Patents by Inventor Afzal Chowdhury

Afzal Chowdhury 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).

  • Compositions and methods for differentiating among species and from species
    Patent number: 7888488
    Abstract: The present invention relates to detecting and distinguishing among bacteria that belong to the species Shigella, including Shigella boydii, Shigella dysenteriae, Shigella flexneri, and Shigella sonnei; and detecting and distinguishing Shigella bacteria from Escherichia coli. In particular, the invention includes provision of species-identifying and genus-identifying nucleotides of 16s rRNA or 16s rDNA from the above named species. Nucleic acid probe molecules capable of differentiating among these species and genera by hybridization, along with methods for their use for specific detection in clinical samples, food samples, environmental samples, and the like are also provided.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: February 15, 2011
    Inventors: Franklin H. Portugal, Rita R. Colwell, Anwarul Huq, Afzal Chowdhury
  • COMPOSITIONS AND METHODS FOR DIFFERENTIATING AMONG SHIGELLA SPECIES AND SHIGELLA FROM E. COLI SPECIES
    Publication number: 20020006611
    Abstract: The present invention relates to detecting and distinguishing among bacteria that belong to the species Shigella, including Shigella boydii, Shigella dysenteriae, Shigella flexneri, and Shigella sonnei; and detecting and distinguishing Shigella bacteria from Escherichia coli. In particular, the invention includes provision of species-identifying and genus-identifying nucleotides of 16s rRNA or 16s rDNA from the above named species. Nucleic acid probe molecules capable of differentiating among these species and genera by hybridization, along with methods for their use for specific detection in clinical samples, food samples, environmental samples, and the like are also provided.
    Type: Application
    Filed: February 20, 1998
    Publication date: January 17, 2002
    Inventors: FRANKLIN H. PORTUGAL, RITA R. COLWELL, ANWARUL HUQ, AFZAL CHOWDHURY
  • Combined sampling-assay device and holder
    Patent number: 5980828
    Abstract: A combined sample-assay device allows sampling and detection within an integrated device. The device is a flat plate-like body with a collection arm. The collection arm optionally folds to enter a recess that flatly supports and seats the arm. The arm may be friction held in this recess and completely enters the recess. Within the recess is a second recess that contains a reading portion and transport portion. Chemiluminescent or other light emitting chemical reagent is placed within the device and light is detected in response to the presence of a sample analyte in a fluid sample.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 9, 1999
    Assignee: Universal Healthwatch, Inc.
    Inventors: Joseph A. McClintock, Afzal Chowdhury, Mary Ann Childs, Gregory K. Shipman, David Bernstein, Uri Reichman, Craig A. Chung
  • Multi-sided medical diagnostic test device
    Patent number: D404830
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: January 26, 1999
    Assignee: Universal Healthwatch, Inc.
    Inventors: Mary Ann Childs, Thomas He, Greg K. Shipman, William Trainor, Erick Gray, Mohammud Afzal Chowdhury, Joseph A. McClintock, David Bernstein
  • Octagonal diagnostic test device
    Patent number: D407825
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: April 6, 1999
    Assignee: Universal Healthwatch, Inc.
    Inventors: Mary Ann Childs, Thomas He, Greg K. Shipman, William Trainor, Erick Gray, Mohammud Afzal Chowdhury, Joseph A. McClintock, David Bernstein