Patents by Inventor John Hoang

John Hoang 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: 20240092745
    Abstract: The present invention provides new prodrugs of therapeutically active compounds, including oligomeric prodrugs, and compositions to treat medical disorders, for example glaucoma, a disorder or abnormality related to an increase in intraocular pressure (IOP), a disorder requiring neuroprotection, age-related macular degeneration, or diabetic retinopathy.
    Type: Application
    Filed: January 9, 2023
    Publication date: March 21, 2024
    Applicant: Graybug Vision, Inc.
    Inventors: Ming Yang, John G. Bauman, Jeffrey L. Cleland, Nu Hoang, Emmett Cunningham
  • Publication number: 20240033387
    Abstract: Embodiments disclosed include autonomous robotic systems and methods for disinfecting an environment. An autonomous disinfecting system comprises, in a housing, a first unit comprising a first plurality of UV-C lamps attached to a first wireless base comprising a plurality of wheels. Preferably, the first unit further comprises a docking port for a second unit comprising a second plurality of UV-C lamps attached to a second wireless base, and a motion sensor configured to send a signal to a processing unit comprised in the autonomous disinfecting system wherein the processing unit is configured to shut down the system when it receives a signal indicating a detected movement.
    Type: Application
    Filed: August 7, 2023
    Publication date: February 1, 2024
    Inventors: Sherylinn Hoang, John Hoang
  • Patent number: 11832533
    Abstract: Methods and apparatuses for forming an encapsulation bilayer over a chalcogenide material on a semiconductor substrate are provided. Methods involve forming a bilayer including a barrier layer directly on chalcogenide material deposited using pulsed plasma plasma-enhanced chemical vapor deposition (PP-PECVD) and an encapsulation layer over the barrier layer deposited using plasma-enhanced atomic layer deposition (PEALD). In various embodiments, the barrier layer is formed using a halogen-free silicon precursor and the encapsulation layer deposited by PEALD is formed using a halogen-containing silicon precursor and a hydrogen-free nitrogen-containing reactant.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: November 28, 2023
    Assignee: Lam Research Corporation
    Inventors: James Samuel Sims, Andrew John McKerrow, Meihua Shen, Thorsten Lill, Shane Tang, Kathryn Merced Kelchner, John Hoang, Alexander Dulkin, Danna Qian, Vikrant Rai
  • Patent number: 11792987
    Abstract: A three-dimensional (3D) memory structure includes memory cells and a plurality of oxide layers and a plurality of word line layers. The plurality of oxide layers and the plurality of word line layers are alternately stacked in a first direction. A plurality of double channel holes extend through the plurality of oxide layers and the plurality of word line layers in the first direction. The plurality of double channel holes have a peanut-shaped cross-section in a second direction that is transverse to the first direction.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 17, 2023
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Thorsten Lill, Meihua Shen, John Hoang, Hui-Jung Wu, Gereng Gunawan, Yang Pan
  • Patent number: 11723998
    Abstract: Embodiments disclosed include autonomous robotic systems and methods for disinfecting an environment. An autonomous disinfecting system comprises, in a housing, a first unit comprising a first plurality of UV-C lamps attached to a first wireless base comprising a plurality of wheels. Preferably, the first unit further comprises a docking port for a second unit comprising a second plurality of UV-C lamps attached to a second wireless base, and a motion sensor configured to send a signal to a processing unit comprised in the autonomous disinfecting system wherein the processing unit is configured to shut down the system when it receives a signal indicating a detected movement.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: August 15, 2023
    Inventors: Sherylinn Hoang, John Hoang
  • Publication number: 20230143057
    Abstract: Channel material is conformally deposited along sidewalls of one or more etched features of a mold stack in fabricating a three-terminal memory device. The channel material is deposited in recessed regions and non-recessed regions of the one or more etched features. A sacrificial liner is deposited on the channel material. A directional etch removes the sacrificial liner from non-recessed regions of the one or more etched features. An isotropic etch removes the channel material from non-recessed regions of the one or more etched features, leaving the channel material and the sacrificial liner intact in the recessed regions. The sacrificial liner is removed, leaving the channel material intact and isolated with minimal loss of channel material from over-etch.
    Type: Application
    Filed: March 1, 2021
    Publication date: May 11, 2023
    Inventors: John HOANG, Meihua SHEN, Thorsten Bernd LILL, Hui-Jung WU, Aaron Lynn ROUTZAHN, Francis Sloan ROBERTS
  • Patent number: 11511008
    Abstract: Embodiments disclosed include autonomous robotic systems and methods for disinfecting an environment. An autonomous disinfecting system comprises, in a housing, a first unit comprising a first plurality of UV-C lamps attached to a first wireless base comprising a plurality of wheels. Preferably, the first unit further comprises a docking port for a second unit comprising a second plurality of UV-C lamps attached to a second wireless base, and a motion sensor configured to send a signal to a processing unit comprised in the autonomous disinfecting system wherein the processing unit is configured to shut down the system when it receives a signal indicating a detected movement.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: November 29, 2022
    Assignee: H7 Technologies, Inc.
