Patents by Inventor David Cheung

David Cheung 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: 10333613
    Abstract: The present disclosure relates to health monitoring and maintenance of mobile platforms such as aircraft. In particular, onboard apparatus and methods and also ground-based apparatus and methods that cooperate in assisting with the maintenance of mobile platforms by facilitating diagnosis of events detected onboard mobile platforms while such mobile platforms are in operation (e.g., transit, flight) are disclosed. In various aspects, the present disclosure discloses apparatus and methods for handling and reporting the detection of events onboard mobile platforms, reporting predefined additional information associated with the event upon request from a ground facility, identifying one or more potential causes for the detected event and determining the occurrence probability for each potential cause identified.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: June 25, 2019
    Assignee: BOMBARDIER INC.
    Inventors: Andy Law, David Cheung
  • Patent number: 10267728
    Abstract: A measurement system to measure a concentration of neutral gas species above a substrate includes a substrate support located in a chamber to support a substrate. A plasma source generates plasma in the chamber above the substrate. The plasma generates metastable species having higher ionization energy than a neutral gas species. The metastable species excite the neutral gas species located above the substrate. An optical emission spectrometer (OES) sensor measures spectra from a location above the substrate while the plasma is generated by the plasma source. A controller is configured to determine a concentration of the neutral gas species in a region above the substrate based on the measured spectra and to selectively process the substrate based on the concentration.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: April 23, 2019
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Dengliang Yang, Ilia Kalinovski, Haoquan Fang, David Cheung
  • Patent number: 10181041
    Abstract: A system for use with a computer is provided, the computer including a self-encrypting drive (SED), the SED including a nominal space and a pre-boot region, wherein the nominal space can be locked to prevent access to the nominal space. The system includes SED management software configured to be loaded in the pre-boot region of the SED. The SED management software includes a pre-boot operating system (OS) and an unlocking program. The unlocking program is configured (a) to execute within the pre-boot OS, and (b) upon successful authentication of a user, to unlock the nominal space of the SED. Other embodiments are described and claimed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 15, 2019
    Assignee: Softex, Incorporated
    Inventors: Apurva M. Bhansali, Mehul R. Patel, Kamal M. Dhanani, Rajnish S. Chauhan, David Cheung
  • Patent number: 10181042
    Abstract: A system for use with a computer is provided, the computer including a self-encrypting drive (SED), the SED including a nominal space and a pre-boot region, wherein the nominal space can be locked to prevent access to the nominal space. The system includes SED management software configured to be loaded in the pre-boot region of the SED. The SED management software includes a pre-boot operating system (OS) and an unlocking program. The unlocking program is configured (a) to execute within the pre-boot OS, and (b) upon successful authentication of a user, to unlock the nominal space of the SED. Other embodiments are described and claimed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 15, 2019
    Assignee: Softex, Incorporated
    Inventors: Apurva M. Bhansali, Mehul R. Patel, Kamal M. Dhanani, Rajnish S. Chauhan, David Cheung
  • Patent number: 10109476
    Abstract: A method for depositing a barrier layer includes a) arranging a substrate including a nitride layer in a processing chamber; b) setting a process temperature in the processing chamber to a predetermined process temperature range; c) setting a process pressure in the processing chamber to a predetermined process pressure range; d) supplying at least one of a gas and a vapor including an organosilane precursor species; and e) depositing a barrier layer on the nitride layer. The barrier layer reduces diffusion of nitrogen-containing groups in the nitride layer into a photoresist layer that is subsequently deposited on the nitride layer.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: October 23, 2018
    Assignee: LAM RESEARCH CORPORATION
    Inventors: David Cheung, Ilia Kalinovski
  • Publication number: 20180174870
    Abstract: A substrate processing system for selectively etching a substrate includes a first chamber and a second chamber. A first gas delivery system supplies an inert gas species to the first chamber. A plasma generating system generates plasma including ions and metastable species in the first chamber. A gas distribution device removes the ions from the plasma, blocks ultraviolet (UV) light generated by the plasma and delivers the metastable species to the second chamber. A substrate support is arranged below the gas distribution device to support the substrate. A second gas delivery system delivers a reactive gas species to one of the gas distribution device or a volume located below the gas distribution device. The metastable species transfer energy to the reactive gas species to selectively etch one exposed material of the substrate more than at least one other exposed material of the substrate.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 21, 2018
    Inventors: Dengliang Yang, Haoquan Fang, David Cheung, Gnanamani Amburose, Eunsuk Ko, Weiyi Luo, Dan Zhang
  • Publication number: 20180101137
