Patents by Inventor David Powell

David Powell 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: 20180073424
    Abstract: Disclosed is a piston ported two-stroke compression ignition internal combustion engine comprising: a cylinder having a fixed closed end, and a piston for reciprocation within the cylinder, wherein the closed end of the cylinder and the piston together define a combustion chamber therebetween; at least one heater to heat the combustion chamber; and a controller to control the heater to heat the combustion chamber when the controller determines that a temperature of the combustion chamber has fallen below a threshold temperature during reciprocation of the piston within the cylinder.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 15, 2018
    Inventors: Christian Edward BUCKSEY, Huw David POWELL
  • Publication number: 20180074639
    Abstract: An accessory for a touch-sensitive display includes an image transfer structure and a capacitive marker. The image transfer structure is configured to relay or transfer, above the touch-sensitive display, an optical display plane of an image displayed by the touch-sensitive display. Further, the capacitive marker is capacitively-recognizable by the touch-sensitive display such that the touch-sensitive display visually presents the image in alignment with the image transfer structure.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 15, 2018
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Karlton David Powell, Pablo Luis Sala
  • Publication number: 20180077326
    Abstract: An electronic device comprising a split camera in front and back portions, and a retaining member. The front portion of the camera includes a set of front mounting features and a light-collecting unit configured to collect light from a subject. The back portion of the camera is reversibly separable from the front portion; it includes a set of back mounting features and an imaging unit configured to image the light. The set of back mounting features is configured to contact the set of front mounting features as the front and back portions are drawn together, forming, cooperatively, a kinematic mount to hold the light-collecting and imaging units in a state of alignment. The retaining member is configured to couple the front portion to the back portion when the front and back portions are drawn together and also when the front and back portions are separated.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 15, 2018
    Applicant: Microsoft Technology Licensing, LLC
    Inventor: Karlton David Powell
  • Patent number: 9884018
    Abstract: The present invention relates to a mesalamine rectal suppository designed to provide improved comfort of use. One embodiment of the invention is a mesalamine rectal suppository comprising mesalamine and one or more pharmaceutically acceptable excipients, wherein the drug load of the suppository ranges from 35% to 50%. Yet another embodiment of the invention is a mesalamine rectal suppository comprising mesalamine having a tap density ranging from about 600 to about 800 g/L (as measured by USP <616>) and a hard fat having an ascending melting point of 32 to 35.5° C. Yet another embodiment is a mesalamine rectal suppository comprising mesalamine particles and one or more pharmaceutically acceptable excipients, where the mesalamine particles have a surface area of from about 0.1 m2/g to about 2.8 m2/g (e.g., from about 0.1 m2/g to about 1.3 m2/g). Methods of preparing and methods of treatment with mesalamine suppositories are also provided.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: February 6, 2018
    Assignee: APTALIS PHARMA CANADA ULC
    Inventors: Carl Gauthier, Yves Dumoulin, David Powell, Hugues Moreau
  • Patent number: 9864119
    Abstract: An infrared filter includes a substrate having a front and surface. The infrared filter includes screened ink and an optically clear medium, or dye impregnated medium. The screened ink has a front surface nearest the substrate and a back surface. The screened ink has a first index of refraction. The optically clear medium abuts at least a portion of the back surface of the screened ink. The optically clear medium has a second index of refraction that differs from the first index of refraction of the screened ink by less than a predetermined amount. The dye impregnated medium has a spectral transmission over an infrared wavelength of greater than 70% and a spectral transmission over a visible light wavelength of less than 5%, while at same time maintaining MTF performance of a vision system imaging through the filter. Methods of manufacture are also described.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: January 9, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Karlton David Powell
  • Publication number: 20170285763
    Abstract: A 3D silhouette sensing system is described which comprises a stereo camera and a light source. In an embodiment, a 3D sensing module triggers the capture of pairs of images by the stereo camera at the same time that the light source illuminates the scene. A series of pairs of images may be captured at a predefined frame rate. Each pair of images is then analyzed to track both a retroreflector in the scene, which can be moved relative to the stereo camera, and an object which is between the retroreflector and the stereo camera and therefore partially occludes the retroreflector. In processing the image pairs, silhouettes are extracted for each of the retroreflector and the object and these are used to generate a 3D contour for each of the retroreflector and object.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 5, 2017
    Inventors: David KIM, Shahram IZADI, Vivek PRADEEP, Steven BATHICHE, Timothy Andrew LARGE, Karlton David POWELL
  • Publication number: 20170261758
    Abstract: Examples are disclosed that relate to optical systems. One example provides a display device comprising an image source including a plurality of encoded regions from which encoded image light is output, and a Fourier transform array. The Fourier transform array may be positioned to receive the encoded image light and output decoded image light that forms a floating image viewable from a plurality of different vantage points, wherein from a first vantage point decoded image light forming a portion of the floating image originates from a first encoded region, and wherein from a second vantage point decoded image light forming the portion originates from a second encoded region, different than the first encoded region.
