Patents by Inventor David Pearce

David Pearce 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: 20080302671
    Abstract: This invention relates to an improved electrochemical process for winning platinum group and incidental precious metals from ore. The process utilizes a peroxide leach in combination with electricity to produce higher valency metals and comprises the following steps: combining ground ore with a solution comprising water with a selected amount of H2O2 and an anion source to form a slurry; applying a direct current while allowing the metal in the ore to leach into the solution for a selected period of time; filtering and clarifying the leached slurry to obtain a pregnant solution; and treating the pregnant solution to yield metal, metal salts or both.
    Type: Application
    Filed: November 9, 2007
    Publication date: December 11, 2008
    Inventors: David Pearce, Micheal Dana Pearce
  • Publication number: 20080277139
    Abstract: A cable joint includes at least two cables each having inner conducting elements. At least one of the cables has a layer of paper insulation impregnated with an oil. The inner conducting elements of the cables are secured to each other at a junction. A sealing tape has an inner layer and an outer layer. The sealing tape is wrapped about the junction such that the inner layer is in contact with the cables. The inner layer is provided with a deformable oil barrier including a sealing mastic that is resistant to chemical attack from the oil and resistant to migration of the oil there through. The outer layer carries the inner layer. The outer layer is provided with a substantially rigid tape that is resistant to deformation and expansion of the inner layer that forms a protective sleeve about the inner layer.
    Type: Application
    Filed: April 29, 2008
    Publication date: November 13, 2008
    Inventor: David Pearce
  • Publication number: 20080142071
    Abstract: A photovoltaic (PV) module includes a plurality of PV cells and a plurality of reconfigurable interconnects which electrically interconnect the plurality of PV cells.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Inventors: Randy Dorn, Bruce Hachtmann, David Harris, Ilan Gur, David Pearce, William Sanders, Ben Tarbell
  • Publication number: 20080053519
    Abstract: The invention provides a thin flexible photovoltaic cell for building integrated photovoltaic (BIPV) applications. The photovoltaic cell is deposited on a thin metallic substrate and is integrated with residential structures. These residential structures may be roofing slates, roofing tiles, building claddings and the like. An arrangement of conducting layers is described for increasing the conversion efficiency of the photovoltaic cell. The arrangement of the conducting layers result in high current collection. The photovoltaic cell is encapsulated by encapsulating layers, wherein the encapsulating layers are made of chemically inert and ultraviolet ray resistant polymers.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 6, 2008
    Inventors: David Pearce, Dennis Hollars
  • Publication number: 20070283996
    Abstract: A photovoltaic module includes a first photovoltaic cell, a second photovoltaic cell, and an interconnect comprising an electrically insulating carrier and at least one electrical conductor which electrically connects the first photovoltaic cell to the second photovoltaic cell.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventors: Bruce Hachtmann, Shefali Jaiswal, David Pearce, William Sanders, Ben Tarbell
  • Publication number: 20070128925
    Abstract: A heat-shrink tube for an electrical power cable comprises a sleeve having an insulating inner layer, a conductive outer layer and a thermoplastic mid-layer located between the inner and outer layers. The mid-layer is recovered by the application of heat thereto. The insulating inner layer is preferably comprised of an elastomeric material and the thermoplastic mid-layer is rigid and acts to retain the inner layer in a radially expanded state prior to its recovery.
    Type: Application
    Filed: November 12, 2004
    Publication date: June 7, 2007
    Inventors: Bernd Graeve, Peter Greiner, Franz Toerringer, David Pearce, Timothy Smith, John Stoker
  • Publication number: 20070074451
    Abstract: The present invention includes a method for producing a liquid inoculant containing a desiccant. The method can improve survival and stability of bacteria in liquid inoculants in pack and on seeds. The method includes providing a liquid inoculant of a bacterium grown to a substantially stationary phase. A desiccant treatment containing a desiccant is added to the liquid inoculant to form a partially desiccated inoculant product. The partially desiccated inoculant product can be packaged and stored. The partially desiccated inoculant product can also be applied to seeds.
    Type: Application
    Filed: June 23, 2006
    Publication date: April 5, 2007
    Applicant: Becker Underwood Inc.
