Patents by Inventor Christopher J. MacDonald

Christopher J. MacDonald 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: 20240138693
    Abstract: A wrist-worn electronic device comprises a housing including a bottom wall configured to contact a user's wrist, an optical transmitter and receiver assembly and a processor. The optical transmitter and receiver assembly comprises a first optical transmitter array, a first optical receiver, a second optical transmitter array, and a second optical receiver. The first and second optical transmitter arrays transmit a plurality of first and second optical signals, respectively, that pass through a user's skin. The first and second optical receivers receive the first and second optical signals that travel along a first signal path and a second signal path, respectively, that are both substantially parallel to an arm axis of the user. The processor is configured determine physiological information about the user based on one or both of first and second electronic signals corresponding to the first and second optical signals.
    Type: Application
    Filed: September 1, 2023
    Publication date: May 2, 2024
    Inventors: Paul R. MacDonald, Christopher J. Kulach, Tim A. Verschaeve, Benjamin A. Primeau
  • Publication number: 20230331325
    Abstract: A method of supporting vehicle panel assemblies of different lengths for a measuring operation using a coordinate measurement machine is provided. The method includes supporting a first vehicle panel assembly having a first length on a holding gage assembly comprising horizontally aligned datum locations of a first set of datum members that support the first vehicle panel assembly thereon. A second vehicle panel assembly having a second length that is greater than the first length is supported on the datum locations of the first set of datum members. The second vehicle panel assembly extends longitudinally beyond the datum locations of the first set of datum members to at least one datum location of a second set of datum members.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 19, 2023
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Christopher J. MacDonald, Miguel R. Hernandez
  • Patent number: 11038030
    Abstract: A Field Effect Transistor (FET) having a source, drain, and gate disposed laterally along a surface of a semiconductor and a field plate structure: having one end connected to the source; and having a second end disposed between the gate and the drain and separated from the drain by a gap. A dielectric structure is disposed over the semiconductor, having: a first portion disposed under the second end of the field plate structure; and, a second, thinner portion under the gap.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: June 15, 2021
    Assignee: Raytheon Company
    Inventors: Christopher J. MacDonald, Kenneth A. Wilson, Kamal Tabatabaie Alavi, Adrian D. Williams
  • Patent number: 10840114
    Abstract: Apparatus and method for heating a wafer having semiconductor material. The apparatus includes: a chamber, a source of radiant heat; a source of gas; and a susceptor disposed in the chamber to receive and absorb heat radiated by the source of radiant heat; the susceptor having an opening therein to allow a flow of gas to pass from the source of gas to pass through an interior region of the susceptor and over the wafer.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: November 17, 2020
    Assignee: Raytheon Company
    Inventors: Kezia Cheng, Christopher J. MacDonald, Kamal Tabatabaie Alavi, Adrian D. Williams
  • Publication number: 20200243652
    Abstract: A Field Effect Transistor (FET) having a source, drain, and gate disposed laterally along a surface of a semiconductor and a field plate structure: having one end connected to the source; and having a second end disposed between the gate and the drain and separated from the drain by a gap. A dielectric structure is disposed over the semiconductor, having: a first portion disposed under the second end of the field plate structure; and, a second, thinner portion under the gap.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: Raytheon Company
    Inventors: Christopher J. MacDonald, Kenneth A. Wilson, Kamal Tabatabaie Alavi, Adrian D. Williams
  • Patent number: 10720497
    Abstract: A Field Effect Transistor (FET) having a source, drain, and gate disposed laterally along a surface of a semiconductor and a field plate structure: having one end connected to the source; and having a second end disposed between the gate and the drain and separated from the drain by a gap. A dielectric structure is disposed over the semiconductor, having: a first portion disposed under the second end of the field plate structure; and, a second, thinner portion under the gap.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 21, 2020
    Assignee: Raytheon Company
    Inventors: Christopher J. MacDonald, Kenneth A. Wilson, Kamal Tabatabaie Alavi, Adrian D. Williams
  • Patent number: 10541148
    Abstract: A stack of layers providing an ohmic contact with the semiconductor, a lower metal layer of the stack is disposed in direct contact with the semiconductor; and a radiation absorption control layer disposed over the lower layer for controlling an amount of the radiant energy to be absorbed in the radiation absorption control layer during exposure of the stack to the radiation during a process used to alloy the stack with the semiconductor to form the ohmic contact.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: January 21, 2020
    Assignee: Raytheon Company
    Inventors: Kezia Cheng, Kamal Tabatabaie Alavi, Adrian D. Williams, Christopher J. MacDonald, Kiuchul Hwang
  • Patent number: 10439035
