Patents by Inventor Randall W. Davis
Randall W. Davis 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).
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Publication number: 20230416813Abstract: This disclosure provides a biochip comprising a plurality of wells. The biochip includes a membrane that is disposed in or adjacent to an individual well of the plurality of wells. The membrane comprises a nanopore, and the individual well comprises an electrode that detects a signal upon ionic flow through the pore in response to a species passing through or adjacent to the nanopore. The electrode can be a non-sacrificial electrode. A lipid bilayer can be formed over the plurality of wells using a bubble.Type: ApplicationFiled: June 19, 2023Publication date: December 28, 2023Applicant: Roche Sequencing Solutions, Inc.Inventors: Randall W. Davis, Edward Shian Liu, Eric Takeshi Harada, Anne Aguirre, Andrew Trans, James Pollard, Cynthia Cech
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Patent number: 11802276Abstract: Disclosed are methods for isolating polymerase complexes from a mixture of polymerase complex components. The polymerase complexes can comprise a nanopore to provide isolated nanopore sequencing complexes. The methods relate to the positive and negative isolation of the polymerase complexes and/or nanopore sequencing complexes. Also disclosed is a nucleic acid adaptor for isolating active polymerase complexes, polymerase complexes comprising the nucleic acid adaptor, and methods for isolating active polymerase complexes using the nucleic acid adaptor.Type: GrantFiled: May 24, 2018Date of Patent: October 31, 2023Assignee: Roche Sequencing Solutions, Inc.Inventors: Helen Franklin, Cynthia Cech, Timothy Kellogg Craig, Aruna Ayer, Kirti Dhiman, Natalie B. Chechelski Johnston, Joshua N. Mabry, Arkadiusz Bibillo, Peter Crisalli, Randall W. Davis
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Patent number: 11746337Abstract: Disclosed are methods for isolating polymerase complexes from a mixture of polymerase complex components. The polymerase complexes can comprise a nanopore to provide isolated nanopore sequencing complexes. The methods relate to the positive and negative isolation of the polymerase complexes and/or nanopore sequencing complexes. Also disclosed is a nucleic acid adaptor for isolating active polymerase complexes, polymerase complexes comprising the nucleic acid adaptor, and methods for isolating active polymerase complexes using the nucleic acid adaptor.Type: GrantFiled: May 11, 2020Date of Patent: September 5, 2023Assignee: Roche Sequencing Solutions, Inc.Inventors: Helen Franklin, Cynthia Cech, Timothy Kellogg Craig, Aruna Ayer, Kirti Dhiman, Natalie B. Chechelski Johnston, Joshua N. Mabry, Arkadiusz Bibillo, Peter Crisalli, Randall W. Davis
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Patent number: 11725236Abstract: This disclosure provides a biochip comprising a plurality of wells. The biochip includes a membrane that is disposed in or adjacent to an individual well of the plurality of wells. The membrane comprises a nanopore, and the individual well comprises an electrode that detects a signal upon ionic flow through the pore in response to a species passing through or adjacent to the nanopore. The electrode can be a non-sacrificial electrode. A lipid bilayer can be formed over the plurality of wells using a bubble.Type: GrantFiled: April 27, 2021Date of Patent: August 15, 2023Inventors: Randall W. Davis, Edward Shian Liu, Eric Takeshi Harada, Anne Aguirre, Andrew Trans, James Pollard, Cynthia Cech
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Patent number: 11667966Abstract: The present invention relates to a method of using nanopores to obtain sequence information of sample DNAs in ss test DNAs. The method comprises using speed bumps to stall the ss test DNAs in the nanopores at random positions of the ss test DNAs to obtain sequence information of each and every nucleotides of the sample DNAs, and to construct the whole sequences of the sample DNAs. The present invention also relates to identification and/or isolation of test DNAs having desired sequence(s) using nanopore detectors facilitated by speed bump.Type: GrantFiled: January 11, 2021Date of Patent: June 6, 2023Assignee: Roche Sequencing Solutions, Inc.Inventors: Randall W. Davis, Roger J. A. Chen
