Patents by Inventor Xiaochun Fan

Xiaochun Fan 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: 20240095935
    Abstract: Methods and systems for deep learning alignment for semiconductor applications are provided. One method includes transforming design information for an alignment target on a specimen to a predicted image of the alignment target by inputting the design information into a deep learning model and aligning the predicted image to an image of the alignment target on the specimen generated by an imaging subsystem. The method also includes determining an offset between the predicted image and the image generated by the imaging subsystem based on results of the aligning and storing the determined offset as an align-to-design offset for use in a process performed on the specimen with the imaging subsystem.
    Type: Application
    Filed: March 5, 2023
    Publication date: March 21, 2024
    Inventors: Hong Chen, Ziqi Fan, Richard Wallingford, Xiaochun Li, Sangbong Park
  • Publication number: 20220073954
    Abstract: Described are compositions and methods related to hybrid yeast that produces an increased amount of ethanol from starch-containing substrates compared to its parental yeast. Such yeast is well-suited for use in fuel alcohol production to increase yield.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 10, 2022
    Inventors: Xiaochun FAN, Kerry HOLLANDS, Barbara Urszula KOZAK, Elizabeth A. KRASLEY, Celia Emily Gaby PAYEN, Min QI
  • Publication number: 20210179674
    Abstract: Described are compositions and methods relating to yeast cells having a genetic mutation that give rise to increased alcohol production. Such yeast is well-suited for use in alcohol production to reduce fermentation time and/or increase yields.
    Type: Application
    Filed: October 22, 2018
    Publication date: June 17, 2021
    Inventors: Xiaochun Fan, Zhongqiang Chen, Min Qi
  • Publication number: 20200263165
    Abstract: Compositions and methods are provided for editing nucleotides and/or altering target sites in the genome of a cell. The methods and compositions employ a recombinant DNA construct comprising a Pol-II promoter operably linked to a polynucleotide encoding a single guide RNA, wherein said guide RNA is capable of forming a guide RNA/Cas endonuclease complex, wherein said complex can bind to and cleave a target site sequence in the genome of a cell such as a eukaryote cell. The present disclosure further describes methods and compositions employing said recombinant DNA construct to modify the genome of non-conventional yeast.
    Type: Application
    Filed: December 15, 2016
    Publication date: August 20, 2020
    Inventors: Felipe Oseas Bendezu, Xiaochun Fan, Ryan L. Frisch, Seung-Pyo Hong
  • Publication number: 20200190540
    Abstract: Non-conventional yeasts are disclosed herein comprising at least one RNA-guided endonuclease (RGEN) comprising at least one RNA component that does not have a 5?-cap. This uncapped RNA component comprises a sequence complementary to a target site sequence in a chromosome or episome in the yeast. The RGEN can bind to, and optionally cleave, one or both DNA strands at the target site sequence. An example of an RGEN herein is a complex of a Cas9 protein with a guide RNA. A ribozyme is used in certain embodiments to provide an RNA component lacking a 5?-cap. Further disclosed are methods of genetic targeting in non-conventional yeast.
    Type: Application
    Filed: October 30, 2019
    Publication date: June 18, 2020
    Inventors: Ryan Frisch, Xiaochun Fan, Seung-Pyo Hong
  • Publication number: 20200157516
    Abstract: A composition is disclosed that comprises at least one protein component of an RNA-guided endonuclease (RGEN) and at least one cell-penetrating peptide (CPP), wherein the RGEN protein component and CPP are covalently or non-covalently linked to each other in an RGEN protein-CPP complex. The RGEN protein-CPP complex can traverse (i) a cell membrane, or (ii) a cell wall and cell membrane, of a cell. The RGEN protein component of an RGEN protein-CPP complex in certain embodiments can be associated with a suitable RNA component to provide an RGEN capable of specific DNA targeting. Further disclosed are compositions comprising at least one protein component of a guide polynucleotide/Cas endonuclease complex and at least one CPP, as well as methods of delivering RGEN proteins into microbial cells, as well as methods of targeting DNA with RGENs.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: RYAN L. FRISCH, XIAOCHUN FAN, SEUNG-PYO HONG, ETHEL NOLAND JACKSON
  • Patent number: 10626424