    Abstract: An analog watch has a casing and a watch dial supported by the casing. The casing has indicia thereon comprising numerals and index hour markers arranged in consecutive order so as to represent time in hours and minutes. The analog watch has a concentric shaft device comprising a plurality of concentrically arranged shafts. The analog watch includes an hour hand connected to one of the shafts such that the hour hand can rotate over the watch dial, a first stepper motor to drive the shaft to which the hour hand is connected, a minute hand connected to one of the shafts such that the minute hand can rotate over the watch dial, a second stepper motor to drive the shaft to which the minute hand is connected, a multi-function hand connected to one of the shafts such that the multi-function hand can rotate over the watch dial, and a third stepper motor to drive the shaft to which the multi-function hand is connected.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 12, 2018
    Inventor: DAVID CHEUNG
  • Publication number: 20180099073
    Abstract: A surgically implantable containment member for maintaining a bone augmentation material in a desired location and/or configuration following implantation in a human or other mammalian patient, in which the containment member is made of a natural membrane, such as pericardium, isolated from an animal donor and processed to avoid inflammation or tissue rejection, and a method of bone augmentation using such a containment member. In a particularly preferred embodiment, the containment member has a window which rapidly dissipates upon exposure to bodily fluids after implantation to expose bone augmentation material contained within the containment member to an adjacent bone to be augmented.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 12, 2018
    Applicant: OSSEOUS TECHNOLOGIES OF AMERICA
    Inventor: David CHEUNG
  • Patent number: 9941108
    Abstract: Plasma is generated using elemental hydrogen, a weak oxidizing agent, and a fluorine containing gas. An inert gas is introduced to the plasma downstream of the plasma source and upstream of a showerhead that directs gas mixture into the reaction chamber where the mixture reacts with the high-dose implant resist. The process removes both the crust and bulk resist layers at a high strip rate, and leaves the work piece surface substantially residue free with low silicon loss.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: April 10, 2018
    Assignee: Novellus Systems, Inc.
    Inventors: Haruhiro Harry Goto, David Cheung
  • Publication number: 20180088031
    Abstract: A measurement system to measure a concentration of neutral gas species above a substrate includes a substrate support located in a chamber to support a substrate. A plasma source generates plasma in the chamber above the substrate. The plasma generates metastable species having higher ionization energy than a neutral gas species. The metastable species excite the neutral gas species located above the substrate. An optical emission spectrometer (OES) sensor measures spectra from a location above the substrate while the plasma is generated by the plasma source. A controller is configured to determine a concentration of the neutral gas species in a region above the substrate based on the measured spectra and to selectively process the substrate based on the concentration.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 29, 2018
    Inventors: Dengliang Yang, Ilia Kalinovski, Haoquan Fang, David Cheung
  • Publication number: 20180084574
    Abstract: Embodiments include a method, computer program product, and system for grouping electronic devices into roll-call channel access (RCCA) groups to reduce the number of devices contending for a wireless channel. Devices within RCCA groups are represented a host device during a channel contention process. Once a channel is granted access to a host device, its respective RCCA group has control of the channel for a predetermined period of time during which devices of the RCCA group take turns transmitting data on the channel.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 22, 2018
    Applicant: Apple Inc.
    Inventors: Chiu Ngok Eric WONG, David Cheung
  • Publication number: 20180005819
    Abstract: A method for depositing a barrier layer includes a) arranging a substrate including a nitride layer in a processing chamber; b) setting a process temperature in the processing chamber to a predetermined process temperature range; c) setting a process pressure in the processing chamber to a predetermined process pressure range; d) supplying at least one of a gas and a vapor including an organosilane precursor species; and e) depositing a barrier layer on the nitride layer. The barrier layer reduces diffusion of nitrogen-containing groups in the nitride layer into a photoresist layer that is subsequently deposited on the nitride layer.
    Type: Application
    Filed: June 21, 2017
    Publication date: January 4, 2018
    Inventors: David Cheung, Ilia Kalinovski
  • Patent number: 9833544
    Abstract: A biocompatible, resorbable biphasic collagen membrane having a first area of relatively higher tensile strength and stiffness and lower porosity and a second area of relatively lower tensile strength and stiffness and higher porosity, and a method of manufacturing the such a membrane.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: December 5, 2017
    Assignee: OSSEOUS TECHNOLOGIES OF AMERICA
    Inventors: David Cheung, William Knox, Jay Malmquist, Edwin Shors, Dennis Smiler
  • Publication number: 20170324639
    Abstract: A method performed by a network device includes: receiving a first packet by the network device, wherein the first packet is tapped from a network; identifying a session to which the first packet belongs when the first packet has one or more values that at least partially match one or more terms, wherein the act of identifying the session is performed by the network device; receiving a second packet by the network device; determining whether the second packet belongs to the session; and performing a packet processing action by the network device based on the identified session; wherein the session is identified based on a first criterion, and the act of determining whether the second packet belongs to the session is performed based on a second criterion that is different from the first criterion.