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Publication number: 20230074210Abstract: Sequencing adaptors and methods are provided for preparation of polynucleotides for sequencing. The sequencing adaptors contain a portion of a recognition sequence for a methyl-dependent endonuclease. Unwanted adaptor dimers that form during ligation of adaptors to target polynucleotides produce a complete restriction sequence and are cleaved by the endonuclease, followed by exonuclease digestion, thereby removing the dimers.Type: ApplicationFiled: October 26, 2022Publication date: March 9, 2023Inventors: Arkadiusz Bibillo, Randall W. Davis
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Patent number: 11525124Abstract: Disclosed are methods for isolating polymerase complexes from a mixture of polymerase complex components. The polymerase complexes can comprise a nanopore to provide isolated nanopore sequencing complexes. The methods relate to the positive and negative isolation of the polymerase complexes and/or nanopore sequencing complexes. Also disclosed is a nucleic acid adaptor for isolating active polymerase complexes, polymerase complexes comprising the nucleic acid adaptor, and methods for isolating active polymerase complexes using the nucleic acid adaptor.Type: GrantFiled: May 11, 2020Date of Patent: December 13, 2022Assignee: Roche Sequencing Solutions, Inc.Inventors: Helen Franklin, Cynthia Cech, Timothy Kellogg Craig, Aruna Ayer, Kirti Dhiman, Natalie B. Chechelski Johnston, Joshua N. Mabry, Arkadiusz Bibillo, Peter Crisalli, Randall W. Davis
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Patent number: 11519026Abstract: Sequencing adaptors and methods are provided for preparation of polynucleotides for sequencing. The sequencing adaptors contain a portion of a recognition sequence for a methyl-dependent endonuclease. Unwanted adaptor dimers that form during ligation of adaptors to target polynucleotides produce a complete restriction sequence and are cleaved by the endonuclease, followed by exonuclease digestion, thereby removing the dimers.Type: GrantFiled: January 31, 2019Date of Patent: December 6, 2022Assignee: Roche Sequencing Solutions, inc.Inventors: Arkadiusz Bibillo, Randall W. Davis
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Patent number: 11499190Abstract: This disclosure provides chips, systems and methods for sequencing a nucleic acid sample. Tagged nucleotides are provided into a reaction chamber comprising a nanopore in a membrane. An individual tagged nucleotide of the tagged nucleotides can contain a tag coupled to a nucleotide, which tag is detectable with the aid of the nanopore. Next, an individual tagged nucleotide of the tagged nucleotides can be incorporated into a growing strand complementary to a single stranded nucleic acid molecule derived from the nucleic acid sample. With the aid of the nanopore, a tag associated with the individual tagged nucleotide can be detected upon incorporation of the individual tagged nucleotide. The tag can be detected with the aid of the nanopore when the tag is released from the nucleotide.Type: GrantFiled: May 29, 2020Date of Patent: November 15, 2022Assignee: Roche Sequencing Solutions, Inc.Inventors: Randall W. Davis, Roger J. A. Chen, Arkadiusz Bibillo, Daniel Korenblum
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Publication number: 20210324462Abstract: This disclosure provides a biochip comprising a plurality of wells. The biochip includes a membrane that is disposed in or adjacent to an individual well of the plurality of wells. The membrane comprises a nanopore, and the individual well comprises an electrode that detects a signal upon ionic flow through the pore in response to a species passing through or adjacent to the nanopore. The electrode can be a non-sacrificial electrode. A lipid bilayer can be formed over the plurality of wells using a bubble.Type: ApplicationFiled: April 27, 2021Publication date: October 21, 2021Applicant: Roche Sequencing Solutions, Inc.Inventors: Randall W. DAVIS, Edward Shian LIU, Eric Takeshi HARADA, Anne AGUIRRE, Andrew TRANS, James POLLARD, Cynthia CECH
