Patents by Inventor Chi Lu

Chi Lu 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: 11749532
    Abstract: Methods and apparatus for processing a substrate are provided. For example, a method of processing a substrate comprises supplying oxygen (O2) into a processing volume of an etch chamber to react with a silicon-based hardmask layer atop a base layer of ruthenium to form a covering of an SiO-like material over the silicon-based hardmask layer and etching the base layer of ruthenium using at least one of O2 or chloride (Cl2) while supplying nitrogen (N2) to sputter some of the SiO-like material onto an exposed ruthenium sidewall created during etching.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: September 5, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Hao Jiang, Chi Lu, He Ren, Mehul Naik
  • Publication number: 20230045689
    Abstract: A method of forming an interconnect structure for semiconductor devices is described. The method comprises etching a patterned interconnect stack for form first conductive lines and expose a top surface of a first etch stop layer; etching the first etch stop layer to form second conductive lines and expose a top surface of a barrier layer; and forming a self-aligned via.
    Type: Application
    Filed: October 18, 2022
    Publication date: February 9, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Hao Jiang, Chi Lu, He Ren, Chi-I Lang, Ho-yung David Hwang, Mehul Naik
  • Patent number: 11508617
    Abstract: A method of forming an interconnect structure for semiconductor devices is described. The method comprises etching a patterned interconnect stack for form first conductive lines and expose a top surface of a first etch stop layer; etching the first etch stop layer to form second conductive lines and expose a top surface of a barrier layer; and forming a self-aligned via.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 22, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Hao Jiang, Chi Lu, He Ren, Chi-I Lang, Ho-yung David Hwang, Mehul Naik
  • Publication number: 20220359224
    Abstract: Methods and apparatus for processing a substrate are provided. For example, a method of processing a substrate comprises supplying oxygen (O2) into a processing volume of an etch chamber to react with a silicon-based hardmask layer atop a base layer of ruthenium to form a covering of an SiO-like material over the silicon-based hardmask layer and etching the base layer of ruthenium using at least one of O2 or chloride (Cl2) while supplying nitrogen (N2) to sputter some of the SiO-like material onto an exposed ruthenium sidewall created during etching.
    Type: Application
    Filed: May 4, 2021
    Publication date: November 10, 2022
    Inventors: Hao JIANG, Chi LU, He REN, Mehul NAIK
  • Publication number: 20210125864
    Abstract: A method of forming an interconnect structure for semiconductor devices is described. The method comprises etching a patterned interconnect stack for form first conductive lines and expose a top surface of a first etch stop layer; etching the first etch stop layer to form second conductive lines and expose a top surface of a barrier layer; and forming a self-aligned via.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 29, 2021
    Inventors: Hao Jiang, Chi Lu, He Ren, Chi-I Lang, Ho-yung David Hwang, Mehul Naik
  • Patent number: 10954129
    Abstract: A method of fabricating a semiconductor structure is described. The method comprises forming at least one mandrel on a substrate, the at least one mandrel comprising a diamond-like carbon and having a top and two opposing sidewalls, the diamond-like carbon comprising at least 40% sp3 hybridized carbon atoms. The mandrel may be used in Self-Aligned Multiple Patterning (SAMP) processes.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: March 23, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Takehito Koshizawa, Eswaranand Venkatasubramanian, Pramit Manna, Chi Lu, Chi-I Lang, Nancy Fung, Abhijit Basu Mallick
  • Publication number: 20180358229
    Abstract: A method of fabricating a semiconductor structure is described. The method comprises forming at least one mandrel on a substrate, the at least one mandrel comprising a diamond-like carbon and having a top and two opposing sidewalls, the diamond-like carbon comprising at least 40% sp3 hybridized carbon atoms. The mandrel may be used in Self-Aligned Multiple Patterning (SAMP) processes.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 13, 2018
    Applicant: Applied Materials, Inc.
