Patents by Inventor Christopher A. Bowen

Christopher A. Bowen 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: 9773906
    Abstract: Methods of forming a layer of silicon germanium include forming an epitaxial layer of Si1-xGex on a silicon substrate, wherein the epitaxial layer of Si1-xGex has a thickness that is less than a critical thickness, hc, at which threading dislocations form in Si1-xGex on silicon; etching the epitaxial layer of Si1-xGex to form Si1-xGex pillars that define a trench in the epitaxial layer of Si1-xGex, wherein the trench has a height and a width, wherein the trench has an aspect ratio of height to width of at least 1.5; and epitaxially growing a suspended layer of Si1-xGex from upper portions of the Si1-xGex pillars, wherein the suspended layer defines an air gap in the trench beneath the suspended layer of Si1-xGex.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: September 26, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wei-E Wang, Mark S. Rodder, Ganesh Hedge, Christopher Bowen
  • Publication number: 20170263728
    Abstract: A stack for a semiconductor device and a method for making the stack are disclosed. The stack includes a plurality of sacrificial layers in which each sacrificial layer has a first lattice parameter; and at least one channel layer that has a second lattice parameter in which the first lattice parameter is less than or equal to the second lattice parameter, and each channel layer is disposed between and in contact with two sacrificial layers and includes a compressive strain or a neutral strain based on a difference between the first lattice parameter and the second lattice parameter.
    Type: Application
    Filed: September 15, 2016
    Publication date: September 14, 2017
    Inventors: Jorge A. KITTL, Ganesh HEGDE, Robert Christopher BOWEN, Borna J. OBRADOVIC, Mark S. RODDER
  • Patent number: 9536886
    Abstract: A semiconductor device includes a first diode connected transistor of a first conductivity type and a second diode connected transistor of a second conductivity type connected in series, each of the first and second diode connected transistors being configured to exhibit negative differential resistance in response to an applied voltage. The first drain and first source regions of the first diode connected transistor include dopants of the first conductivity type at degenerate dopant concentration levels and a gate of the first diode connected transistor has a work function that corresponds to that of the semiconductor containing dopants of the second conductivity type. The second drain and second source regions of the second diode connected transistor include dopants of the second conductivity type at degenerate dopant concentration levels and a gate of the second diode connected transistor has a work function that corresponds to that of the semiconductor containing dopants of the first conductivity type.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: January 3, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Christopher Bowen
  • Publication number: 20160322493
    Abstract: Methods of forming a layer of silicon germanium include forming an epitaxial layer of Si1-xGex on a silicon substrate, wherein the epitaxial layer of Si1-xGex has a thickness that is less than a critical thickness, hc, at which threading dislocations form in Si1-xGex on silicon; etching the epitaxial layer of Si1-xGex to form Si1-xGex pillars that define a trench in the epitaxial layer of Si1-xGex, wherein the trench has a height and a width, wherein the trench has an aspect ratio of height to width of at least 1.5; and epitaxially growing a suspended layer of Si1-xGex from upper portions of the Si1-xGex pillars, wherein the suspended layer defines an air gap in the trench beneath the suspended layer of Si1-xGex.
    Type: Application
    Filed: January 20, 2016
    Publication date: November 3, 2016
    Inventors: Wei-E Wang, Mark S. Rodder, Ganesh Hedge, Christopher Bowen
  • Publication number: 20160260721
    Abstract: A semiconductor device includes a first diode connected transistor of a first conductivity type and a second diode connected transistor of a second conductivity type connected in series, each of the first and second diode connected transistors being configured to exhibit negative differential resistance in response to an applied voltage. The first drain and first source regions of the first diode connected transistor include dopants of the first conductivity type at degenerate dopant concentration levels and a gate of the first diode connected transistor has a work function that corresponds to that of the semiconductor containing dopants of the second conductivity type. The second drain and second source regions of the second diode connected transistor include dopants of the second conductivity type at degenerate dopant concentration levels and a gate of the second diode connected transistor has a work function that corresponds to that of the semiconductor containing dopants of the first conductivity type.
    Type: Application
    Filed: February 17, 2016
    Publication date: September 8, 2016
    Inventor: Christopher Bowen
  • Publication number: 20160079372
    Abstract: A semiconductor device can include a channel region with a first semiconductor material for a majority carrier in the channel region during operation (on state) of the device and a metal contact. A source/drain region can include a semiconductor material alloy including a second semiconductor material and at least one heterojunction located between the metal contact and the channel region, wherein the heterojunction forms a band-edge offset for the majority carrier that is less than or equal to about 0.2 eV.
