Patents by Inventor Zehui Cao

Zehui Cao 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: 20180284124
    Abstract: A method for capture and release of mass labels whereby a mass label is attached to rare molecule by electrochemical oxidation and released by electrochemical reduction, whereby, the mass label and rare molecule are removed from the sample by affinity binding and the mass label with or without rare molecule are released by electrochemical reduction. The method allows isolation and detection of one or more different populations of rare molecules in a sample suspected of containing one or more different populations of rare molecules and non-rare molecules. Bond breakage or bond formation of mass labels occurs by an electrochemical reaction in porous matrix placed between an anode and cathode electrode in a thin layer electrochemical reactor. Capture and release of mass labels by electrochemical reduction or oxidation wherein the chemical alteration agents are not used.
    Type: Application
    Filed: April 1, 2018
    Publication date: October 4, 2018
    Inventors: Michael Joseph Pugia, Zane Baird, Zehui Cao
  • Publication number: 20180283998
    Abstract: The invention provides a method of releasing a liquid from a porous matrix having at least one pore to a microfluidic surface having at least one liquid volume area and at least one exit hole, comprising: (a) filtering said liquid through said porous matrix; (b) removing said porous matrix and sealing the microfluidic surface having a liquid volume area; (c) releasing said liquid from the liquid volume area through the exit hole of the microfluidic surface by application of a dynamic force; and (d) collecting said liquid into a liquid receiving area. Additionally, there is provided an apparatus useful for processing liquid samples undergoing analytical assays which includes (a) a filtering device having a porous matrix affixed to a support structure; (b) a microfluidic surface having a liquid volume area and an exit hole connected to said filtering device; and (c) a liquid receiving area attached to said microfluidic surface.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 4, 2018
    Inventors: Mike Joseph Pugia, Zane Baird, Zehui Cao
  • Publication number: 20180282786
    Abstract: Methods are provided for the selective isolation, amplification and detection of nucleic acids from samples, said method comprising: (a) enriching selectively said nucleic acids present in said samples on a binding matrix; (b) releasing said nucleic acids from the binding matrix; (c) selectively amplifying said nucleic acids; and (d) analysing said amplified nucleic acids.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 4, 2018
    Inventors: Michael Joseph Pugia, Zane Baird, Zehui Cao
  • Patent number: 10087492
    Abstract: The present disclosure provides a system and methods for detecting and identifying plant events that contain donor sequences inserted precisely into a targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method comprises the steps of amplifying a genomic DNA with a first round of PCR to produce an amplicon from donor sequences inserted in the reverse orientation, wherein the production of the amplicon indicates the presence of the site specific integration event.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: October 2, 2018
    Assignee: Dow AgroSciences LLC
    Inventors: Lakshmi Sastry-Dent, W. Michael Ainley, Jayakumar P. Samuel, Zehui Cao, Liu Shen, Cristie M. Dewes
  • Patent number: 10077449
    Abstract: A universal donor polynucleotide is described that can be inserted at targeted locations in plant genomes to facilitate rapid and high throughput integration of a donor molecule within a specific genomic location.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 18, 2018
    Assignee: Dow AgroSciences LLC
    Inventors: Lakshmi Sastry-Dent, Steven L. Evans, Ryan C. Blue, Zehui Cao
  • Publication number: 20180142250
    Abstract: As disclosed herein, optimal native genomic loci of soybean plants have been identified that represent best sites for targeted insertion of exogenous sequences.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 24, 2018
    Inventors: Lakshmi SASTRY-DENT, Zehui CAO, Shreedharan SRIRAM, Steven R. WEBB, Debra L. CAMPER, W. Michael AINLEY
  • Patent number: 9909131
    Abstract: As disclosed herein, optimal native genomic loci of soybean plants have been identified that represent best sites for targeted insertion of exogenous sequences.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: March 6, 2018
    Assignee: Dow AgroSciences LLC
    Inventors: Lakshmi Sastry-Dent, Zehui Cao, Shreedharan Sriram, Steven R. Webb, Debra L. Camper, W. Michael Ainley
  • Publication number: 20180010200
    Abstract: The present disclosure provides a system and methods for detecting and identifying plant events that contain donor sequences inserted precisely into a targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method comprises the steps of amplifying a genomic DNA with a first round of PCR to produce an amplicon from donor sequences inserted in the reverse orientation, wherein the production of the amplicon indicates the presence of the site specific integration event.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 11, 2018
    Inventors: Lakshmi SASTRY-DENT, W. Michael AINLEY, Jayakumar P. SAMUEL, Zehui CAO, Liu SHEN, Cristie M. DEWES
  • Publication number: 20170283865
    Abstract: The present disclosure provides methods for detecting and identifying plant events that contain precision targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method can be deployed as a high throughput process utilized for screening the intactness or disruption of a targeted genomic loci and optionally for detecting a donor DNA polynucleotide insertion at the targeted genomic loci. The methods are readily applicable for the identification of plant events produced via a targeting method which results from the use of a site specific nuclease.
