Patents by Inventor Christopher A. Chang

Christopher A. Chang 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: 20240338348
    Abstract: Systems and methods including a framework for migration of live data. The method may comprised, by one or more hardware processors executing program instructions, receiving, at a migration proxy of the framework, code for reading data and writing data compatible with each of a plurality of states of a migration of data in a data store, wherein a service is at least intermittently reading data from and writing data to the data store; determining, by a migration runner of the framework, to perform the migration of the data; initiating, by the migration runner, the migration of the data, wherein the migration comprises a plurality of stages; storing, as the migration progresses through the plurality of stages, and at a migration data store of the framework, a current stage of the migration; and during the migration, using the migration proxy to read data from and write data to the data store.
    Type: Application
    Filed: June 17, 2024
    Publication date: October 10, 2024
    Inventors: Allen Chang, Christopher Male, David Cohen, Dragos-Florian Ristache, Danielle Kramer, John Garrod, Michael Harris, Ryan Zheng, Stephen Freiberg
  • Patent number: 12107076
    Abstract: Integrated circuits and integrated circuit dies include TSVs laid out in symmetrical patterns. Because of the symmetrical arrangement of the TSVs and associated routing patterns, an integrated circuit is able to support operation of multiple similar dies that are placed in different positions in the integrated circuit. This in turn simplifies the design and production of the multiple similar dies, thus reducing development and manufacturing costs for the corresponding integrated circuits.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: October 1, 2024
    Assignees: Advanced Micro Devices, Inc., ATI Technologies ULC
    Inventors: Wonjun Jung, Jasmeet Singh Narang, Tyrone Huang, Christopher Klement, Alan D. Smith, Edward Chang, John Wuu
  • Patent number: 12106039
    Abstract: Systems and methods for publication and external interfacing for a unified document surface are disclosed. An example system may include a document serving circuit structured to access a document data, the document data including data for a unified document surface, and to provide at least a portion of the document data to a client serving circuit; the client serving circuit structured to implement a unified document surface interface in response to the at least a portion of the document data; the client serving circuit further structured to implement an extension creation interface, and to provide a pack implementation value to the document serving circuit in response to user interactions with the extension creation interface; and wherein the document serving circuit is further structured to determine a pack definition value in response to the pack implementation value.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: October 1, 2024
    Assignee: Coda Project, Inc.
    Inventors: Alexander W. DeNeui, Glenn Jaume, Hariharan Sivaramakrishnan, Helena G. Jaramillo, John Z. Li, Jonathan L. Goldman, Martin Charles, W. Michael Varney, Timothy Andrew James, Adam Ginzberg, Nathan Penner, Evan Brooks, Michael Hewitt, Punit Shah, Patrick Barry, Huayang Guo, Jason Peter Stowe, Christopher Leland Eck, Alicia Salvino, Alan Fang, Spencer Chang, Elizabeth Huang, Oleg Vaskevich
  • Publication number: 20240309461
    Abstract: Methods and systems for sample contamination detection are disclosed. In particular, sample barcodes are utilized, wherein each sample barcode is assigned to a sample and ligated to fragments from the sample. The sample barcodes are used in conjunction with indices from sequencing libraries to accurately assign sequence reads to samples during multiplex sequencing. Molecule identifiers may also be utilized to aid in de-duping of sequence reads to precisely identify original NA fragments from a sample. Accordingly, in one or more embodiments, a sequencing method includes isolating DNA fragments in a sample, ligating the DNA fragments with unique molecule identifiers (UMIs), performing an amplification process resulting in amplicons, ligating a sample barcode onto the amplicons, and performing amplicon sequencing. The analytics system looks to whether indices are matched and whether a sample barcode matches to the pair of indices when identifying single-index or double-index hopping events.