    Inventors: Sherylinn Hoang, John Hoang
  • Publication number: 20220115592
    Abstract: Methods and apparatuses for forming an encapsulation bilayer over a chalcogenide material on a semiconductor substrate are provided. Methods involve forming a bilayer including a barrier layer directly on chalcogenide material deposited using pulsed plasma plasma-enhanced chemical vapor deposition (PP-PECVD) and an encapsulation layer over the barrier layer deposited using plasma-enhanced atomic layer deposition (PEALD). In various embodiments, the barrier layer is formed using a halogen-free silicon precursor and the encapsulation layer deposited by PEALD is formed using a halogen-containing silicon precursor and a hydrogen-free nitrogen-containing reactant.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Inventors: James Samuel Sims, Andrew John McKerrow, Meihua Shen, Thorsten Lill, Shane Tang, Kathryn Merced Kelchner, John Hoang, Alexander Dulkin, Danna Qian, Vikrant Rai
  • Publication number: 20220051938
    Abstract: Methods for forming patterned multi-layer stacks including a metal-containing layer are provided herein. Methods involve using silicon-containing non-metal materials in a multi-layer stack including one sacrificial layer to be later removed and replaced with metal while maintaining etch contrast to pattern the multi-layer stack and selectively remove the sacrificial layer prior to depositing metal. Methods involve using silicon oxycarbide in lieu of silicon nitride, and a sacrificial non-metal material in lieu of a metal-containing layer, to fabricate the multi-layer stack, pattern the multi-layer stack, selectively remove the sacrificial non-metal material to leave spaces in the stack, and deposit metal-containing material into the spaces. Sacrificial non-metal materials include silicon nitride and doped polysilicon, such as boron-doped silicon.
    Type: Application
    Filed: September 10, 2019
    Publication date: February 17, 2022
    Inventors: Hui-Jung Wu, Bart J. van Schravendijk, Mark Naoshi Kawaguchi, Gereng Gunawan, Jay E. Uglow, Nagraj Shankar, Gowri Channa Kamarthy, Kevin M. McLaughlin, Ananda K. Banerji, Jialing Yang, John Hoang, Aaron Lynn Routzahn, Nathan Musselwhite, Meihua Shen, Thorsten Bernd Lill, Hao Chi, Nicholas Dominic Altieri
  • Patent number: 11239420
    Abstract: Methods and apparatuses for forming an encapsulation bilayer over a chalcogenide material on a semiconductor substrate are provided. Methods involve forming a bilayer including a barrier layer directly on chalcogenide material deposited using pulsed plasma plasma-enhanced chemical vapor deposition (PP-PECVD) and an encapsulation layer over the barrier layer deposited using plasma-enhanced atomic layer deposition (PEALD). In various embodiments, the barrier layer is formed using a halogen-free silicon precursor and the encapsulation layer deposited by PEALD is formed using a halogen-containing silicon precursor and a hydrogen-free nitrogen-containing reactant.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: February 1, 2022
    Assignee: Lam Research Corporation
    Inventors: James Samuel Sims, Andrew John McKerrow, Meihua Shen, Thorsten Lill, Shane Tang, Kathryn Merced Kelchner, John Hoang, Alexander Dulkin, Danna Qian, Vikrant Rai
  • Publication number: 20220001061
    Abstract: Embodiments disclosed include autonomous robotic systems and methods for disinfecting an environment. An autonomous disinfecting system comprises, in a housing, a first unit comprising a first plurality of UV-C lamps attached to a first wireless base comprising a plurality of wheels. Preferably, the first unit further comprises a docking port for a second unit comprising a second plurality of UV-C lamps attached to a second wireless base, and a motion sensor configured to send a signal to a processing unit comprised in the autonomous disinfecting system wherein the processing unit is configured to shut down the system when it receives a signal indicating a detected movement.
    Type: Application
    Filed: March 15, 2021
    Publication date: January 6, 2022
    Inventors: Sherylinn Hoang, John Hoang
  • Publication number: 20210391355
    Abstract: A three-dimensional (3D) memory structure includes memory cells and a plurality of oxide layers and a plurality of word line layers. The plurality of oxide layers and the plurality of word line layers are alternately stacked in a first direction. A plurality of double channel holes extend through the plurality of oxide layers and the plurality of word line layers in the first direction. The plurality of double channel holes have a peanut-shaped cross-section in a second direction that is transverse to the first direction.