    Type: Application
    Filed: August 29, 2016
    Publication date: October 5, 2017
    Applicant: Dow AgroSciences LLC
    Inventors: Lakshmi Sastry-Dent, Matthew A. Simpson, Zehui Cao, Wei Chen, Ning Zhou, Steven R. Webb
  • Patent number: 9765404
    Abstract: The present disclosure provides methods for detecting and identifying plant events that contain donor sequences inserted precisely into targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method comprises the steps of amplifying a genomic DNA with a first round of PCR to produce a first amplicon from donor sequences inserted in the reverse orientation, amplifying the first amplicon with a second round of PCR and detecting the presence of the second amplicon, wherein the production of the first and second amplicon indicates the presence of the site specific integration event.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: September 19, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Lakshmi Sastry-Dent, W. Michael Ainley, Jayakumar P. Samuel, Zehui Cao, Liu Y. Shen, Cristie M. Dewes
  • Patent number: 9493844
    Abstract: The present disclosure provides methods for detecting and identifying plant events that contain precision targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method can be deployed as a high throughput process utilized for screening the intactness or disruption of a targeted genomic loci and optionally for detecting a donor DNA polynucleotide insertion at the targeted genomic loci. The methods are readily applicable for the identification of plant events produced via a targeting method which results from the use of a site specific nuclease.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: November 15, 2016
    Assignee: Dow AgroSciences LLC
    Inventors: Lakshmi Sastry-Dent, Matthew Simpson, Zehui Cao, Wei Chen, Ning Zhou, Steven R. Webb
  • Publication number: 20150143588
    Abstract: A universal donor polynucleotide is described that can be inserted at targeted locations in plant genomes to facilitate rapid and high throughput integration of a donor molecule within a specific genomic location.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 21, 2015
    Inventors: Lakshmi SASTRY-DENT, Steven L. EVANS, Ryan C. BLUE, Zehui CAO
  • Publication number: 20150128310
    Abstract: As disclosed herein, optimal native genomic loci from maize plants have been identified that represent best sites for targeted insertion of exogenous sequences.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Lakshmi SASTRY-DENT, Zehui CAO, Shreedharan SRIRAM, Steven R. WEBB, Debra L. CAMPER
  • Publication number: 20150128307
    Abstract: As disclosed herein, optimal native genomic loci have been identified in dicot plants, such as soybean plants, that represent best sites for targeted insertion of exogenous sequences.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Lakshmi SASTRY-DENT, Zehui CAO, Shreedharan SRIRAM, Steven R. WEBB, Debra L. CAMPER
  • Publication number: 20150128308
    Abstract: As disclosed herein, optimal native genomic loci of soybean plants have been identified that represent best sites for targeted insertion of exogenous sequences.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Lakshmi SASTRY-DENT, Zehui CAO, Shreedharan SRIRAM, Steven R. WEBB, Debra L. CAMPER, W. Michael AINLEY
  • Publication number: 20150128309
    Abstract: As disclosed herein, optimal native genomic loci have been identified in monocot plants, such as maize plants, that represent best sites for targeted insertion of exogenous sequences.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Lakshmi SASTRY-DENT, Zehui CAO, Shreedharan SRIRAM, Steven R. WEBB, Debra L. CAMPER, Navin ELANGO
  • Publication number: 20150064708
    Abstract: The present disclosure provides methods for detecting and identifying plant events that contain precision targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method can be deployed as a high throughput process utilized for screening a donor DNA polynucleotide insertion at the targeted genomic loci. The methods are readily applicable for the identification of plant events produced via a targeting method which results from the use of a site specific nuclease.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventors: Lakshmi Sastry-Dent, W. Michael AINLEY, Jayakumar P. SAMUEL, Zehui CAO, Liu Y. SHEN, Cristie M. DEWES
  • Patent number: 8911943
    Abstract: The present invention is a method to identify unknown DNA sequences which flank known DNA sequences. The invention improves the accuracy, sensitivity, and reproducibility for determining unknown DNA sequences which flank a known DNA sequence. This claimed method can be deployed as a high throughput method to quickly and efficiently identify plant genomic chromosomal sequences which flank a transgene. Further analysis of these unknown sequences can be used to characterize the transgene insertion site for the identification of rearrangements, insertions and deletions which result from the integration of the transgene. In addition, analysis of the chromosomal flanking sequences can be used to identify the location of the transgene on the chromosome.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: December 16, 2014
    Assignee: Dow AgroSciences, LLC.
    Inventors: Zehui Cao, Stephen Novak, Ning Zhou
  • Publication number: 20140298547
    Abstract: The present disclosure provides methods for detecting and identifying plant events that contain precision targeted genomic loci, and plants and plant cells comprising such targeted genomic loci. The method can be deployed as a high throughput process utilized for screening the intactness or disruption of a targeted genomic loci and optionally for detecting a donor DNA polynucleotide insertion at the targeted genomic loci. The methods are readily applicable for the identification of plant events produced via a targeting method which results from the use of a site specific nuclease.
    Type: Application
    Filed: December 13, 2013
    Publication date: October 2, 2014
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Lakshmi Sastry-Dent, Matthew Simpson, Zehui Cao, Wei Chen, Ning Zhou, Steven R. Webb
  • Publication number: 20120258867
    Abstract: The present invention is a method to identify unknown DNA sequences which flank known DNA sequences. The invention improves the accuracy, sensitivity, and reproducibility for determining unknown DNA sequences which flank a known DNA sequence. This claimed method can be deployed as a high throughput method to quickly and efficiently identify plant genomic chromosomal sequences which flank a transgene. Further analysis of these unknown sequences can be used to characterize the transgene insertion site for the identification of rearrangements, insertions and deletions which result from the integration of the transgene. In addition, analysis of the chromosomal flanking sequences can be used to identify the location of the transgene on the chromosome.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 11, 2012
    Applicant: DOW AGROSCIENCES LLC
    Inventors: ZEHUI CAO, Stephen Novak, Ning Zhou