    Type: Application
    Filed: March 13, 2024
    Publication date: September 19, 2024
    Inventors: Seyedmedhi Shojaee, Nathan Hunkapiller, Byoungsok Jung, Farnaz Absalan, Chenlu Hou, Sahar Nohzadeh-Malakshah, Christopher Chang
  • Patent number: 12089411
    Abstract: Embodiments disclosed herein include a semiconductor device and methods of forming such a device. In an embodiment, the semiconductor device comprises a substrate and a transistor on the substrate. In an embodiment, the transistor comprises a first gate electrode, where the first gate electrode is part of a first array of gate electrodes with a first pitch. In an embodiment, the first gate electrode has a first average grain size. In an embodiment, the semiconductor device further comprises a component cell on the substrate. In an embodiment, the component cell comprises a second gate electrode, where the second gate electrode is part of a second array of gate electrodes with a second pitch that is larger than the first pitch. In an embodiment, the second gate electrode has a second average grain size that is larger than the first average grain size.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: September 10, 2024
    Assignee: Intel Corporation
    Inventors: Tanuj Trivedi, Walid M. Hafez, Rohan Bambery, Daniel B. O'Brien, Christopher Alan Nolph, Rahul Ramaswamy, Ting Chang
  • Patent number: 12071673
    Abstract: The invention described herein provides for methods and systems for determining, selecting, and/or treating diseases and conditions caused by or associated with high quantities of methanogens in a subject, or diseases and conditions caused by or associated with low quantities of methanogens in a subject. In various embodiments, a therapy to inhibit the growth of methanogens or to promote the growth of methanogens are selected and/or administered to a subject in need thereof.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: August 27, 2024
    Assignee: Cedars-Sinai Medical Center
    Inventors: Mark Pimentel, Ruchi Mathur, Christopher Chang
  • Publication number: 20240251912
    Abstract: A footwear assembly can comprise, an upper, a lace cable, a plurality of lace guides and a tensioner. The tensioner can comprise an elastic member extending between two lace guides of the plurality of lace guides, an elastic member extending between first and second portions of the upper, an elastic member extending between a portion of the upper and a lace guide of the plurality of lace guides, a heel channel connected to a heel portion of the upper and configured to facilitate access to an interior space, an elastic member coupled to the footwear assembly that functions to smooth out a torque versus lace displacement curve during tightening of the lace cable.
    Type: Application
    Filed: April 8, 2024
    Publication date: August 1, 2024
    Inventors: Summer L. Schneider, Narissa Chang, Eric P. Avar, Thomas G. Bell, Christopher Andon
  • Patent number: 12050567
    Abstract: Systems and methods including a framework for migration of live data. The method may comprised, by one or more hardware processors executing program instructions, receiving, at a migration proxy of the framework, code for reading data and writing data compatible with each of a plurality of states of a migration of data in a data store, wherein a service is at least intermittently reading data from and writing data to the data store; determining, by a migration runner of the framework, to perform the migration of the data; initiating, by the migration runner, the migration of the data, wherein the migration comprises a plurality of stages; storing, as the migration progresses through the plurality of stages, and at a migration data store of the framework, a current stage of the migration; and during the migration, using the migration proxy to read data from and write data to the data store.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: July 30, 2024
    Assignee: Palantir Technologies Inc.
    Inventors: Allen Chang, Christopher Male, David Cohen, Dragos-Florian Ristache, Danielle Kramer, John Garrod, Michael Harris, Ryan Zheng, Stephen Freiberg
  • Patent number: 12045486
    Abstract: Techniques for persisting user data across secure shell instances are provided. A method includes receiving a first request from a session manager service to establish a connection to a secure shell instance and restore a user block volume with corresponding backup user data. The method may include reserving an empty block volume. The method may also include transmitting a backup data identifier associated with the corresponding backup user data to a backup service and receiving the corresponding backup user data from the backup service. The method may further include providing the corresponding backup user data to the empty block volume to create a restore volume and transmitting a restore volume identifier corresponding to a data center identifier to the session manager service. The method may include receiving a second request to attach the restore volume to a reserved instance, the second request being received from the session manager service.