    Abstract: Recombinant microbial cells comprising an engineered LCDA production pathway that comprises at least one up-regulated long-chain acyl-CoA synthetase (ACoS) are disclosed. These recombinant microbial cells are capable of producing one or more long-chain dicarboxylic acid (LCDA) products from a long-chain fatty acid-comprising substrate. Methods of using recombinant microbial cells to produce LCDAs are also disclosed.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: April 21, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Quinn Qun Zhu, Xiaochun Fan, Seung-Pyo Hong, Despina Boughioukou, Dongming Xie, Himanshu H. Dhamankar
  • Patent number: 10584322
    Abstract: A composition is disclosed that comprises at least one protein component of an RNA-guided endonuclease (RGEN) and at least one cell-penetrating peptide (CPP), wherein the RGEN protein component and CPP are covalently or non-covalently linked to each other in an RGEN protein-CPP complex. The RGEN protein-CPP complex can traverse (i) a cell membrane, or (ii) a cell wall and cell membrane, of a cell. The RGEN protein component of an RGEN protein-CPP complex in certain embodiments can be associated with a suitable RNA component to provide an RGEN capable of specific DNA targeting. Further disclosed are compositions comprising at least one protein component of a guide polynucleotide/Cas endonuclease complex and at least one CPP, as well as methods of delivering RGEN proteins into microbial cells, as well as methods of targeting DNA with RGENs.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: March 10, 2020
    Assignee: DUPONT US HOLDING, LLC
    Inventors: Ryan L Frisch, Xiaochun Fan, Seung-Pyo Hong, Ethel Noland Jackson
  • Patent number: 10513711
    Abstract: Non-conventional yeasts are disclosed herein comprising at least one RNA-guided endonuclease (RGEN) comprising at least one RNA component that does not have a 5?-cap. This uncapped RNA component comprises a sequence complementary to a target site sequence in a chromosome or episome in the yeast. The RGEN can bind to, and optionally cleave, one or both DNA strands at the target site sequence. An example of an RGEN herein is a complex of a Cas9 protein with a guide RNA. A ribozyme is used in certain embodiments to provide an RNA component lacking a 5?-cap. Further disclosed are methods of genetic targeting in non-conventional yeast.
    Type: Grant
    Filed: July 5, 2015
    Date of Patent: December 24, 2019
    Assignee: DUPONT US HOLDING, LLC
    Inventors: Ryan Frisch, Xiaochun Fan, Seung-Pyo Hong
  • Publication number: 20190300877
    Abstract: Compositions and methods are provided for editing nucleotides and/or altering target sites in the genome of a cell. The methods and compositions employ a recombinant DNA construct comprising a tRNA promoter operably linked to a polynucleotide encoding a single guide RNA, wherein said recombinant DNA construct does not comprise a nucleotide sequence encoding a ribozyme, wherein said guide RNA is capable of forming a guide RNA/Cas endonuclease complex, wherein said complex can bind to and cleave a target site sequence in the genome of a cell such as a microbial cell.
    Type: Application
    Filed: April 9, 2019
    Publication date: October 3, 2019
    Inventors: FELIPE OSEAS BENDEZU, XIAOCHUN FAN, RYAN L. FRISCH, SEUNG-PYO HONG
  • Publication number: 20190144897
    Abstract: Recombinant microbial cells comprising an engineered LCDA production pathway that comprises at least one up-regulated long-chain acyl-CoA synthetase (ACoS) are disclosed. These recombinant microbial cells are capable of producing one or more long-chain dicarboxylic acid (LCDA) products from a long-chain fatty acid-comprising substrate. Methods of using recombinant microbial cells to produce LCDAs are also disclosed.
    Type: Application
    Filed: July 20, 2016
    Publication date: May 16, 2019
    Inventors: Quinn Qun Zhu, Xiaochun Fan, Seung-Pyo Hong, Despina Boughioukou, Dongming Xie, Himanshu H. Dhamankar
  • Publication number: 20190100737
    Abstract: A composition is disclosed that comprises at least one protein component of an RNA-guided endonuclease (RGEN) and at least one cell-penetrating peptide (CPP), wherein the RGEN protein component and CPP are covalently or non-covalently linked to each other in an RGEN protein-CPP complex. The RGEN protein-CPP complex can traverse (i) a cell membrane, or (ii) a cell wall and cell membrane, of a cell. The RGEN protein component of an RGEN protein-CPP complex in certain embodiments can be associated with a suitable RNA component to provide an RGEN capable of specific DNA targeting. Further disclosed are compositions comprising at least one protein component of a guide polynucleotide/Cas endonuclease complex and at least one CPP, as well as methods of delivering RGEN proteins into microbial cells, as well as methods of targeting DNA with RGENs.