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Publication number: 20210207212Abstract: The present invention relates to a method of using nanopores to obtain sequence information of sample DNAs in ss test DNAs. The method comprises using speed bumps to stall the ss test DNAs in the nanopores at random positions of the ss test DNAs to obtain sequence information of each and every nucleotides of the sample DNAs, and to construct the whole sequences of the sample DNAs. The present invention also relates to identification and/or isolation of test DNAs having desired sequence(s) using nanopore detectors facilitated by speed bump.Type: ApplicationFiled: January 11, 2021Publication date: July 8, 2021Applicant: Roche Sequencing Solutions, Inc.Inventors: Randall W. DAVIS, Roger J.A. CHEN
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Patent number: 11021745Abstract: This disclosure provides a biochip comprising a plurality of wells. The biochip includes a membrane that is disposed in or adjacent to an individual well of the plurality of wells. The membrane comprises a nanopore, and the individual well comprises an electrode that detects a signal upon ionic flow through the pore in response to a species passing through or adjacent to the nanopore. The electrode can be a non-sacrificial electrode. A lipid bilayer can be formed over the plurality of wells using a bubble.Type: GrantFiled: February 11, 2019Date of Patent: June 1, 2021Assignee: Roche Sequencing Solutions, Inc.Inventors: Randall W. Davis, Edward Shian Liu, Eric Takeshi Harada, Anne Aguirre, Andrew Trans, James Pollard, Cynthia Cech
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Patent number: 10920271Abstract: The present invention relates to a method of using nanopores to obtain sequence information of sample DNAs in ss test DNAs. The method comprises using speed bumps to stall the ss test DNAs in the nanopores at random positions of the ss test DNAs to obtain sequence information of each and every nucleotides of the sample DNAs, and to construct the whole sequences of the sample DNAs. The present invention also relates to identification and/or isolation of test DNAs having desired sequence(s) using nanopore detectors facilitated by speed bump.Type: GrantFiled: April 17, 2019Date of Patent: February 16, 2021Inventors: Randall W. Davis, Roger J. A. Chen
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Publication number: 20200407786Abstract: This disclosure provides chips, systems and methods for sequencing a nucleic acid sample. Tagged nucleotides are provided into a reaction chamber comprising a nanopore in a membrane. An individual tagged nucleotide of the tagged nucleotides can contain a tag coupled to a nucleotide, which tag is detectable with the aid of the nanopore. Next, an individual tagged nucleotide of the tagged nucleotides can be incorporated into a growing strand complementary to a single stranded nucleic acid molecule derived from the nucleic acid sample. With the aid of the nanopore, a tag associated with the individual tagged nucleotide can be detected upon incorporation of the individual tagged nucleotide. The tag can be detected with the aid of the nanopore when the tag is released from the nucleotide.Type: ApplicationFiled: May 29, 2020Publication date: December 31, 2020Inventors: Randall W. Davis, Roger J.A. Chen, Arkadiusz Bibillo, Daniel Korenblum
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Publication number: 20200277581Abstract: Disclosed are methods for isolating polymerase complexes from a mixture of polymerase complex components. The polymerase complexes can comprise a nanopore to provide isolated nanopore sequencing complexes. The methods relate to the positive and negative isolation of the polymerase complexes and/or nanopore sequencing complexes. Also disclosed is a nucleic acid adaptor for isolating active polymerase complexes, polymerase complexes comprising the nucleic acid adaptor, and methods for isolating active polymerase complexes using the nucleic acid adaptor.Type: ApplicationFiled: May 11, 2020Publication date: September 3, 2020Applicant: Roche Sequencing Solutions, Inc.Inventors: Helen FRANKLIN, Cynthia CECH, Timothy Kellogg CRAIG, Aruna AYER, Kirti DHIMAN, Natalie B. CHECHELSKI JOHNSTON, Joshua N. MABRY, Arkadiusz BIBILLO, Peter CRISALLI, Randall W. DAVIS