    Type: Grant
    Filed: September 8, 2023
    Date of Patent: July 23, 2024
    Assignee: Oracle International Corporation
    Inventors: Christopher S. Kasso, Peter Grant Gavares, Shih-Chang Chen, Devasena Kiruba Sagar, Michael William Gilbode
  • Publication number: 20240159772
    Abstract: Described herein are methods and systems for detecting and/or distinguishing irritable bowel syndrome (IBS) from inflammatory bowel disease (IBD) and celiac disease. The methods and systems can utilize the detection of anti-CdtB antibodies and/or anti-vinculin antibodies to detect IBS, distinguish IBS from IBD and/or celiac disease. Further described are methods for selecting a therapy to treat IBS, IBD or celiac disease.
    Type: Application
    Filed: May 19, 2023
    Publication date: May 16, 2024
    Applicant: Cedars-Sinai Medical Center
    Inventors: Mark Pimentel, Christopher Chang
  • Patent number: 11974765
    Abstract: A mouth insert for treating nosebleeds includes a main body and a bite tab. The bite tab removably engages the main body and is configured to move up and/or down vertically in order to adjust the height of the device. The main body includes a horizontally extending elongated portion, a center portion extending downward from a bottom surface of the elongated portion, and the center portion has a narrower width than the horizontally extending elongated portion. The elongated portion of the main body is shaped and dimensioned to be inserted into a buccal cavity of a user's mouth and to fit behind the user's upper lip and in front of the user's upper gums, and the center portion is shaped and dimensioned to be positioned only in front of the user's upper front teeth.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: May 7, 2024
    Inventors: Matthew James Ibarra, Christopher Chang
  • Patent number: 11915797
    Abstract: In comparison to conventional sequencing pileup algorithms, the process described herein generates sequencing pileups that contains additional information not typically reported by conventional algorithms while also consuming fewer computational resources (e.g., time, processing power, and memory). First, each of a FASTA reference genome and BAM sequence read files are converted to an internal representation. This enables the rapid iteration across nucleotide bases of the sequence reads to determine support characteristics that summarize information of nucleic acid molecules corresponding to positions across the reference genome. Next, the support characteristics of positions across the reference genome are stored through a memory allocation process that utilizes a first and a second temporary storage. This enables the convenient freeing of one temporary storage while the other temporary storage is being used.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: February 27, 2024
    Assignee: Grail, LLC
    Inventor: Christopher Chang
  • Publication number: 20240055073
    Abstract: Methods and systems for detecting contaminated fragments in a biological sample for cancer classification are disclosed. The system identifies CpG-SNP contamination markers. The CpG-SNP contamination markers include at least one SNP that affects a CpG site. The CpG-SNP contamination markers may include additive CpG-SNP sites and/or subtractive CpG-SNP sites. Additive CpG-SNP sites include an SNP that creates a new CpG site. Subtractive CpG-SNP sites include an SNP that removes a preexisting CpG site. Hybrid sites may include additional sites. A multiple CpG-SNP contamination marker comprises two or more CpG-SNP sites. A CpG-SNP & indel contamination marker comprises at least one CpG-SNP site and an indel site. For a given sample, the system identifies contamination markers for which the sample is homozygous. The system determines fragments having a haplotype that is different from the homozygous haplotype of the sample to be contamination fragments.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 15, 2024
    Inventors: Onur Sakarya, Christopher Chang, Ajinkya Kokate, Samuel S. Gross
  • Patent number: 11693009
    Abstract: Described herein are methods and systems for detecting and/or distinguishing irritable bowel syndrome (IBS) from inflammatory bowel disease (IBD) and celiac disease. The methods and systems can utilize the detection of anti-CdtB antibodies and/or anti-vinculin antibodies to detect IBS, distinguish IBS from IBD and/or celiac disease. Further described are methods for selecting a therapy to treat IBS, IBD or celiac disease.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: July 4, 2023
    Assignee: Cedars-Sinai Medical Center
    Inventors: Mark Pimentel, Christopher Chang
  • Publication number: 20220354925
    Abstract: The invention described herein provides for methods and systems for determining, selecting, and/or treating diseases and conditions caused by or associated with high quantities of methanogens in a subject, or diseases and conditions caused by or associated with low quantities of methanogens in a subject. In various embodiments, a therapy to inhibit the growth of methanogens or to promote the growth of methanogens are selected and/or administered to a subject in need thereof.
