Patents by Inventor Wan Ji

Wan Ji 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: 20080268437
    Abstract: A method for targeted and comprehensive sequencing using high-density oligonucleotide array, comprising the steps of hybridizing nucleic acid from an investigative species with high-density oligonucleotide arrays of a related species, identifying the oligonucleotide probes that generate high hybridization signals, using the probes sequences to make PCR primers, amplifying heterologous genes by PCR with the gene specific PCR primers and an anchoring primer, and sequencing the PCR products.
    Type: Application
    Filed: September 27, 2005
    Publication date: October 30, 2008
    Inventors: Wan Ji, Wenli Zhou, Sara F. Davis, Scott K. Davis
  • Publication number: 20080131886
    Abstract: The present disclosure relates to methods of DNA amplification with a first primer that has a random sequence of nucleotides at its 3? end and a generic sequence 5? of the random nucleotides, as well as a second primer with the generic sequence of the first primer. The disclosure further relates to a method of precipitating DNA on a solid medium to improve DNA amplification. In a preferred embodiment, the presently disclosed methods are used for high-throughput genotyping of DNA samples, such as bloodstains or trace amounts of DNA.
    Type: Application
    Filed: April 27, 2007
    Publication date: June 5, 2008
    Applicant: Invitrogen Corporation
    Inventors: Wan Ji, Keqin Gregg, Bonnie Reus, Jon Kemppainen, Kristen Taylor, Scott Davis
  • Publication number: 20060246503
    Abstract: The present disclosure relates to methods of DNA amplification with a first primer that has a random sequence of nucleotides at its 3? end and a generic sequence 5? of the random nucleotides, as well as a second primer with the generic sequence of the first primer. The disclosure further relates to a method of precipitating DNA on a solid medium to improve DNA amplification. In a preferred embodiment, the presently disclosed methods are used for high-throughput genotyping of DNA samples, such as bloodstains or trace amounts of DNA.
    Type: Application
    Filed: July 10, 2006
    Publication date: November 2, 2006
    Inventors: Wan Ji, Keqin Gregg, Bonnie Reus, Jon Kemppainen, Kristen Taylor, Scott Davis
  • Publication number: 20050009015
    Abstract: A method and associated compositions for the relative quantification of nucleic acid on an address-defined surface, involving fitting the nucleic acid with a generic oligonucleotide, and hybridizing the generic oligonucleotide with a directly or indirectly labeled complementary oligonucleotide. The method is applicable, for example, to SNP genotyping and gene expression analysis.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 13, 2005
    Inventors: Wan Ji, Keqin Gregg, Bonnie Reus, Jon Kemppainen, Scott Davis
  • Publication number: 20040043416
    Abstract: The present disclosure relates to methods of DNA amplification with a first primer that has a random sequence of nucleotides at its 3′ end and a generic sequence 5′ of the random nucleotides, as well as a second primer with the generic sequence of the first primer. The disclosure further relates to a method of precipitating DNA on a solid medium to improve DNA amplification. In a preferred embodiment, the presently disclosed methods are used for high-throughput genotyping of DNA samples, such as bloodstains or trace amounts of DNA.
    Type: Application
    Filed: September 26, 2003
    Publication date: March 4, 2004
    Applicant: Invitrogen Corporation
    Inventors: Wan Ji, Keqin Gregg, Bonnie Reus, Jon Kemppainen, Kristen Taylor, Scott Davis
  • Patent number: 6638722
    Abstract: The present disclosure relates to methods of DNA amplification with a first primer that has a random sequence of nucleotides at its 3′ end and a generic sequence 5′ of the random nucleotides, as well as a second primer with the generic sequence of the first primer. The disclosure further relates to a method of precipitating DNA on a solid medium to improve DNA amplification. In a preferred embodiment, the presently disclosed methods are used for high-throughput genotyping of DNA samples, such as bloodstains or trace amounts of DNA.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: October 28, 2003
    Assignee: Invitrogen Corporation
    Inventors: Wan Ji, Keqin Gregg, Bonnie Reus, Jon Kemppainen, Kristen Taylor, Scott Davis
  • Publication number: 20030108870
    Abstract: The present disclosure relates to methods of DNA amplification with a first primer that has a random sequence of nucleotides at its 3′ end and a generic sequence 5′ of the random nucleotides, as well as a second primer with the generic sequence of the first primer. The disclosure further relates to a method of precipitating DNA on a solid medium to improve DNA amplification. In a preferred embodiment, the presently disclosed methods are used for high-throughput genotyping of DNA samples, such as bloodstains or trace amounts of DNA.
    Type: Application
    Filed: June 13, 2001
    Publication date: June 12, 2003
    Inventors: Wan Ji, Keqin Gregg, Bonnie Reus, Jon Kemppainen, Kristen Taylor, Scott Davis
  • Patent number: 5985650
    Abstract: The invention relates to the discovery that the rate of reaction of the desulfurization of fossil fuels is enhanced by the addition of a flavoprotein to the biocatalyst. The invention is drawn to a method for enhancing the rate of desulfurizing a fossil fuel containing organic sulfur compounds, comprising the steps of:a) contacting the fossil fuel with an aqueous phase containing a biocatalyst capable of cleaving carbon-sulfur bonds and a rate-enhancing amount of a flavoprotein, thereby forming a fossil fuel and aqueous phase mixture;b) maintaining the mixture of step (a) under conditions sufficient for cleavage of the carbon-sulfur bonds of the organic sulfur molecules by the biocatalyst, thereby resulting in a fossil fuel having a reduced organic sulfur content; andc) separating the fossil fuel having a reduced organic sulfur content from the resulting aqueous phase.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: November 16, 1999
    Assignee: Energy BioSystems Corporation
    Inventors: Charles H. Squires, Wan Ji, Lei Xi, Beatrice C. Ortego, Olga S. Pogrebinsky, Kevin A. Gray, John D. Childs
  • Patent number: 5733773
    Abstract: The invention relates to the discovery that the rate of reaction of the desulfurization of fossil fuels is enhanced by the addition of a flavoprotein to the biocatalyst. The invention is drawn to a method for enhancing the rate of desulfurizing a fossil fuel containing organic sulfur compounds, comprising the steps of:a) contacting the fossil fuel with an aqueous phase containing a biocatalyst capable of cleaving carbon-sulfur bonds and a rate-enhancing amount of a flavoprotein, thereby forming a fossil fuel and aqueous phase mixture;b) maintaining the mixture of step (a) under conditions sufficient for cleavage of the carbon-sulfur bonds of the organic sulfur molecules by the biocatalyst, thereby resulting in a fossil fuel having a reduced organic sulfur content; andc) separating the fossil fuel having a reduced organic sulfur content from the resulting aqueous phase.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: March 31, 1998
    Assignee: Energy BioSystems Corporation
    Inventors: Charles H. Squires, Wan Ji, Lei Xi, Beatrice C. Ortego, Olga S. Pogrebinsky, Kevin A. Gray, John D. Childs
  • Patent number: 5321111
    Abstract: A method for extracting polyisoprenes from cells, comprising the steps of contacting the cells with an organic protein-denaturing compound, rupturing the cells to release the polyisoprene from the cells and recovering the polyisoprene. The preferred protein denaturing compound comprises an aqueous solution of a guanidine salt.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: June 14, 1994
    Inventor: Wan Ji