Patents by Inventor J. Ranjan Perera

J. Ranjan Perera 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).

  • Polynucleotide sequences from rice
    Patent number: 7232940
    Abstract: The present invention provides polynucleotides isolated from eucaryotic organisms which are structural genes or promoters. Such isolated polynucleotides are particularly useful in the modification of gene expression in plants. This invention also relates to compositions isolated from plants and their use in the modification of gene activation and/or expression. In a specific embodiment, the subject invention provides plant polynucleotide sequences encoding promoters that are components of the cellular activation and transcription apparatus and the use of such polynucleotide sequences in the modification of expression of genes.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: June 19, 2007
    Assignee: Missouri Board of Curators
    Inventors: J. Ranjan Perera, Min Lu, Animesh Ray
  • Removal of selectable markers from transformed cells
    Publication number: 20030154518
    Abstract: The subject application provides methods and materials useful for the transformation of eukaryotic cells, particularly plant cells. More specifically, the subject invention provides materials and methods for eliminating selectable marker genes from transformed cells. In a preferred embodiment the subject invention provides methods for removing both positive and negative selectable marker genes from plant cells after a gene of interest has been introduced into the plant cells. The methods of the subject invention are applicable to any gene of interest, in any plant species that can be transformed.
    Type: Application
    Filed: June 12, 2001
    Publication date: August 14, 2003
    Inventors: Ethan R. Signer, J. Ranjan Perera
  • Compositions and methods for the modification of gene expression
    Patent number: 6596925
    Abstract: Novel isolated plant polynucleotide promoter sequences are provided, together with genetic constructs comprising such polynucleotides. Methods for using such constructs in modulating the transcription of DNA sequences of interest are also disclosed, together with transgenic plants comprising such constructs.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: July 22, 2003
    Assignees: Genesis Research & Development Corp. Ltd., Rubicon Forests Holdings Ltd.
    Inventors: J. Ranjan Perera, Clare Eagleton, Stephen J. Rice
  • Polynucleotide sequences from rice
    Publication number: 20030131385
    Abstract: The present invention provides polynucleotides isolated from eucaryotic organisms which are structural genes or promoters. Such isolated polynucleotides are particularly useful in the modification of gene expression in plants. This invention also relates to compositions isolated from plants and their use in the modification of gene activation and/or expression. In a specific embodiment, the subject invention provides plant polynucleotide sequences encoding promoters that are components of the cellular activation and transcription apparatus and the use of such polynucleotide sequences in the modification of expression of genes.
    Type: Application
    Filed: March 17, 2003
    Publication date: July 10, 2003
    Inventors: J. Ranjan Perera, Min Lu, Animesh Ray
  • Polynucleotide sequences from rice
    Patent number: 6544783
    Abstract: The present invention provides polynucleotides isolated from eucaryotic organisms which are structural genes or promoters. Such isolated polynucleotides are particularly useful in the modification of gene expression in plants. This invention also relates to compositions isolated from plants and their use in the modification of gene activation and/or expression. In a specific embodiment, the subject invention provides plant polynucleotide sequences enconding promoters that are components of the cellular activation and transcription apparatus and the use of such polynucleotide sequences in the modification of expression of genes.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: April 8, 2003
    Inventors: J. Ranjan Perera, Min Lu, Animesh Ray
  • Compositions and methods for the modification of gene expression
    Patent number: 6380459
    Abstract: Novel isolated plant polynucleotide promoter sequences are provided, together with DNA constructs comprising such polynucleotides. Methods for using such constructs in modulating the transcription of DNA sequences of interest are also disclosed, together with transgenic plants comprising such constructs.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: April 30, 2002
    Assignees: Genesis Research & Development Corporation Ltd., Fletcher Challenge Forests Ltd.
    Inventors: J. Ranjan Perera, Stephen J. Rice