    Type: Application
    Filed: February 9, 2017
    Publication date: September 14, 2017
    Applicant: Microsoft Technology Licensing, LLC
    Inventor: Karlton David Powell
  • Publication number: 20170237675
    Abstract: This application describes client devices that control network transmission based on a power state. The client device determines a power state of the computing device and a priority of an application executing on the computing device. The client device determines whether to permit the application to communicate with a remote network accessible device via the network communication hardware based at least on the priority of the application and the power state of the computing device. Also described is a power state service that selects a client device to be provided with a notification based on power states of the client devices.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 17, 2017
    Inventors: Harish Srinivasan, Chris C. Gray, Javier N. Flores Assad, Benjamin M. Schultz, David Powell, Alvin K. Tan, Jean Khawand
  • Patent number: 9720506
    Abstract: A 3D silhouette sensing system is described which comprises a stereo camera and a light source. In an embodiment, a 3D sensing module triggers the capture of pairs of images by the stereo camera at the same time that the light source illuminates the scene. A series of pairs of images may be captured at a predefined frame rate. Each pair of images is then analyzed to track both a retroreflector in the scene, which can be moved relative to the stereo camera, and an object which is between the retroreflector and the stereo camera and therefore partially occludes the retroreflector. In processing the image pairs, silhouettes are extracted for each of the retroreflector and the object and these are used to generate a 3D contour for each of the retroreflector and object.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: August 1, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: David Kim, Shahram Izadi, Vivek Pradeep, Steven Bathiche, Timothy Andrew Large, Karlton David Powell
  • Patent number: 9714727
    Abstract: A method and apparatus are disclosed for supporting a flexible pipe. The method includes the steps of responsive to a change in at least one condition experienced by a flexible pipe, varying an amount of support provided at at least one location on the flexible pipe.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: July 25, 2017
    Assignee: GE Oil & Gas UK Limited
    Inventors: Zhimin Tan, Michael David Powell, Yanqiu Zhang, Thomas Kolanski
  • Publication number: 20170185327
    Abstract: A storage system includes a communication fabric, a storage module, a client device having an object descriptor (OD) generator to generate object descriptors (ODs) to access data stored in storage devices of the storage module. The storage system further includes a first control module (CM) coupled to the client device and the storage module via the communication fabric to manage accesses of the storage module. The first CM is adapted to receive a request from client device to access a data object stored in the storage module, where the request includes an OD uniquely identifying the data object and created by the OD generator of the client device. In response, the first CM examines a first object descriptor table (ODT) associated with the first CM to determine whether the OD is valid, and if the OD is valid allows the storage module to service the request.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventor: David Powell
  • Patent number: 9653044
    Abstract: A display system comprises a head-mounted projector including an exit aperture and a projection engine to project image light through the exit aperture. The image light is projected onto a retro-reflective display that reflects image light in a first dimension at above 90% efficiency within a 25 degree exit angular spread and reflects image light in the first dimension below 10% efficiency outside of a 35 degree exit angular spread.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: May 16, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Timothy Andrew Large, Steven Bathiche, Karlton David Powell
  • Patent number: 9638841
    Abstract: Embodiments for optical diffusion devices are provided. In one example, an optical diffusion device comprises a first optical element including a first diffusing surface, a second optical element including a second diffusing surface, and an adhesive layer optically coupling the first diffusing surface to the second diffusing surface.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: May 2, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Liying Chen, Karlton David Powell
  • Patent number: 9612085
    Abstract: A payload launch system includes a launch tube, payload, rocket tube, pressurized motor assembly, and control system. The motor assembly has a launch actuator and an accumulator housing containing compressed gas. The accumulator housing defines a vent opening having a closure. The control system transmits an actuation signal to the actuator in response to a launch request signal to open the closure and cause a discharge of pressure into the launch tube. This causes the rocket tube to launch from the launch tube to a threshold altitude in a single gaseous thrust phase. A method includes deploying a launch system, transmitting a launch actuation signal to the launch actuator via a control system, and opening a closure to allow compressed gas to enter the launch tube, thereby launching the rocket tube from the launch tube to a threshold altitude in the single gaseous thrust phase.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: April 4, 2017
    Assignee: Sparton Corporation
    Inventors: David Powell, Earl Mark, Keith Huber, Taylor Durrance, Tanner Sizemore, Charles M. Nowell, Jr.