    Type: Application
    Filed: December 13, 2018
    Publication date: April 4, 2019
    Inventors: RYAN L. FRISCH, XIAOCHUN FAN, SEUNG-PYO HONG, ETHEL NOLAND JACKSON
  • Patent number: 10208298
    Abstract: A composition is disclosed that comprises at least one protein component of an RNA-guided endonuclease (RGEN) and at least one cell-penetrating peptide (CPP), wherein the RGEN protein component and CPP are covalently or non-covalently linked to each other in an RGEN protein-CPP complex. The RGEN protein-CPP complex can traverse (i) a cell membrane, or (ii) a cell wall and cell membrane, of a cell. The RGEN protein component of an RGEN protein-CPP complex in certain embodiments can be associated with a suitable RNA component to provide an RGEN capable of specific DNA targeting. Further disclosed are compositions comprising at least one protein component of a guide polynucleotide/Cas endonuclease complex and at least one CPP, as well as methods of delivering RGEN proteins into microbial cells, as well as methods of targeting DNA with RGENs.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: February 19, 2019
    Assignee: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Ryan L. Frisch, Xiaochun Fan, Seung-Pyo Hong, Ethel Noland Jackson
  • Publication number: 20170335300
    Abstract: A composition is disclosed that comprises at least one protein component of an RNA-guided endonuclease (RGEN) and at least one cell-penetrating peptide (CPP), wherein the RGEN protein component and CPP are covalently or non-covalently linked to each other in an RGEN protein-CPP complex. The RGEN protein-CPP complex can traverse (i) a cell membrane, or (ii) a cell wall and cell membrane, of a cell. The RGEN protein component of an RGEN protein-CPP complex in certain embodiments can be associated with a suitable RNA component to provide an RGEN capable of specific DNA targeting. Further disclosed are compositions comprising at least one protein component of a guide polynucleotide/Cas endonuclease complex and at least one CPP, as well as methods of delivering RGEN proteins into microbial cells, as well as methods of targeting DNA with RGENs.
    Type: Application
    Filed: November 3, 2015
    Publication date: November 23, 2017
    Inventors: Ryan L. Frisch, Xiaochun Fan, Seung-Pyo Hong, Ethel Noland Jackson
  • Publication number: 20170226533
    Abstract: Non-conventional yeasts are disclosed herein comprising at least one RNA-guided endonuclease (RGEN) comprising at least one RNA component that does not have a 5?-cap. This uncapped RNA component comprises a sequence complementary to a target site sequence in a chromosome or episome in the yeast. The RGEN can bind to, and optionally cleave, one or both DNA strands at the target site sequence. An example of an RGEN herein is a complex of a Cas9 protein with a guide RNA. A ribozyme is used in certain embodiments to provide an RNA component lacking a 5?-cap. Further disclosed are methods of genetic targeting in non-conventional yeast.
    Type: Application
    Filed: July 5, 2015
    Publication date: August 10, 2017
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Ryan FRISCH, Xiaochun FAN, Seung-Pyo HONG,
  • Patent number: 9701989
    Abstract: Recombinant microbial cells are disclosed herein that produce an oil comprising at least 28 percent eicosapentaenoic acid (EPA) measured as a weight percent of dry cell weight. These cells may comprise a polynucleotide sequence encoding an active acyl-CoA:lysophosphatidylcholine acyltransferase (LPCAT) comprising at least one amino acid mutation in a membrane-bound O-acyltransferase motif. In addition, the cells may comprise a down-regulation of an endogenous polynucleotide sequence encoding Sou2 sorbitol utilization protein, and/or one or more polynucleotides encoding phospholipid:diacylglycerol acyltransferase (PDAT), delta-12 desaturase, a dihomo-gamma-linolenic acid (DGLA) synthase multizyme, delta-8 desaturase, malonyl-CoA synthetase (MCS), or acyl-CoA:lysophosphatidic acid acyltransferase (LPAAT). Also disclosed are methods of using the recombinant microbial cells to produce oil containing omega-3 polyunsaturated fatty acids such as EPA.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: July 11, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Quinn Qun Zhu, Seung-Pyo Hong, Pamela L Sharpe, Narendra S Yadav, Xiaochun Fan, Michael Dauner
  • Publication number: 20140186906
    Abstract: Recombinant microbial cells are disclosed herein that produce an oil comprising at least 28 percent eicosapentaenoic acid (EPA) measured as a weight percent of dry cell weight. These cells may comprise a polynucleotide sequence encoding an active acyl-CoA:lysophosphatidylcholine acyltransferase (LPCAT) comprising at least one amino acid mutation in a membrane-bound O-acyltransferase motif. In addition, the cells may comprise a down-regulation of an endogenous polynucleotide sequence encoding Sou2 sorbitol utilization protein, and/or one or more polynucleotides encoding phospholipid:diacylglycerol acyltransferase (PDAT), delta-12 desaturase, a dihomo-gamma-linolenic acid (DGLA) synthase multizyme, delta-8 desaturase, malonyl-CoA synthetase (MCS), or acyl-CoA:lysophosphatidic acid acyltransferase (LPAAT). Also disclosed are methods of using the recombinant microbial cells to produce oil containing omega-3 polyunsaturated fatty acids such as EPA.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 3, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Quinn Qun Zhu, Seung-Pyo Hong, Pamela L. Sharpe, Narendra S. Yadav, Xiaochun Fan, Michael Dauner