Patents by Inventor David Welsh

David Welsh 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: 8639069
    Abstract: A wavelength-selective optical switch for switching arbitrary wavelengths between optical fibers in mesh networks, using interference filters for separating optical wavelengths, and two-dimensional arrays of micromirrors for switching. Broadband switch inputs and outputs are provided for adding and dropping arbitrary wavelengths at each node of the network. A two-stage multiplexer and two-stage demultiplexer are provided to simplify the free-space demultiplexer and multiplexer. Mechanisms are provided that allows full non-blocking functionality in the presence of finite yield of the micromirror arrays.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: January 28, 2014
    Assignee: Calient Technologies, Inc.
    Inventors: Roger Jonathan Helkey, John Edward Bowers, Xuezhe Zheng, David Welsh, Robert Anderson, Olivier Jerphagnon
  • Patent number: 7433838
    Abstract: Methods and apparatus for managing business interactions between opposing parties. Business interactions are mapped to service contracts. The service contracts are mapped to machine readable code. The machine readable code is defined by business transaction patterns and service interaction patterns. The machine readable code is consumed by an IT system. Management tasks associated with fulfilling obligations required by the business interactions are generated.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: October 7, 2008
    Assignee: Microsoft Corporation
    Inventors: David Welsh, Frederick C. Chong, James D. Clark, Max G. Morris
  • Publication number: 20080009101
    Abstract: Disclosed is a method of forming an integrated circuit structure that forms lead-free connectors on a device, surrounds the lead-free connectors with a compressible film, connects the device to a carrier (the lead-free connectors electrically connect the device to the carrier), and fills the gaps between the carrier and the device with an insulating underfill.
    Type: Application
    Filed: September 20, 2007
    Publication date: January 10, 2008
    Inventors: William Bernier, Tien-Jen Cheng, Marie Cole, David Eichstadt, Mukta Farooq, John Fitzsimmons, Lewis Goldmann, John Knickerbocker, Tasha Lopez, David Welsh
  • Publication number: 20070084629
    Abstract: Disclosed is a laminated (or non-laminated) conductive interconnection for joining an integrated circuit device to a device carrier, where the conductive interconnection comprises alternating metal layers and polymer layers. In addition, the polymer can include dendrites, metal projections from the carrier or device, and/or micelle brushes on the outer portion of the polymer. The polymer layers include metal particles and the alternating metal layers and polymer layers form either a cube-shaped structure or a cylinder-shaped structure.
    Type: Application
    Filed: October 5, 2006
    Publication date: April 19, 2007
    Inventors: William Bernier, Marie Cole, Mukta Farooq, John Knickerbocker, Tasha Lopez, Roger Quon, David Welsh
  • Publication number: 20060111926
    Abstract: Methods and apparatus for managing business interactions between opposing parties. Business interactions are mapped to service contracts. The service contracts are mapped to machine readable code. The machine readable code is defined by business transaction patterns and service interaction patterns. The machine readable code is consumed by an IT system. Management tasks associated with fulfilling obligations required by the business interactions are generated.
    Type: Application
    Filed: June 15, 2005
    Publication date: May 25, 2006
    Applicant: Microsoft Corporation
    Inventors: David Welsh, Frederick Chong, James Clark, Max Morris
  • Publication number: 20060043608
    Abstract: Disclosed is a laminated (or non-laminated) conductive interconnection for joining an integrated circuit device to a device carrier, where the conductive interconnection comprises alternating metal layers and polymer layers. In addition, the polymer can include dendrites, metal projections from the carrier or device, and/or micelle brushes on the outer portion of the polymer. The polymer layers include metal particles and the alternating metal layers and polymer layers form either a cube-shaped structure or a cylinder-shaped structure.
    Type: Application
    Filed: August 31, 2004
    Publication date: March 2, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: William Bernier, Marie Cole, Mukta Farooq, John Knickerbocker, Tasha Lopez, Roger Quon, David Welsh
  • Publication number: 20060040567
    Abstract: Disclosed is a method of forming an integrated circuit structure that forms lead-free connectors on a device, surrounds the lead-free connectors with a compressible film, connects the device to a carrier (the lead-free connectors electrically connect the device to the carrier), and fills the gaps between the carrier and the device with an insulating underfill.