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Publication number: 20200270589Abstract: Disclosed are methods for isolating polymerase complexes from a mixture of polymerase complex components. The polymerase complexes can comprise a nanopore to provide isolated nanopore sequencing complexes. The methods relate to the positive and negative isolation of the polymerase complexes and/or nanopore sequencing complexes. Also disclosed is a nucleic acid adaptor for isolating active polymerase complexes, polymerase complexes comprising the nucleic acid adaptor, and methods for isolating active polymerase complexes using the nucleic acid adaptor.Type: ApplicationFiled: May 11, 2020Publication date: August 27, 2020Applicant: ROCHE SEQUENCING SOLUTIONS, INC.Inventors: Helen FRANKLIN, Cynthia CECH, Timothy Kellogg CRAIG, Aruna AYER, Kirti DHIMAN, Natalie B. CHECHELSKI JOHNSTON, Joshua N. MABRY, Arkadiusz BIBILLO, Peter CRISALLI, Randall W. DAVIS
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Publication number: 20190382833Abstract: This disclosure provides chips, systems and methods for sequencing a nucleic acid sample. Tagged nucleotides are provided into a reaction chamber comprising a nanopore in a membrane. An individual tagged nucleotide of the tagged nucleotides can contain a tag coupled to a nucleotide, which tag is detectable with the aid of the nanopore. Next, an individual tagged nucleotide of the tagged nucleotides can be incorporated into a growing strand complementary to a single stranded nucleic acid molecule derived from the nucleic acid sample. With the aid of the nanopore, a tag associated with the individual tagged nucleotide can be detected upon incorporation of the individual tagged nucleotide. The tag can be detected with the aid of the nanopore when the tag is released from the nucleotide.Type: ApplicationFiled: December 20, 2017Publication date: December 19, 2019Inventors: Randall W. Davis, Roger J.A. Chen, Arkadiusz Bibillo, Daniel Korenblum
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Patent number: 10400278Abstract: The present invention relates to a method of using nanopores to obtain sequence information of sample DNAs in ss test DNAs. The method comprises using speed bumps to stall the ss test DNAs in the nanopores at random positions of the ss test DNAs to obtain sequence information of each and every nucleotides of the sample DNAs, and to construct the whole sequences of the sample DNAs. The present invention also relates to identification and/or isolation of test DNAs having desired sequence(s) using nanopore detectors facilitated by speed bump.Type: GrantFiled: February 16, 2017Date of Patent: September 3, 2019Assignee: Genia Technologies, Inc.Inventors: Randall W Davis, Roger J. A. Chen
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Publication number: 20190264275Abstract: The present invention relates to a method of using nanopores to obtain sequence information of sample DNAs in ss test DNAs. The method comprises using speed bumps to stall the ss test DNAs in the nanopores at random positions of the ss test DNAs to obtain sequence information of each and every nucleotides of the sample DNAs, and to construct the whole sequences of the sample DNAs. The present invention also relates to identification and/or isolation of test DNAs having desired sequence(s) using nanopore detectors facilitated by speed bump.Type: ApplicationFiled: April 17, 2019Publication date: August 29, 2019Applicant: GENIA TECHNOLOGIES, INC.Inventors: Randall W. DAVIS, Roger J.A. CHEN
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Publication number: 20190185927Abstract: This disclosure provides a biochip comprising a plurality of wells. The biochip includes a membrane that is disposed in or adjacent to an individual well of the plurality of wells. The membrane comprises a nanopore, and the individual well comprises an electrode that detects a signal upon ionic flow through the pore in response to a species passing through or adjacent to the nanopore. The electrode can be a non-sacrificial electrode. A lipid bilayer can be formed over the plurality of wells using a bubble.Type: ApplicationFiled: February 11, 2019Publication date: June 20, 2019Applicant: Genia Technologies, Inc.Inventors: Randall W. DAVIS, Edward Shian LIU, Eric Takeshi HARADA, Anne AGUIRRE, Andrew TRANS, James POLLARD, Cynthia CECH