    Inventors: Jeremy David Pearce, Mary Ann Carpenter, R.D. Piran Cargeeg, Guoping Yang
  • Publication number: 20070033020
    Abstract: A speech communication or computing device comprises at least one speech input device for receiving noisy speech uttered by a speaker. A speech processing function comprises a voice recognition function, which comprises a noise reduction function (235) having a Wiener Filter (335) with adjustable filter co-efficients. The speech input device also comprises multiple microphones (142, 144) configured to provide a substantially continuous noise signal to a noise spectrum estimation function (325) of the noise reduction function (235) to provide a substantially continuous estimate of noise. The noise estimate is used to adjust the filter co-efficients of the Wiener Filter (335), thereby removing noise from the noisy speech. A microphone array and a method for speech recognition are also described. By using the noise estimate from, say, a microphone array, the Wiener filter coefficients can be updated substantially continuously, for example, each speech frame.
    Type: Application
    Filed: January 23, 2004
    Publication date: February 8, 2007
    Inventors: Holly (Kelleher) Francois, David Pearce
  • Publication number: 20050269906
    Abstract: An electro-active actuator having a bender construction comprising layers of electro-active material and electrode layers for activation of the electro-active material, the layers of electro-active material being shaped to extend continuously along at least one curved portion and at least one substantially flat portion arranged with electrical terminals for electrical connection to the electrode layers.
    Type: Application
    Filed: November 11, 2003
    Publication date: December 8, 2005
    Applicant: 1... Limited
    Inventors: James Allan, David Pearce, Richard Topliss
  • Publication number: 20050074134
    Abstract: An actuator assembly comprises a first member (6a,6b), a second member (4a,4b) and at least one connecting arm (10a,10b) of fixed length connecting the first and second members (6a,6b;4a,4b). The assembly also comprises an actuator (12,14) which is operably engaged with the first member (6a,6b) so as to be capable of applying a rotating force to the first member (6a,6b). In use, rotational movement of the first member (6a,6b) causes relative linear movement of the first and second members (6a,6b;4a,4b) along an axis. The invention also relates to a loudspeaker driver unit and a sensor incorporating the actuator assembly. In the sensor embodiments, the actuator is an electrical transducer.
    Type: Application
    Filed: April 3, 2002
    Publication date: April 7, 2005
    Inventor: David Pearce
  • Publication number: 20050053565
    Abstract: The present invention relates to methods for identifying a hair growth modulating substance, to methods for preparing a pharmaceutical/cosmetic composition for treatment of hair growth disorders, to methods for treating a human being affected by a hair growth disorder, to hair growth modulating substances, to compositions comprising a substance which modulates the activity of SGK3 or causes a modulation of the activity of a SGK3-derived peptide in the above-mentioned “identifying” methods, and to a transgenic non-human sgk3?/? animal for investigating hair growth disorders.
    Type: Application
    Filed: September 9, 2003
    Publication date: March 10, 2005
    Inventors: Florian Lang, David Pearce, Jian Wang, James McCormick
  • Patent number: 6708235
    Abstract: A plurality of modems or modem types can run on a host processor, a digital signal processor or both, either concurrently or selectively. Modules of more than one modem program can be swapped in and out of DSP memory space. Common modem code can be run on either a host processor or on a DSP using respective command libraries.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: March 16, 2004
    Assignee: Intel Corporation
    Inventors: David Pearce, Wesley Smith, Karl Nordling, Amir Hindie, Karl Leinfelder, Sebastian Gracias, Jim Beaney
  • Patent number: 6549523
    Abstract: A method and apparatus for smooth transitions of background noise as a mobile communication unit roams from a first communication system having a first speech encoder (310) to a second communication system having a second speech encoder (330). As the mobile communication unit roams into the second communication system, the first communication system will transfer the communication signal to the second communication system. Background noise from the first communication system is sampled (320), and as the communication signal is transferred, the noise signal sampled in the first communication system is mixed in a mixer of the second communication system with background noise sampled (340) from the second communication system. As the change in noise progresses, the noise from the first communication system will gradually be decreased and faded out while the noise from the second communication system will be gradually increased to a high power level.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: April 15, 2003
    Assignee: Motorola, Inc.
    Inventors: Jonathan Alistair Gibbs, David Pearce, Dominic Chan, Andrew John Aftelak
  • Publication number: 20020108001
    Abstract: A plurality of modems or modem types can run on a host processor, a digital signal processor or both, either concurrently or selectively. Modules of more than one modem program can be swapped in and out of DSP memory space. Common modem code can be run on either a host processor or on a DSP using respective command libraries.
