived probes, under appropriate hybridization and wash conditions, and with at least one of said probes hybridizing to a conserved region of a VDG of H. pylori, and with at least one of said probes hybridizing to a variable region of vacA; (iv) detecting the hybrids formed in step (iii), (v) detecting and/or typing H.
    Type: Application
    Filed: December 21, 2001
    Publication date: September 4, 2003
    Inventors: Wilhelmus Quint, Leendert-Jan Van Doorn
  • Patent number: 6221582
    Abstract: The invention relates to the use of the GTPase gene family as a target for nucleic acid based assays for the detection and differentiation of prokaryotic organisms. The invention relates to polynucleic acids derived from gene sequences encoding prokaryotic GTPase (=GTP-binding) proteins, as well as their use in the detection and identification of prokaryotic organisms; primers and probes derived from said polynucleic acid sequences, for specific amplification and detection of prokaryotic DNA in a biological sample; as well as methods and kits allowing the detection and identification of at least one micoroorganism, and preferentially several microorganisms simultaneously in a sample. More specifically, the invention relates to new polynucleic acid sequences encoding GTPase proteins from Campylobacter species, primers and probes derived from them, and methods and kits comprising these reagents for the detection and differentiation of species belonging to the genus Campylobacter.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: April 24, 2001
    Assignees: Innogenetics N.V., Delft Diagnostic Laboratory B.V.
    Inventors: Belinda Giesendorf, Wilhelmus Quint, Leendert-Jan Van Doorn