    Type: Application
    Filed: November 16, 2015
    Publication date: March 17, 2016
    Inventors: Jorge A. Kittl, Borna Josip Obradovic, Robert Christopher Bowen, Mark S. Rodder
  • Patent number: 8315899
    Abstract: A method and apparatus for scheduling are disclosed. The apparatus applies tests to microscope slides, where the slides are loaded in trays. Each tray is treated as a batch, and batches may be interleaved to reduce the total running time of testing all slides in up to three batches. The batches of slides have protocols that define the application of reagents such as primary antibodies. The protocols define open times, where no common resources are used, and use times, where common resources are used. The scheduler operates to ensure that the use times between batches does not overlap, without leaving the next step in the protocol for an excessive period of time.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: November 20, 2012
    Assignee: Leica Biosystems Melbourne Pty Ltd
    Inventors: Frank Samuhel, Stuart Lucas, Christopher Bowen
  • Patent number: 8231957
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.25 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: July 31, 2012
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Christopher Bowen, Kevin Edward Dove, Carl Jones, Raymond B. Minor
  • Patent number: 8158235
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.25 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: April 17, 2012
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Christopher Bowen, Kevin Edward Dove, Carl Jones, Raymond B. Minor
  • Publication number: 20110175298
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between .025 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Application
    Filed: March 15, 2011
    Publication date: July 21, 2011
    Inventors: Christopher Bowen, Kevin Edward Dove, Carl Jones, Raymond B. Minor
  • Patent number: 7829170
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.25 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: November 9, 2010
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Christopher Bowen, Kevin Edward Dove, Carl Jones, Raymond B. Minor
  • Patent number: 7829171
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.25 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: November 9, 2010
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Christopher Bowen, Kevin Edward Dove, Carl Jones, Raymond B. Minor
  • Publication number: 20100009180
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.025 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Application
    Filed: September 22, 2009
    Publication date: January 14, 2010
    Inventors: Christopher Bowen, Kevin Edward Dove, Carl Jones, Raymond B. Minor
  • Patent number: 7448289
    Abstract: A manual transmission includes an input shaft operatively connected to a source of motive power and a countershaft in axially parallel relationship with the input shaft. The manual transmission also includes an output shaft in axially parallel relationship with the counter shaft. The manual transmission further includes a plurality of gear set pairs disposed between the input shaft and the counter shaft such that the gear sets provide different gear ratios for transferring torque from the input shaft to the output shaft, each of the gear sets including a driver gear operatively supported by the input shaft such that the driver gear receives only torque from the source of motive power.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: November 11, 2008
    Assignee: Dymos Co., Ltd.
    Inventors: Thomas Christopher Bowen, Marius Octavel Enache
  • Publication number: 20080065529
    Abstract: In a method and system for securitizing contracts valued on an index, a special purpose entity (SPE) is provided and holds as substantially all of its assets a derivative contract with a contract dealer. The contract has an initial notional value and is tied to an index related to items traded by a multilateral transactional execution facility, such as futures contracts traded on an exchange. The held contract is also scalable so that the notional value can be increased on demand in exchange for a corresponding payment to the contract dealer and decreased on demand in exchange for a corresponding payment from the contract dealer. The SPE issues exchange tradable securities that derive value based on the value of the contract held by the SPE. To issue additional shares, assets are contributed to the contract dealer who increases the notional value of the contract held by the SPE. The increase in value of the contract supports the issuance of additional shares.
    Type: Application
    Filed: November 5, 2007
    Publication date: March 13, 2008
    Inventors: Christopher Bowen, Donald Carden, Zoltan Guttman, Richard Horowitz, David Salomon, Lanny Schwartz, David Yeres
  • Publication number: 20080029964
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.025 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 7, 2008
    Inventors: Christopher Bowen, Kevin Dove, Carl Jones, Raymond Minor
  • Publication number: 20080029974
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.025 and 4, an orientation index of 500 or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 7, 2008
    Inventors: Christopher Bowen, Kevin Dove, Carl Jones, Raymond Minor
  • Publication number: 20080029965
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.025 and 4, an orientation index of 50° or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 7, 2008
    Inventors: Christopher Bowen, Kevin Dove, Carl Jones, Raymond Minor
  • Publication number: 20080029975
    Abstract: Improved expanded PTFE materials and improved gasket materials made therefrom, the gaskets being capable of forming a seal with greater bolt load retention than is possible with existing PTFE gaskets. The expanded PTFE membranes of the invention can be tailored to exhibit a matrix tensile strength in at least one direction of at least 25,000 psi, a matrix tensile strength ratio in two orthogonal directions of between 0.025 and 4, an orientation index of 500 or less, and a density of 2.0 g/cc or less. The improved gaskets exhibit improved mechanical properties such as high bolt load retention, low creep, high tensile strength, low stress to seal and high crystallinity index.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 7, 2008
    Inventors: Christopher Bowen, Kevin Dove, Carl Jones, Raymond Minor
  • Publication number: 20070038491
    Abstract: A method and apparatus for scheduling are disclosed. The apparatus applies tests to microscope slides, where the slides are loaded in trays. Each tray is treated as a batch, and batches may be interleaved to reduce the total running time of testing all slides in up to three batches. The batches of slides have protocols that define the application of reagents such as primary antibodies. The protocols define open times, where no common resources are used, and use times, where common resources are used. The scheduler operates to ensure that the use times between batches does not overlap, without leaving the next step in the protocol for an excessive period of time.
    Type: Application
    Filed: February 24, 2004
    Publication date: February 15, 2007
    Applicant: VISION BIOSYSTEMS LIMITED
    Inventors: Frank Samuhel, Stuart Lucas, Christopher Bowen