    Inventors: Takehito Koshizawa, Eswaranand Venkatasubramanian, Pramit Manna, Chi Lu, Chi-I Lang, Nancy Fung, Abhijit Basu Mallick
  • Patent number: 9861810
    Abstract: Thermal drawing processes can be used to make multifunctional, high-resolution neural probes for neural recording and stimulation. An exemplary neural probe may include one or more conductive fibers or microelectrodes coated with two or more layers of insulating material, at least one of which is partially etched to expose a tip at the neural probe's distal end. The conductive fibers conduct electrical signals (e.g., neural spikes or electrical stimulation) between the tip and the neural probe's proximal end. Optional optical and fluidic waveguides may guide light and fluid, respectively, between the tip and the proximal end. A neural probe may be flexible enough for long-term (chronic) implantation in neural tissue (e.g., the brain) without excessive tissue damage, even during movement of the brain in the skull. The probe may be made from biocompatible materials, such as insulating and conductive polymers, that have negligible (insignificant) interaction with the surrounding tissue.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: January 9, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Polina Olegovna Anikeeva, Xiaoting Jia, Chi Lu, Andres Canales, Ulrich Paul Froriep, Christina Myra Tringides, Yoel Fink
  • Publication number: 20160012701
    Abstract: A unitary sleeve configured to encompass at least a portion of a dispenser device and convert the substance dispenser into a “smart” dispenser. An actuator is coupled to the dispenser device and actuated in response to mechanical release of a substance from the dispenser device. A transmitter module is coupled to the actuator and operable to transmit an activation signal to a remote device in response to actuation of the actuator. The remote device communicatively coupled to the transmitter module of the unitary sleeve comprises the “smart” substance dispenser system.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 14, 2016
    Inventor: Chi Lu
  • Publication number: 20140371564
    Abstract: Thermal drawing processes can be used to make multifunctional, high-resolution neural probes for neural recording and stimulation. An exemplary neural probe may include one or more conductive fibers or microelectrodes coated with two or more layers of insulating material, at least one of which is partially etched to expose a tip at the neural probe's distal end. The conductive fibers conduct electrical signals (e.g., neural spikes or electrical stimulation) between the tip and the neural probe's proximal end. Optional optical and fluidic waveguides may guide light and fluid, respectively, between the tip and the proximal end. A neural probe may be flexible enough for long-term (chronic) implantation in neural tissue (e.g., the brain) without excessive tissue damage, even during movement of the brain in the skull. The probe may be made from biocompatible materials, such as insulating and conductive polymers, that have negligible (insignificant) interaction with the surrounding tissue.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 18, 2014
    Inventors: Polina Olegovna Anikeeva, Xiaoting Jia, Chi Lu, Andres Canales, Ulrich Paul Froriep, Christina Myra Tringides, Yoel Fink
  • Patent number: 8467716
    Abstract: Systems and methods for building a trait model for essay evaluation are provided. At least one evaluated essay is received. A plurality of features pertaining to one or more traits from the at least one evaluated essay are identified and extracted. The one or more traits comprise writing errors, discourse, or vocabulary usage. A plurality of vector files based upon the plurality of features are created. A trait model for essay evaluation based upon the plurality of vector files is built. The trait model is evaluated, where the evaluation includes mapping features of a new essay to the trait model by navigating a multi-branched decision tree. At each branch of the decision tree, a value associated with the features of the new essay is used to determine how to proceed through the trait model.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: June 18, 2013
    Assignee: Educational Testing Service
    Inventors: Jill Burstein, Vyacheslav Andreyev, Chi Lu
  • Publication number: 20100297596
    Abstract: To automatically evaluate an essay, the essay is applied to a plurality of trait models and a plurality of trait scores are determined based on the plurality of trait models. Each of these trait scores having been generated from a respective trait model. In addition, a score is determined based on the plurality of trait scores.
    Type: Application
    Filed: July 30, 2010
    Publication date: November 25, 2010
    Inventors: Jill Burstein, Vyacheslav Andreyev, Chi Lu
  • Patent number: 7769339
    Abstract: To automatically evaluate an essay, the essay is applied to a plurality of trait models and a plurality of trait scores are determined based on the plurality of trait models. Each of these trait scores having been generated from a respective trait model. In addition, a score is determined based on the plurality of trait scores.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: August 3, 2010
    Assignee: Educational Testing Service
    Inventors: Jill Burstein, Slava Andreyev, Chi Lu
  • Publication number: 20060286540
    Abstract: To automatically evaluate an essay, the essay is applied to a plurality of trait models and a plurality of trait scores are determined based on the plurality of trait models. Each of these trait scores having been generated from a respective trait model. In addition, a score is determined based on the plurality of trait scores.
