Patents by Inventor Brenda S. Cho

Brenda S. Cho 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: 10227562
    Abstract: Motile particles are sorted from non-motile particles in a microfluidic sorting device wherein a stream of sort fluid containing motile and non-motile particles is caused to flow adjacent a media stream in non-turbulent fashion through a sort channel, during which flow motile particles cross the interface between the adjacent flow streams, entering the media stream, and forming a motile particle-depleted sort stream. The sorting devices are easily and inexpensively fabricated and have numerous uses, in particular sorting of motile from non-motile sperm.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: March 12, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Shuichi Takayama, Gary D. Smith, Timothy G. Schuster, Brenda S. Cho
  • Publication number: 20170137779
    Abstract: Motile particles are sorted from non-motile particles in a microfluidic sorting device wherein a stream of sort fluid containing motile and non-motile particles is caused to flow adjacent a media stream in non-turbulent fashion through a sort channel, during which flow motile particles cross the interface between the adjacent flow streams, entering the media stream, and forming a motile particle-depleted sort stream. The sorting devices are easily and inexpensively fabricated and have numerous uses, in particular sorting of motile from non-motile sperm.
    Type: Application
    Filed: December 14, 2016
    Publication date: May 18, 2017
    Inventors: Shuichi Takayama, Gary D. Smith, Timothy G. Schuster, Brenda S. Cho
  • Patent number: 9523075
    Abstract: Motile particles are sorted from non-motile particles in a microfluidic sorting device wherein a stream of sort fluid containing motile and non-motile particles is caused to flow adjacent a media stream in non-turbulent fashion through a sort channel, during which flow motile particles cross the interface between the adjacent flow streams, entering the media stream, and forming a motile particle-depleted sort stream. The sorting devices are easily and inexpensively fabricated and have numerous uses, in particular sorting of motile from non-motile sperm.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: December 20, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Shuichi Takayama, Gary D. Smith, Timothy G. Schuster, Brenda S. Cho
  • Patent number: 8313941
    Abstract: Microfluidic devices having active features such as valves, peristaltic pumps, and mixing portions are fabricated to have a thin elastomeric membrane over the active features. The active features are activated by a tactile actuator external to the membrane, for example, a commercial Braille display. The display may be computer controlled, for example by simple text editor software, to activate individual Braille protrusions or a plurality of protrusions to actuate the active portions of the microfluidic device. Integral devices can incorporate the tactile actuators in a single device, but still external to the membrane.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: November 20, 2012
    Assignee: The Regents of The University of Michigan
    Inventors: Shuichi Takayama, Xiaoyue Zhu, Wei Gu, Gary Daniel Smith, Yunseok Heo, Brenda S. Cho, Nobuyuki Futai
  • Publication number: 20100233799
    Abstract: Microfluidic devices having active features such as valves, peristaltic pumps, and mixing portions are fabricated to have a thin elastomeric membrane over the active features. The active features are activated by a tactile actuator external to the membrane, for example, a commercial Braille display. The display may be computer controlled, for example by simple text editor software, to activate individual Braille protrusions or a plurality of protrusions to actuate the active portions of the microfluidic device. Integral devices can incorporate the tactile actuators in a single device, but still external to the membrane.
    Type: Application
    Filed: May 20, 2010
    Publication date: September 16, 2010
    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Shuichi Takayama, Xiaoyue Zhu, Wei Gu, Gary Daniel Smith, Yunseok Heo, Brenda S. Cho, Nobuyuki Futai
  • Patent number: 7745211
    Abstract: Microfluidic devices having active features such as valves, peristaltic pumps, and mixing portions are fabricated to have a thin elastomeric membrane over the active features. The active features are activated by a tactile actuator external to the membrane, for example, a commercial Braille display. The display may be computer controlled, for example by simple text editor software, to activate individual Braille protrusions or a plurality of protrusions to actuate the active portions of the microfluidic device. Integral devices can incorporate the tactile actuators in a single device, but still external to the membrane.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: June 29, 2010
    Assignee: The Regents of the University of Michigan
    Inventors: Shuichi Takayama, Xiaoyue Zhu, Wei Gu, Gary Daniel Smith, Yunseok Heo, Brenda S. Cho, Nobuyuki Futai
  • Publication number: 20080187991
    Abstract: Motile particles are sorted from non-motile particles in a microfluidic sorting device wherein a stream of sort fluid containing motile and non-motile particles is caused to flow adjacent a media stream in non-turbulent fashion through a sort channel, during which flow motile particles cross the interface between the adjacent flow streams, entering the media stream, and forming a motile particle-depleted sort stream. The sorting devices are easily and inexpensively fabricated and have numerous uses, in particular sorting of motile from non-motile sperm.
    Type: Application
    Filed: April 2, 2008
    Publication date: August 7, 2008
    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Shuichi Takayama, Gary D. Smith, Timothy G. Schuster, Brenda S. Cho
  • Publication number: 20030165812
    Abstract: Motile particles are sorted from non-motile particles in a microfluidic sorting device wherein a stream of sort fluid containing motile and non-motile particles is caused to flow adjacent a media stream in non-turbulent fashion through a sort channel, during which flow motile particles cross the interface between the adjacent flow streams, entering the media stream, and forming a motile particle-depleted sort stream. The sorting devices are easily and inexpensively fabricated and have numerous uses, in particular sorting of motile from non-motile sperm.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 4, 2003
    Inventors: Shuichi Takayama, Gary D. Smith, Timothy G. Schuster, Brenda S. Cho