  • Publication number: 20170091548
    Abstract: Examples are disclosed herein that relate to user authentication. One example provides a biometric identification system comprising an iris illuminator, an image sensor configured to capture light reflected from irises of a user as a result of those irises being illuminated by the iris illuminator, a drive circuit configured to drive the iris illuminator in a first mode and a second mode that each cause the irises to be illuminated differently, the first and second modes thereby yielding a first mode output at the image sensor and a second mode output at the image sensor, respectively, and a processor configured to process at least one of the first mode output and the second mode output and, in response to such processing, select one of the first mode and the second mode for use in performing an iris authentication on the user.
    Type: Application
    Filed: September 24, 2015
    Publication date: March 30, 2017
    Inventors: Mudit Agrawal, Karlton David Powell, Christopher Maurice Mei
  • Publication number: 20170068027
    Abstract: An infrared filter includes a substrate having a front surface and a back surface. The infrared filter includes screened ink and an optically clear medium, or dye impregnated medium. The screened ink has a front surface nearest the substrate and a back surface. The screened ink has a first index of refraction. The optically clear medium abuts at least a portion of the back surface of the screened ink. The optically clear medium has a second index of refraction that differs from the first index of refraction of the screened ink by less than a predetermined amount. The dye impregnated medium has a spectral transmission over an infrared wavelength of greater than 70% and a spectral transmission over a visible light wavelength of less than 5%, while at same time maintaining MTF performance of a vision system imaging through the filter. Methods of manufacture are also described.
    Type: Application
    Filed: September 9, 2015
    Publication date: March 9, 2017
    Inventor: Karlton David Powell
  • Publication number: 20170027915
    Abstract: The present invention provides novel methods for treating Th2-mediated immune disorders and enhancing Th1-mediated immune responses in a subject comprising administering to the subject, a pharmaceutical composition comprising a serum-glucocorticoid regulated kinase 1 (SGK1) inhibitor and a pharmaceutically acceptable carrier. Methods for treating a wide range of autoimmune diseases are also taught. The present invention also provides methods for augmenting the treatment of subjects having viral or parasitic infections, or which have cancerous tumors.
    Type: Application
    Filed: March 7, 2016
    Publication date: February 2, 2017
    Inventors: Jonathan David Powell, Emily Beth Heikamp
  • Publication number: 20160368643
    Abstract: A package sorting system is described that can be used to efficiently sort and pack Ropak containers for transporting packages from a sorting facility to a destination facility. The package sorting system can determine a particular Ropak container to place the package in as well as determine if the package was placed in the current Ropak container.
    Type: Application
    Filed: June 20, 2016
    Publication date: December 22, 2016
    Applicant: Dicom Transportation Group
    Inventors: KIRK SERJEANTSON, Jean-Fracois GRAVEL, Patrick BEAUDOIN, Jean-Fracois BUSQUE, David POWELL, Jean-Luc PAMPIN, Olga AOUSLENDER
  • Patent number: 9494726
    Abstract: Embodiments for a backlight unit are provided. In one example, a backlight unit comprises a light guide configured to receive light at a first light interface located at an end of the light guide and output light via a second light interface located at a face of the light guide, and a plurality of light sources configured to inject light into the light guide at the first light interface. The example backlight unit also comprises a graded index film configured to receive light from the second light interface of the light guide, homogenize received light that is incident on the graded index film from within a range of acceptance angles and not homogenize light incident on the graded index film from outside of the range of acceptance angles, and direct the homogenized light toward an eye box.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: November 15, 2016
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Karlton David Powell
  • Publication number: 20160303562
    Abstract: Disclosed is a microfluidic device including a reagent supply apparatus comprising: a solid support 12 formed preferably from cellulose fibrous material having a porosity which allows liquid flow through the material; at least one generally dry reagent 16 stored on a surface of the support at a regent location or locations; the support further being suitable for storing biological sample material 17 in a dry state at a sample location or locations, spaced from the reagent location or locations.
    Type: Application
    Filed: October 8, 2014
    Publication date: October 20, 2016
    Applicant: GE HEALTHCARE UK LIMITED
    Inventors: Jeffrey Kenneth Horton, Simon Laurence John Stubbs, Peter James Tatnell, Geraint Seymour, Cheryl Louise Potts, Alan Stuart Pierce, David Powell, Alison Myfanwy Wakefield