    Type: Application
    Filed: July 27, 2006
    Publication date: December 21, 2006
    Inventors: Jill Burstein, Slava Andreyev, Chi Lu
  • Patent number: 7088949
    Abstract: To automatically evaluate an essay, the essay is applied to a plurality of trait models and a plurality of trait scores are determined based on the plurality of trait models. Each of these trait scores having been generated from a respective trait model. In addition, a score is determined based on the plurality of trait scores.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: August 8, 2006
    Assignee: Educational Testing Service
    Inventors: Jill Burstein, Slava Andreyev, Chi Lu
  • Publication number: 20050217085
    Abstract: A structure of a patterned zipper has two zipper tapes, a plurality of patterns formed on the two zipper tapes and a plurality of teeth with at least two different colors crisscrossedly fixed on two insides of the two zipper tapes, so that the teeth do not separate the patterns that are on the two zipper tapes to keep the patterns complete.
    Type: Application
    Filed: April 5, 2004
    Publication date: October 6, 2005
    Inventor: Chi Lu
  • Publication number: 20040175687
    Abstract: To automatically evaluate an essay, the essay is applied to a plurality of trait models and a plurality of trait scores are determined based on the plurality of trait models. Each of these trait scores having been generated from a respective trait model. In addition, a score is determined based on the plurality of trait scores.
    Type: Application
    Filed: December 16, 2002
    Publication date: September 9, 2004
    Inventors: Jill Burstein, Slava Andreyev, Chi Lu
  • Patent number: 6366759
    Abstract: A method of grading an essay using an automated essay scoring system is provided. The method comprises the automated steps of (a) parsing the essay to produce parsed text, wherein the parsed text is a syntactic representation of the essay, (b) using the parsed text to create a vector of syntactic features derived from the essay, (c) using the parsed text to create a vector of rhetorical features derived from the essay, (d) creating a first score feature derived from the essay, (e) creating a second score feature derived from the essay, and (f) processing the vector of syntactic features, the vector of rhetorical features, the first score feature, and the second score feature to generate a score for the essay.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: April 2, 2002
    Assignee: Educational Testing Service
    Inventors: Jill C. Burstein, Lisa Braden-Harder, Martin S. Chodorow, Bruce A. Kaplan, Karen Kukich, Chi Lu, Donald A. Rock, Susanne Wolff
  • Patent number: 6181909
    Abstract: A method of grading an essay using an automated essay scoring system is provided. The method comprises the automated steps of (a) parsing the essay to produce parsed text, wherein the parsed text is a syntactic representation of the essay, (b) using the parsed text to create a vector of syntactic features derived from the essay, (c) using the parsed text to create a vector of rhetorical features derived from the essay, (d) creating a first score feature derived from the essay, (e) creating a second score feature derived from the essay, and (f) processing the vector of syntactic features, the vector of rhetorical features, the first score feature, and the second score feature to generate a score for the essay.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: January 30, 2001
    Assignee: Educational Testing Service
    Inventors: Jill C. Burstein, Lisa Braden-Harder, Martin S. Chodorow, Bruce A. Kaplan, Karen Kukich, Chi Lu, Donald A. Rock, Susanne Wolff
  • Patent number: 6115683
    Abstract: A system for carrying out a content-based process for automatically scoring essays is disclosed. The system includes a computer; a data storage device; a parse tree file stored in the data storage device, the parse tree file being representative of an essay in a parse tree format; a morphology stripping program; a concept extraction program for creating, on the basis of a morphology-stripped parse tree file, a phrasal node file; and a rule matching scoring program for scoring the essay on the basis of the phrasal node file.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: September 5, 2000
    Assignee: Educational Testing Service
    Inventors: Jill C. Burstein, Randy Mark Kaplan, Susanne Wolff, Chi Lu