Patents by Inventor Dharma Teja Varapula

Dharma Teja Varapula 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).

  • Patent number: 11986820
    Abstract: Methods that integrates processing and an analysis of a sample are disclosed and include use of a testing device that integrates nucleic acid isolation, isothermal amplification and detection wherein a sample and reagents are transported through a capture/binding membrane by capillary forces and the positioning of a slidebar that supports said binding membrane. In the practice of the methods, flow control and fluid actuation are effected by the position of a slidebar of the device which makes a fluidic connection through the capture membrane situated between a reservoir of liquid on the device and an absorbing pad, and where a sequence of operations for sample loading, washing, optionally amplification, and optical detection of analytes can be done conveniently and rapidly at the point of care.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 21, 2024
    Inventors: Michael G. Mauk, Dharma Teja Varapula, Sirisha Phanithra Gutta
  • Publication number: 20210039094
    Abstract: A testing device that integrates nucleic acid isolation, isothermal amplification and detection wherein a sample and reagents are transported through a capture/binding membrane by capillary forces and the positioning of a slidebar that supports said binding membrane. Flow control and fluid actuation are effected by the position of said slidebar which makes a fluidic connection through the capture membrane situated between. a reservoir of liquid on the device and an absorbing pad, and where a sequence of operations for sample loading, washing, optionally amplification, and optical detection of analytes can be done conveniently and rapidly at the point of care. With minimal operator interaction, this device can lyse, isolate, amplify, and detect nucleic acids from clinical specimens and environmental samples.
    Type: Application
    Filed: March 16, 2020
    Publication date: February 11, 2021
    Inventors: Michael G. Mauk, Dharma Teja Varapula, Sirisha Phanithra Gutta
  • Publication number: 20210033606
    Abstract: The present invention provides novel methods for immobilizing and/or optically mapping oligonucleotides, the method comprising immobilizing the oligonucleotides on a micropatterned substrate. In another aspect, the invention provides a method for mapping a genome, wherein the method is capable of resolving a single nucleotide polymorphism (SNP), the method comprising introducing to the genome a CRISPR/Cas9 system comprising at least one single-guide RNA (sgRNA) specific for a target sequence or a plurality of target sequences across the genome and a Cas9 D10A, wherein the CRISPR/Cas9 system nick labels the target sequence, and the target sequence or genome is analyzed.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 4, 2021
    Inventors: Ming Xiao, Dharma Teja Varapula, Eric Michael LaBouff, Moses Noh
  • Patent number: 10596566
    Abstract: A testing device that integrates nucleic acid isolation, isothermal amplification and detection wherein a sample and reagents are transported through a capture/binding membrane by capillary forces and the positioning of a slidebar that supports said binding membrane. Flow control and fluid actuation are effected by the position of said slidebar which makes a fluidic connection through the capture membrane situated between a reservoir of liquid on the device and an absorbing pad, and where a sequence of operations for sample loading, washing, optionally amplification, and optical detection of analytes can be done conveniently and rapidly at the point of care. With minimal operator interaction, this device can lyse, isolate, amplify, and detect nucleic acids from clinical specimens and environmental samples.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 24, 2020
    Assignee: Mauk et al.
    Inventors: Michael G. Mauk, Dharma Teja Varapula, Sirisha Phanithra Gutta
  • Publication number: 20180193834
    Abstract: A testing device that integrates nucleic acid isolation, isothermal amplification and detection wherein a sample and reagents are transported through a capture/binding membrane by capillary forces and the positioning of a slidebar that supports said binding membrane. Flow control and fluid actuation are effected by the position of said slidebar which makes a fluidic connection through the capture membrane situated between a reservoir of liquid on the device and an absorbing pad, and where a sequence of operations for sample loading, washing, optionally amplification, and optical detection of analytes can be done conveniently and rapidly at the point of care. With minimal operator interaction, this device can lyse, isolate, amplify, and detect nucleic acids from clinical specimens and environmental samples.
    Type: Application
    Filed: April 17, 2017
    Publication date: July 12, 2018
    Inventors: Michael G. Mauk, Dharma Teja Varapula, Sirisha Phanithra Gutta