    Type: Application
    Filed: January 31, 2002
    Publication date: August 8, 2002
    Inventors: David Pearce, Wesley Smith, Karl Nordling, Amir Hindie, Karl Leinfelder, Sebastian Gracias, Jim Beaney
  • Patent number: 6374312
    Abstract: A plurality of modems or modem types can run on a host processor, a digital signal processor or both, either concurrently or selectively. Modules of more than one modem program can be swapped in and out of DSP memory space. Common modem code can be run on either a host processor or on a DSP using respective command libraries.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: April 16, 2002
    Assignee: Intel Corporation
    Inventors: David Pearce, Wesley Smith, Karl Nordling, Amir Hindie, Karl Leinfelder, Sebastian Gracias, Jim Beaney
  • Publication number: 20010044782
    Abstract: In one embodiment, the invention is a 64 bit hardware ID (H/W ID) for tying a software product to a particular computer to prevent software piracy. The 64 bit hardware ID represents ten different components of the user's computer: the CD-ROM device, the disk adapter, the disk device, the display adapter, the first drive serial number, the MAC address, the processor serial number, the processor type, the RAM size in Mb, and the SCSI adapter. Each time the software product is opened, the expanded H/W ID is compared to the hardware on the computer to determine whether a predetermined minimum number of components match. In one embodiment, the expanded H/W ID allows for expansion of the user's computer because so long as the component originally listed in the expanded H/W ID can be found on the computer, then that component matches the expanded H/W ID. Typically, seven out of ten components in the expanded H/W ID must match the computer before the software product will fully operate.
    Type: Application
    Filed: May 17, 2001
    Publication date: November 22, 2001
    Applicant: Microsoft Corporation
    Inventors: Aidan T. Hughes, David Pearce
  • Patent number: 5910951
    Abstract: A transmitting device (15) for communication over a multiplicity of networks having a communication manager (22) and a mobility manager (20). The mobility manager (20) includes a database (40) having a net table (42) of potential networks and a filter (38). The filter (38) generates a prioritized list of qualifying networks over which a data object is to be transferred. Also described is a method for sifting through and filtering the net table (42) of potential networks and their characteristics. A prioritized list of qualifying networks is generated wherein each qualifying network has a priority. A transmission request is generated based on a combination of the data object and the prioritized list of qualifying networks and is transmitted over the selected qualifying network (26), (28), or (30) having a highest priority.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: June 8, 1999
    Assignee: Motorola, Inc.
    Inventors: Michael David Pearce, Rodd Bryan Zurcher, Lewis B. Oberlander
  • Patent number: 5862452
    Abstract: A method, access point device and a perpherical device provide low complexity dynamic persistence for random access in a wireless communication system. The peripheral device includes: A) a block assignment receiver, for receiving a block assignment having a source address which contains a contention address and a persistence level and identifying the contention address and reading the persistence level; B) a random number generator, coupled to the block assignment receiver, for generating a random number based on the persistence level; and C) a persistence based transmitter, coupled to the random number generator, for transmitting a payload burst containing a resource request based on the random number and the persistence level.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: January 19, 1999
    Assignee: Motorola, Inc.
    Inventors: Mark Conrad Cudak, Michael David Pearce
  • Patent number: 5849284
    Abstract: The invention disclosed is related to a composition for the control of molluscs wherein an effective amount of infective dauer larvae of Phasmarhabditis nematodes which have been cultured with a nematode growth promoting and pathogenicity-inducing bacterium, as well as a carrier or encapsulation agent are provided as the ingredients for the composition. Further, the composition can be used in the form of a water-dispersable powder comprising as the carrier a calcium montmorillonite clay. The nematode concentration in the water-dispersable powder is 0.1.times.10.sup.6 to 2.0.times.10.sup.6 per gram of total composition (wet weight), and preferably from 0.3.times.10.sup.6 to 0.8.times.10.sup.6 per gram of the total composition (wet weight). Further, the nematodes are selected from amongst the species P. neopapillosa or P. hermaphrodita. The growth promoting bacterium is a Moraxella osloensis strain or Pseudomonas fluorescens strain.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: December 15, 1998
    Assignee: Agricultural Genetics Company Ltd.
    Inventors: Michael John Wilson, David McKellar Glen, Jeremy David Pearce
  • Patent number: 5548280
    Abstract: A local area network hub unit (5) has a plurality of switch units (16,17) connected in a ring. Each switch unit (16,17) may be connected to either an adjacent switch unit or to a group of pins of a connector unit (42). Each group of pins of the connector unit may be connected to respective end stations (8,9). Selected groups of two or more switch units (16,17) are connected to a common connector unit (42). Each group of pins of a connector unit (42) maybe coupled by a common coupling unit (7) to their respective end stations.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: August 20, 1996
    Assignee: Madge Networks Limited
    Inventor: David Pearce