    Type: Application
    Filed: August 20, 2004
    Publication date: February 23, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: William Bernier, Tien-Jen Cheng, Marie Cole, David Eichstadt, Mukta Farooq, John Fitzsimmons, Lewis Goldmann, John Knickerbocker, Tasha Lopez, David Welsh
  • Patent number: 6950215
    Abstract: An optical switching apparatus is provided. Generally, a plurality of optical input switches is provided. A plurality of optical output switches is provided. A plurality of central optical switches connected between the plurality of input switches and plurality of output switches is provided. A plurality of test light sources, where each test light source is connected to an optical input switch, is provided. A first plurality of optical detectors connected to the optical output switches is provided.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: September 27, 2005
    Assignee: Calient Networks
    Inventors: Walt Fant, Roger J. Helkey, Tony Walter, Peter Hunt, David Welsh
  • Patent number: 6819815
    Abstract: An optical switch embodiment includes a switching array of arranged to accomplish switching of input light beams to any of a plurality of output channels and an array of beam monitoring elements for indirectly measuring and providing information used for adjusting output beams. The beam monitoring element further includes means for measuring the angular misalignment and the positional misalignment of a monitor beam and adjusting the reflectors based on monitor beam information such that optical beams are output from the switch having the desired optical characteristics, such as optimized power. Another optical switch embodiment includes an array of rhomboid prism assemblies positioned to receive the output beams from the switching array and such that the beams are split into substantially parallel working and monitor beams.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: November 16, 2004
    Assignee: Calient Networks
    Inventors: Charles Corbalis, John E. Bowers, Shifu Yuan, David Welsh, Roger J. Helkey
  • Patent number: 6819824
    Abstract: Optical switch packaging techniques and optical switch components are described. In one aspect, an optical switch component that includes a die mounted on an interposer is described. The die has an exposed array of mirrors that can be used as part of an optical switch. Typically, the interposer will also have a fiber array mount arranged to receive a fiber bundle and to position the fiber bundle appropriately over the array of mirrors. In some embodiments, an optical switch can be formed by putting together two mirror image interposer based optical switch components. When placing two interposer based optical switch components together, an alignment frame may be positioned between the interposers to help maintain a desired spacing between the respective arrays of mirrors. In some such embodiments, an inner housing is provided that encloses the dice, the fiber array mounts the alignment frame and portions of the interposers, but leaves connectors mounted on the interposers exposed.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: November 16, 2004
    Assignee: Calient Networks
    Inventors: David Welsh, James R. Sechrist, John Edward Bowers, Adrian Keating, Xuezhe Zheng, David Kinghorn, Bart Erwin, Roger Jonathan Helkey, Paul Wills
  • Patent number: 6681473
    Abstract: A method and apparatus hermetically sealing a fiber array block is described. In one embodiment, a fiber array plate is fabricated and an array of tapered holes formed therein. An adhering metal layer, such as a titanium, nickel and gold multilayer, is deposited upon the fiber array plate. A solder preform is positioned on the fiber array plate so that the array of holes in the solder preform corresponds to the array of holes in the array plate. Fibers having an adhering metal layer deposited thereon, are then inserted through the fiber array plate. The tapered holes make the fiber insertion process easier. The fiber array plate is then heated such that the solder preform melts causing the solder to fill any gaps between the fiber array plates and the fiber. When the solder cools a hermetic seal is formed while the fibers remain accurately positioned.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: January 27, 2004
    Assignee: Calient Networks, Inc.
    Inventors: Bin Liu, R. Kehl Sink, David Welsh, Yuanjian Xu
  • Patent number: 6668108
    Abstract: An optical cross-connect with integrated optical signal tap is disclosed. In one embodiment, the switch includes two or more optical fiber input ports, lenses to produce collimated beams, one or more optical taps to couple a portion of the optical power from one or more input ports to one or more sample ports, movable mirrors to connect any input port with any output port, two or more optical fiber output ports, and lens to couple collimated beams into the output ports.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: December 23, 2003
    Assignee: Calient Networks, Inc.
    Inventors: Roger Helkey, John Bowers, Tony Walter, Kevin Yamada, David Welsh
  • Patent number: 6643425
    Abstract: An optical switch having switch mirror arrays controlled by scanning beams that reduce the amount of electrical connections required and reduce the complexity for constructing large optical switches. Movement of the switch mirror arrays is controlled by one or more scanning beams. The optical switch includes one or more arrays of optical switch inputs and outputs and one or more arrays of movable mirrors to direct light beams from the optical switch inputs to the optical switch outputs. The optical switch also includes one or more control elements to control the movable mirrors based on scanning beams directed to the one or more control elements.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: November 4, 2003
    Assignee: Calient Networks, Inc.
    Inventors: John Bowers, Chandrasekhar Pusarla, Kevin White, Dan Blumenthal, Roger Helkey, John Chong, David Welsh
  • Publication number: 20030012481
    Abstract: An optical switching apparatus is provided. Generally, a plurality of optical input switches is provided. A plurality of optical output switches is provided. A plurality of central optical switches connected between the plurality of input switches and plurality of output switches is provided. A plurality of test light sources, where each test light source is connected to an optical input switch, is provided. A first plurality of optical detectors connected to the optical output switches is provided.
    Type: Application
    Filed: July 11, 2001
    Publication date: January 16, 2003
    Inventors: Walt Fant, Roger J. Helkey, Tony Walter, Peter Hunt, David Welsh
  • Patent number: 5381190
    Abstract: A low vision lens for attachment to the front surface of an ophthalmic lens by an adhesive ring coupling carried by the lens, a method for making such a lens assembly, and a method for attaching such lens to the front surface of ophthalmic lens is described.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: January 10, 1995
    Assignee: Unilens Corp, U.S.A.
    Inventors: Denis Rehse, Frank Rumsey, Tim Petito, Samuel Garrett, Giovanna Olivares, David Welsh, Roger Antici, Josepha Bruno
  • Patent number: 4209594
    Abstract: An elastomeric blend having excellent resistance to oil is made from a block copolymer rubber and a graft copolymer made by copolymerizing a macromolecular monomer with one or more alkyl acrylates. The blends are especially useful in shoe sole compositions to impart oil resistance thereto.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: June 24, 1980
    Assignee: Arco Polymers, Inc.
    Inventors: David Welsh, Ralph Milkovich