    Abstract: A Schottky contact structure for a semiconductor device having a Schottky contact and an electrode for the contact structure disposed on the contact. The Schottky contact comprises: a first layer of a first metal in Schottky contact with a semiconductor; a second layer of a second metal on the first layer; a third layer of the first metal on the second layer; and a fourth layer of the second metal on the third layer. The electrode for the Schottky contact structure disposed on the Schottky contact comprises a third metal, the second metal providing a barrier against migration between the third metal and the first metal.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: October 8, 2019
    Assignee: Raytheon Company
    Inventors: Kamal Tabatabaie-Alavi, Kezia Cheng, Christopher J. MacDonald
  • Publication number: 20190198346
    Abstract: A stack of layers providing an ohmic contact with the semiconductor, a lower metal layer of the stack is disposed in direct contact with the semiconductor; and a radiation absorption control layer disposed over the lower layer for controlling an amount of the radiant energy to be absorbed in the radiation absorption control layer during exposure of the stack to the radiation during a process used to alloy the stack with the semiconductor to form the ohmic contact.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 27, 2019
    Applicant: Raytheon Company
    Inventors: Kezia Cheng, Kamal Tabatabaie Alavi, Adrian D. Williams, Christopher J. MacDonald, Kiuchul Hwang
  • Publication number: 20190123150
    Abstract: A Field Effect Transistor (FET) having a source, drain, and gate disposed laterally along a surface of a semiconductor and a field plate structure: having one end connected to the source; and having a second end disposed between the gate and the drain and separated from the drain by a gap. A dielectric structure is disposed over the semiconductor, having: a first portion disposed under the second end of the field plate structure; and, a second, thinner portion under the gap.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 25, 2019
    Applicant: Raytheon Company
    Inventors: Christopher J. MacDonald, Kenneth A. Wilson, Kamal Tabatabaie Alavi, Adrian D. Williams
  • Publication number: 20180323274
    Abstract: A Schottky contact structure for a semiconductor device having a Schottky contact and an electrode for the contact structure disposed on the contact. The Schottky contact comprises: a first layer of a first metal in Schottky contact with a semiconductor; a second layer of a second metal on the first layer; a third layer of the first metal on the second layer; and a fourth layer of the second metal on the third layer. The electrode for the Schottky contact structure disposed on the Schottky contact comprises a third metal, the second metal providing a barrier against migration between the third metal and the first metal.
    Type: Application
    Filed: July 12, 2018
    Publication date: November 8, 2018
    Applicant: Raytheon Company
    Inventors: Kamal Tabatabaie-Alavi, Kezia Cheng, Christopher J. MacDonald
  • Patent number: 10026823
    Abstract: A Schottky contact structure for a semiconductor device having a Schottky contact and an electrode for the contact structure disposed on the contact. The Schottky contact comprises: a first layer of a first metal in Schottky contact with a semiconductor; a second layer of a second metal on the first layer; a third layer of the first metal on the second layer; and a fourth layer of the second metal on the third layer. The electrode for the Schottky contact structure disposed on the Schottky contact comprises a third metal, the second metal providing a barrier against migration between the third metal and the first metal.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: July 17, 2018
    Assignee: Raytheon Company
    Inventors: Kamal Tabatabaie-Alavi, Kezia Cheng, Christopher J. MacDonald
  • Patent number: 10014266
    Abstract: A method and structure, the structure having a substrate, an active device in an active device semiconductor region; of the substrate, a microwave transmission line, on the substrate, electrically connected to the active device, and microwave energy absorbing “dummy” fill elements on the substrate. The method includes providing a structure having a substrate, an active device region on a surface of the structure, an ohmic contact material on the active device region, and a plurality of “dummy” fill elements on the surface to provide uniform heating of the substrate during a rapid thermal anneal process, the ohmic contact material and the “dummy” fill elements having the same radiant energy reflectivity. The rapid thermal anneal processing forms an ohmic contact between an ohmic contact material and the active device region and simultaneously converts the “dummy” fill elements into microwave lossy “dummy” fill elements.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: July 3, 2018
    Assignee: Raytheon Company
    Inventors: Fikret Altunkilic, Adrian D. Williams, Christopher J. MacDonald, Kamal Tabatabaie Alavi
  • Publication number: 20180033744
    Abstract: A method and structure, the structure having a substrate, an active device in an active device semiconductor region; of the substrate, a microwave transmission line, on the substrate, electrically connected to the active device, and microwave energy absorbing “dummy” fill elements on the substrate. The method includes providing a structure having a substrate, an active device region on a surface of the structure, an ohmic contact material on the active device region, and a plurality of “dummy” fill elements on the surface to provide uniform heating of the substrate during a rapid thermal anneal process, the ohmic contact material and the “dummy” fill elements having the same radiant energy reflectivity. The rapid thermal anneal processing forms an ohmic contact between an ohmic contact material and the active device region and simultaneously converts the “dummy” fill elements into microwave lossy “dummy” fill elements.