    Type: Application
    Filed: June 21, 2017
    Publication date: November 9, 2017
    Inventors: Shehzad MERCHANT, David CHEUNG, Murali BOMMANA
  • Publication number: 20170134087
    Abstract: The present disclosure relates to health monitoring and maintenance of mobile platforms such as aircraft. In particular, onboard apparatus and methods and also ground-based apparatus and methods that cooperate in assisting with the maintenance of mobile platforms by facilitating diagnosis of events detected onboard mobile platforms while such mobile platforms are in operation (e.g., transit, flight) are disclosed. In various aspects, the present disclosure discloses apparatus and methods for handling and reporting the detection of events onboard mobile platforms, reporting predefined additional information associated with the event upon request from a ground facility, identifying one or more potential causes for the detected event and determining the occurrence probability for each potential cause identified.
    Type: Application
    Filed: June 23, 2015
    Publication date: May 11, 2017
    Applicant: BOMBARDIER INC.
    Inventors: Andy LAW, David CHEUNG
  • Patent number: 9613825
    Abstract: Provided herein are methods and apparatus of hydrogen-based photoresist strip operations that reduce dislocations in a silicon wafer or other substrate. According to various embodiments, the hydrogen-based photoresist strip methods can employ one or more of the following techniques: 1) minimization of hydrogen budget by using short processes with minimal overstrip duration, 2) providing dilute hydrogen, e.g., 2%-16% hydrogen concentration, 3) minimization of material loss by controlling process conditions and chemistry, 4) using a low temperature resist strip, 5) controlling implant conditions and concentrations, and 6) performing one or more post-strip venting processes. Apparatus suitable to perform the photoresist strip methods are also provided.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: April 4, 2017
    Assignee: Novellus Systems, Inc.
    Inventors: Roey Shaviv, Kirk Ostrowski, David Cheung, Joon Park, Bayu Thedjoisworo, Patrick J. Lord
  • Patent number: 9591738
    Abstract: Systems and methods of forming plasma are provided. In an embodiment, a plasma generator system is provided including a container, a single coil disposed around the container, the single coil being a single member and having a first end, a second end, a first winding, and a second winding, wherein the first winding extends from the first end, and the second winding is integrally formed as part of the first winding and extends to the second end, an energy source electrically coupled directly to the first end of the single member, and a capacitor electrically coupled directly to the second end of the single member.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: March 7, 2017
    Assignee: Novellus Systems, Inc.
    Inventors: Huatan Qiu, David Cheung, Prashanth Kothnur
  • Patent number: 9564344
    Abstract: Improved methods for stripping photoresist and removing ion implant related residues from a work piece surface are provided. According to various embodiments, plasma is generated using elemental hydrogen, a fluorine-containing gas and a protectant gas. The plasma-activated gases reacts with the high-dose implant resist, removing both the crust and bulk resist layers, while simultaneously protecting exposed portions of the work piece surface. The work piece surface is substantially residue free with low silicon loss.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: February 7, 2017
    Assignee: Novellus Systems, Inc.
    Inventors: David Cheung, Haoquan Fang, Jack Kuo, Ilia Kalinovski, Zhao Li, Guhua Yao, Anirban Guha, Kirk J. Ostrowski
  • Patent number: 9514954
    Abstract: Methods and apparatus for treating an organic film such as photoresist with a hydroxyl-generating compound prior to removing the organic film from a substrate are provided. Treatments include exposure to one or more of hydrogen peroxide vapor and water vapor in a non-plasma environment. In some implementations, conditions are such that condensation on the surface is suppressed. Methods include treating high-dose ion-implantation photoresists and post-plasma doping photoresists with little or no material loss and permit mild plasma removal of the photoresist after treatment.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: December 6, 2016
    Assignee: Lam Research Corporation
    Inventors: Bayu Atmaja Thedjoisworo, Bradley Jon Jacobs, Ivan Berry, David Cheung
  • Publication number: 20160285713
    Abstract: A method performed by a network device includes: receiving a first packet by the network device, wherein the first packet is tapped from a network; identifying a session to which the first packet belongs when the first packet has one or more values that at least partially match one or more terms, wherein the act of identifying the session is performed by the network device; receiving a second packet by the network device; determining whether the second packet belongs to the session; and performing a packet processing action by the network device based on the identified session; wherein the session is identified based on a first criterion, and the act of determining whether the second packet belongs to the session is performed based on a second criterion that is different from the first criterion.
    Type: Application
    Filed: March 27, 2015
    Publication date: September 29, 2016
    Applicant: Gigamon Inc.
    Inventors: Shehzad MERCHANT, David CHEUNG, Murali BOMMANA