    Type: Application
    Filed: October 22, 2019
    Publication date: December 16, 2021
    Inventors: Thorsten LILL, Meihua SHEN, John HOANG, Hui-Jung WU, Gereng GUNAWAN, Yang PAN
  • Patent number: 10784086
    Abstract: Methods of etching cobalt on substrates are provided. Some methods involve exposing the substrate to a boron-containing halide gas and an additive, and exposing the substrate to an activation gas and a plasma. Additives improve selectively depositing a thicker layer of a boron-containing halide material on a surface of a mask than on a surface of a metal. Additives include H2, CH4, CF4, NF3, and Cl2. Boron-containing halide gases include BCl3, BBr3, BF3, and BI3. Exposures may be performed in two or more cycles, with variations in durations and/or bias power for each exposure in the two or more cycles.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 22, 2020
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Jialing Yang, Baosuo Zhou, Meihua Shen, Thorsten Lill, John Hoang
  • Publication number: 20200066987
    Abstract: Methods and apparatuses for forming an encapsulation bilayer over a chalcogenide material on a semiconductor substrate are provided. Methods involve forming a bilayer including a barrier layer directly on chalcogenide material deposited using pulsed plasma plasma-enhanced chemical vapor deposition (PP-PECVD) and an encapsulation layer over the barrier layer deposited using plasma-enhanced atomic layer deposition (PEALD). In various embodiments, the barrier layer is formed using a halogen-free silicon precursor and the encapsulation layer deposited by PEALD is formed using a halogen-containing silicon precursor and a hydrogen-free nitrogen-containing reactant.
    Type: Application
    Filed: August 24, 2018
    Publication date: February 27, 2020
    Inventors: James Samuel Sims, Andrew John McKerrow, Meihua Shen, Thorsten Lill, Shane Tang, Kathryn Merced Kelchner, John Hoang, Alexander Dulkin, Danna Qian, Vikrant Rai
  • Patent number: 10199235
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: February 5, 2019
    Assignee: Lam Research Corporation
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Publication number: 20180211846
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 26, 2018
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Publication number: 20180102236
    Abstract: Methods of etching cobalt on substrates are provided. Some methods involve exposing the substrate to a boron-containing halide gas and an additive, and exposing the substrate to an activation gas and a plasma. Additives improve selectively depositing a thicker layer of a boron-containing halide material on a surface of a mask than on a surface of a metal. Additives include H2, CH4, CF4, NF3, and Cl2. Boron-containing halide gases include BCl3, BBr3, BF3, and Bl3. Exposures may be performed in two or more cycles, with variations in durations and/or bias power for each exposure in the two or more cycles.
    Type: Application
    Filed: November 28, 2017
    Publication date: April 12, 2018
    Applicant: Lam Research Corporation
    Inventors: Jialing Yang, Baosuo Zhou, Meihua Shen, Thorsten Lill, John Hoang
  • Patent number: 9899234
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 20, 2018
    Assignee: Lam Research Corporation
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Patent number: 9870899
    Abstract: Methods of etching cobalt on substrates are provided. Some methods involve exposing the substrate to a boron-containing halide gas and an additive, and exposing the substrate to an activation gas and a plasma. Additives improve selectively depositing a thicker layer of a boron-containing halide material on a surface of a mask than on a surface of a metal. Additives include H2, CH4, CF4, NF3, and Cl2. Boron-containing halide gases include BCl3, BBr3, BF3, and BI3. Exposures may be performed in two or more cycles, with variations in durations and/or bias power for each exposure in the two or more cycles.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: January 16, 2018
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Jialing Yang, Baosuo Zhou, Meihua Shen, Thorsten Lill, John Hoang
  • Patent number: 9589853
    Abstract: A method of planarizing an upper surface of a semiconductor substrate in a plasma etch chamber comprises supporting the substrate on a support surface of a substrate support assembly that includes an array of independently controlled thermal control elements therein which are operable to control the spatial and temporal temperature of the support surface of the substrate support assembly to form independently controllable heater zones which are formed to correspond to a desired temperature profile across the upper surface of the semiconductor substrate. The etch rate across the upper surface of the semiconductor substrate during plasma etching depends on a localized temperature thereof wherein the desired temperature profile is determined such that the upper surface of the semiconductor substrate is planarized within a predetermined time. The substrate is plasma etched for the predetermined time thereby planarizing the upper surface of the substrate.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: March 7, 2017
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Monica Titus, Gowri Kamarthy, Harmeet Singh, Yoshie Kimura, Meihua Shen, Baosuo Zhou, Yifeng Zhou, John Hoang