    Type: Application
    Filed: July 26, 2016
    Publication date: February 1, 2018
    Applicant: Raytheon Company
    Inventors: Fikret Altunkilic, Adrian D. Williams, Christopher J. MacDonald, Kamal Tabatabaie Alavi
  • Patent number: 9343328
    Abstract: A semiconductor structure having a substrate; an active device formed in an active semiconductor region of the substrate, the active device having a control electrode for controlling a flow of carriers through the active semiconductor region between a pair of electrical contacts; and a photolithographic, thickness non-uniformity, compensation feature, disposed on the surface substrate off of the active semiconductor region. In one embodiment the feature comprises pads on the surface of the substrate and off of the active semiconductor region.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: May 17, 2016
    Assignee: RAYTHEON COMPANY
    Inventors: Paul J. Duval, Paul M. Ryan, Christopher J. MacDonald
  • Publication number: 20150111379
    Abstract: A semiconductor structure having a substrate; an active device formed in an active semiconductor region of the substrate, the active device having a control electrode for controlling a flow of carriers through the active semiconductor region between a pair of electrical contacts; and a photolithographic, thickness non-uniformity, compensation feature, disposed on the surface substrate off of the active semiconductor region. In one embodiment the feature comprises pads on the surface of the substrate and off of the active semiconductor region.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 23, 2015
    Inventors: Paul J. Duval, Paul M. Ryan, Christopher J. MacDonald
  • Publication number: 20150097290
    Abstract: A structure having first and second electrical conductors disposed on a surface of the structure and a bridging conductor connected between the first electrical conductor and the second electrical conductor with portions disposed over the surface of the structure. The bridging conductor includes a plurality of stacked, multi-metal layers, each one of the multi-metal layers having: an electrically conductive layer; and a pair of barrier metal layers, the electrically conductive layer being disposed between and in direct contact with the pair of barrier metal layers.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Raytheon Company
    Inventors: Barry J. Liles, Kamal Tabatabale, Frederick A. Rose, Christopher J. MacDonald, Paul M. Ryan, Kurt V. Smith, Irl W. Smith
  • Publication number: 20140319586
    Abstract: A semiconductor structure having a substrate; an active device formed in an active semiconductor region of the substrate, the active device having a control electrode for controlling a flow of carriers through the active semiconductor region between a pair of electrical contacts; and a photolithographic, thickness non-uniformity, compensation feature, disposed on the surface substrate off of the active semiconductor region. In one embodiment the feature comprises pads on the surface of the substrate and off of the active semiconductor region.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Applicant: Raytheon Company
    Inventors: Paul J. Duval, Paul M. Ryan, Christopher J. MacDonald
  • Publication number: 20090171914
    Abstract: Systems and methods according to the present invention provide improved location of files over a network. More specifically, according to the present invention, a method of indexing digital video files on a content management system running on a web server includes associating a descriptive domain name with a dedicated node on the system, on which a single video is provided. Thus, each video is provided with a dedicated webpage, on which associated items, such as community feedback and attributes, may be displayed.
    Type: Application
    Filed: September 2, 2008
    Publication date: July 2, 2009
    Inventors: Harold S. Montgomery, Seth Ashby, Mathew DeBow, Christopher J. MacDonald, Thomas S. Litchfield
  • Patent number: 7056235
    Abstract: An improved golf training system and method of using the system is provided. The golf training system may also be used as a new game. The system includes a golf club having an enlarged hitting surface and shorter shaft, and a tee that comes in variable extended lengths. By gradually and incrementally lowering the length of the tee and extending the length of the club, a player is able to learn proper swing mechanics.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: June 6, 2006
    Inventor: Christopher J. MacDonald