    Type: Application
    Filed: December 30, 2021
    Publication date: November 10, 2022
    Applicant: Cedars-Sinai Medical Center
    Inventors: Mark PIMENTEL, Ruchi MATHUR, Christopher CHANG
  • Publication number: 20220160384
    Abstract: A mouth insert for treating nosebleeds includes a main body and a bite tab. The bite tab removably engages the main body and is configured to move up and/or down vertically in order to adjust the height of the device. The main body includes a horizontally extending elongated portion, a center portion extending downward from a bottom surface of the elongated portion, and the center portion has a narrower width than the horizontally extending elongated portion. The elongated portion of the main body is shaped and dimensioned to be inserted into a buccal cavity of a user's mouth and to fit behind the user's upper lip and in front of the user's upper gums, and the center portion is shaped and dimensioned to be positioned only in front of the user's upper front teeth.
    Type: Application
    Filed: January 26, 2021
    Publication date: May 26, 2022
    Inventors: MATTHEW JAMES IBARRA, CHRISTOPHER CHANG
  • Patent number: 11235022
    Abstract: The invention described herein provides for methods and systems for determining, selecting, and/or treating diseases and conditions caused by or associated with high quantities of methanogens in a subject, or diseases and conditions caused by or associated with low quantities of methanogens in a subject. In various embodiments, a therapy to inhibit the growth of methanogens or to promote the growth of methanogens are selected and/or administered to a subject in need thereof.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: February 1, 2022
    Assignee: Cedars-Sinai Medical Center
    Inventors: Mark Pimentel, Ruchi Mathur, Christopher Chang
  • Publication number: 20210285042
    Abstract: An allelic position variant calling method using a prior genotype probability at the allelic position is provided. A strand specific base count set in forward and reverse directions for the allelic position is obtained, using strand orientation and identity of a respective base at the allelic position in each respective nucleic acid fragment sequence that maps to the allelic position, where bases at the allelic position whose identity can be affected by conversion of cytosine to uracil do not contribute to the strand specific base count set. Respective forward and reverse strand conditional probabilities are computed for each candidate genotype for the allelic position using the strand specific base count set and sequencing error estimate. Likelihoods are computed using a combination of these conditional probabilities and the prior genotype probability. From this, a determination is made as to whether the likelihoods support a variant call at the allelic position.
    Type: Application
    Filed: February 25, 2021
    Publication date: September 16, 2021
    Inventors: Pranav Singh, Christopher Chang, Collin Melton, Oliver Claude Venn
  • Publication number: 20210065847
    Abstract: Systems and methods for determining consensus base calls in nucleic acid sequencing are provided. A sequencing dataset is obtained corresponding to a plurality of base reads for a first base position within a plurality of base positions of a target nucleic acid molecule. The sequencing dataset includes at least two features, for each base read of the plurality of base reads. The at least two features are selected from among the features: a nucleotide base, a read quality score, a strand identifier, a trinucleotide context of the base read, and a confidence score associated with the trinucleotide context. The sequencing dataset is transformed into a feature tensor representing a distribution of the plurality of features in the sequencing dataset. The feature tensor is assessed with a classifier to determine a consensus base call for the first base position. The consensus base call comprises a predicted nucleotide base.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 4, 2021
    Inventors: Anton Valouev, Shirley Chen, David Burkhardt, Christopher Chang
  • Publication number: 20200360468
    Abstract: The invention described herein provides for methods and systems for determining, selecting, and/or treating diseases and conditions caused by or associated with high quantities of methanogens in a subject, or diseases and conditions caused by or associated with low quantities of methanogens in a subject. In various embodiments, a therapy to inhibit the growth of methanogens or to promote the growth of methanogens are selected and/or administered to a subject in need thereof.
    Type: Application
    Filed: May 29, 2020
    Publication date: November 19, 2020
    Applicant: Cedars-Sinai Medical Center
    Inventors: Mark PIMENTEL, Ruchi MATHUR, Christopher CHANG