Patents by Inventor Venkata Yelleswarapu

Venkata Yelleswarapu 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: 20240238802
    Abstract: A magnetic separation filter has an unsupported magnetically soft material layer having a plurality of pores, and, optionally, a passivation layer disposed on the magnetically soft material layer. The magnetic separation filter may be part of a microfluidic device having a lateral flow channel and a vertical flow magnetic separation filter. The magnetic separation device may be used to separate magnetically tagged particles, such as cells.
    Type: Application
    Filed: August 4, 2023
    Publication date: July 18, 2024
    Inventors: David Issadore, Venkata Yelleswarapu, Jina Ko
  • Patent number: 11786914
    Abstract: A magnetic separation filter has an unsupported magnetically soft material layer having a plurality of pores, and, optionally, a passivation layer disposed on the magnetically soft material layer. The magnetic separation filter may be part of a microfluidic device having a lateral flow channel and a vertical flow magnetic separation filter. The magnetic separation device may be used to separate magnetically tagged particles, such as cells.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: October 17, 2023
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: David Issadore, Venkata Yelleswarapu, Jina Ko
  • Patent number: 11630052
    Abstract: A high-throughput optofluidic device for detecting fluorescent droplets is disclosed. The device uses time-domain encoded optofluidics to detect a high rate of droplets passing through parallel microfluidic channels. A light source modulated with a minimally correlating maximum length sequences is used to illuminate the droplets as they pass through the microfluidic device. By correlating the resulting signal with the expected pattern, each pattern formed by passing droplets can be resolved to identify individual droplets.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: April 18, 2023
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: David A Issadore, Venkata Yelleswarapu
  • Publication number: 20210239593
    Abstract: A high-throughput optofluidic device for detecting fluorescent droplets is disclosed. The device uses time-domain encoded optofluidics to detect a high rate of droplets passing through parallel microfluidic channels. A light source modulated with a minimally correlating maximum length sequences is used to illuminate the droplets as they pass through the microfluidic device. By correlating the resulting signal with the expected pattern, each pattern formed by passing droplets can be resolved to identify individual droplets.
    Type: Application
    Filed: September 11, 2020
    Publication date: August 5, 2021
    Inventors: David A. Issadore, Venkata Yelleswarapu
  • Patent number: 10809176
    Abstract: A high-throughput optofluidic device for detecting fluorescent droplets is disclosed. The device uses time-domain encoded optofluidics to detect a high rate of droplets passing through parallel microfluidic channels. A light source modulated with a minimally correlating maximum length sequences is used to illuminate the droplets as they pass through the microfluidic device. By correlating the resulting signal with the expected pattern, each pattern formed by passing droplets can be resolved to identify individual droplets.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: October 20, 2020
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: David Issadore, Venkata Yelleswarapu
  • Patent number: 10799867
    Abstract: Aspects of the present invention relate to apparatuses for microdroplet generation and methods of manufacturing such apparatuses. In accordance with one aspect, a method for manufacturing a microdroplet generator having a plurality of flow-focusing generators includes forming a cavity between a first plate and a second plate, the second plate being a soft master. The cavity defining the plurality of flow focusing generators, a first plurality of channels, and a second plurality of channels. The method further includes supplying a resin to the cavity, applying pressure to one or both of the first plate or the second plate; and curing the resin.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: October 13, 2020
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: David Aaron Issadore, Daeyeon Lee, Sagar Prasad Yadavali, Venkata Yelleswarapu, Heon-Ho Jeong
  • Publication number: 20190265152
    Abstract: A high-throughput optofluidic device for detecting fluorescent droplets is disclosed. The device uses time-domain encoded optofluidics to detect a high rate of droplets passing through parallel microfluidic channels. A light source modulated with a minimally correlating maximum length sequences is used to illuminate the droplets as they pass through the microfluidic device. By correlating the resulting signal with the expected pattern, each pattern formed by passing droplets can be resolved to identify individual droplets.
    Type: Application
    Filed: October 23, 2017
    Publication date: August 29, 2019
    Inventors: David ISSADORE, Venkata YELLESWARAPU
  • Publication number: 20180297039
    Abstract: A magnetic separation filter has an unsupported magnetically soft material layer having a plurality of pores, and, optionally, a passivation layer disposed on the magnetically soft material layer. The magnetic separation filter may be part of a microfluidic device having a lateral flow channel and a vertical flow magnetic separation filter. The magnetic separation device may be used to separate magnetically tagged particles, such as cells.
    Type: Application
    Filed: October 4, 2016
    Publication date: October 18, 2018
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: David Issadore, Venkata Yelleswarapu, Jina Ko
  • Publication number: 20180236450
    Abstract: Aspects of the present invention relate to apparatuses for microdroplet generation and methods of manufacturing such apparatuses. In accordance with one aspect, a method for manufacturing a microdroplet generator having a plurality of flow-focusing generators includes forming a cavity between a first plate and a second plate, the second plate being a soft master. The cavity defining the plurality of flow focusing generators, a first plurality of channels, and a second plurality of channels. The method further includes supplying a resin to the cavity, applying pressure to one or both of the first plate or the second plate; and curing the resin.
    Type: Application
    Filed: September 23, 2016
    Publication date: August 23, 2018
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: David Issadore, Daeyeon Lee, Sagar Yadavli, Venkata Yelleswarapu, Heon-Ho Jeong