Patents by Inventor David Johns

David Johns 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: 6854336
    Abstract: Stress in the wall of a pipe (12) is measured using a pig (10) carrying at least one linear array of probes, so that the probes (30) in the array pass in succession over a location on the pipe wall. Each probe (30) comprises an electromagnetic core (32) with two spaced apart electromagnetic poles (34), and a magnetic sensor (36) arranged to sense the reluctance of that part of the magnetic circuit between the poles (34), and an alternating magnetic field is generated in the electromagnet means and consequently in the pipe wall. Successive probes (30) in the array are oriented differently so that the corresponding orientations of the magnetic field in the pipe wall are different. Preferably the probes (30) also include sensors (38) between the two poles (34) to sense magnetic flux perpendicular to the direction of the free space magnetic field between the poles. The signal from the sensor (36) and (38) enable the stress to be determined. Such an array may be used with any long object of ferromagnetic material.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: February 15, 2005
    Assignee: AEA Technologoy PLC
    Inventor: David John Buttle
  • Patent number: 6852913
    Abstract: According to the invention, there is provided a novel soybean variety, designated 90M90. This invention thus relates to the seeds of soybean variety 90M90, to the plants of soybean 90M90 to plant parts of soybean variety 90M90 and to methods for producing a soybean plant produced by crossing soybean variety 90M90 with another soybean plant, using 90M90 as either the male or the female parent. This invention also relates to methods for producing a soybean plant containing in its genetic material one or more transgenes and to the transgenic soybean plants and plant parts produced by those methods. This invention also relates to soybean varieties or breeding varieties and plant parts derived from soybean variety 90M90, to methods for producing other soybean varieties, lines or plant parts derived from soybean variety 90M90 and to the soybean plants, varieties, and their parts derived from use of those methods.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: February 8, 2005
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Martin Arthur Fabrizius, Michael Thomas Roach, David John Gebhardt
  • Patent number: 6851915
    Abstract: The subject of the invention is a load handling device for an industrial truck having a lift frame, a lift carriage which can be displaced along the lift frame, and a reach carriage guided so as to move on the lift carriage. A load pick-up device is arranged on the reach carriage. According to the invention, the lift carriage is guided on the outer sides of the lift frame by rollers, and the reach carriage is guided on the outer sides of the lift carriage. In order to displace the reach carriage, a hydraulic reach cylinder is provided on each side of the lift frame and is fixed at one end to the lift carriage and at the other end to the reach carriage.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: February 8, 2005
    Assignee: Linde Aktiengesellschaft
    Inventors: Barry Michael Warner, David John Brown
  • Patent number: 6852794
    Abstract: There is disclosed a pneumatic tire having a rubberized component comprising: (a) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (b) 1 to 110 phr of a polyhedral oligomeric silsesquioxanes.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: February 8, 2005
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Aaron Scott Puhala, David John Zanzig, Brian David Holden, Neil Arthur Maly
  • Patent number: 6852731
    Abstract: The invention provides a compound of formula I: wherein G, R2, R3, and R4 have any of the values defined in the specification, or a pharmaceutically acceptable salt thereof, as well as processes and intermediates useful for preparing such compounds or salts, and methods of preventing or treating a herpesvirus infection using such compounds or salts.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: February 8, 2005
    Assignee: Pfizer
    Inventors: Scott D. Larsen, Paul May, Karen Romines, Mark E. Schnute, Steven P. Tanis, James A. Nieman, David John Anderson, Euibong J. Kim, Steven R. Turner
  • Patent number: 6850055
    Abstract: The variation in properties of a ferromagnetic material with depth below the surface is assessed in a nondestructive fashion using a probe that incorporates an electromagnet. An alternating magnetic field is generated in the electromagnet and so in the object, and a magnetic sensor is arranged to sense a magnetic field due to the electromagnet. Signals from the magnetic sensor are analysed into an in-phase component and a quadrature component, and these are mapped directly into material property and lift-off components; this analysis enables accurate measurements of material property (such as stress) to be distinguished from changes in lift-off. The measurements are repeated for at least five different frequencies of the alternating magnetic field; and the measurements at different frequencies are deconvolved assuming a functional form for the variation of material property with depth, the function having no more than five unknown constants. The stress at depths for example in the range 0.5 mm to 5.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: February 1, 2005
    Assignee: AEA Technology plc
    Inventor: David John Buttle
  • Patent number: 6849788
    Abstract: According to the invention, there is provided a soybean variety designated 91M90. This invention thus relates to the seeds of soybean variety 91M90, to plants and parts thereof of variety 91M90, tissue culture methods and to methods for producing a soybean plant by crossing plants of the soybean variety 91M90 with another soybean plant, using 91M90 as either the male or the female parent.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: February 1, 2005
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Martin Arthur Fabrizius, Michael Thomas Roach, David John Gebhardt
  • Patent number: 6845773
    Abstract: A method and apparatus for determining suitable settings for a servo-ventilator to be used during sleep. Respiratory characteristics of a patient are measured during an awake learning period. With these measured characteristics, a target ventilation setting may be calculated by alternative methods. The calculated setting may then be used for enforcing a minimum ventilation during a treatment period where ventilatory support is provided with a servo-controlled ventilator.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: January 25, 2005
    Assignee: Resmed Limited
    Inventors: Michael Berthon-Jones, Peter Edward Bateman, David John Bassin, Gordon John Malouf
  • Patent number: 6843934
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: January 18, 2005
    Assignee: Honeywell International Inc.
    Inventors: Leslie Bruce Bement, Mary Charlotte Bogdan, Clayton Herbert Carson, Peter Brian Logsdon, Hang Thanh Pham, Rajiv Ratna Singh, Hsueh Sung Tung, Ronald Riegal, David John Williams, Kevin Donald Uhrich
  • Patent number: 6840309
    Abstract: A heat exchanger comprising a pressure vessel (1). A plurality of serpentines (8) convey a fluid to be heated through the pressure vessel (1) in one direction. A duct (9) surrounding the serpentines (8) conveys a second fluid in the opposite direction to give up its heat to the first fluid. The duct (9) is spaced from the pressure vessel (1) and is surrounded with thermal insulation (23). An opening in the duct (9) equalizes the pressure between the inside and the outside of the duct (9) which is also supported against expansion caused by the pressure inside the duct (9) exceeding the pressure outside the duct (9).
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: January 11, 2005
    Assignee: Innogy Plc
    Inventors: Alexander Bruce Wilson, Michael Willoughby Essex Coney, David John Gooch, Birendra Nath, Andrew Powell
  • Patent number: 6838873
    Abstract: A Position Sensor comprises: one or more excitation windings; a signal generator adapted to apply excitation signals to the or each excitation winding; tag means displaceable relative to said excitation windings; one or more sensor windings electromagnetically coupled to said excitation windings such that in response to said excitation signals being applied to said excitation windings, there is generated sensed signal in the or each sensor winding; and a signal processor adapted to process said sensed signals to determine the position of said tag means in any location in the X, Y and Z planes essentially in accordance with phase values or in accordance with phase values and amplitude values.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: January 4, 2005
    Assignee: Scientific Generics Ltd.
    Inventors: David Alun James, Darran Kreit, Ross Peter Jones, David John Stocks
  • Patent number: 6838511
    Abstract: This invention relates to a pneumatic rubber tire having a circumferential rubber tread of a lug and groove configuration which extends to a substantial portion an adjacent rubber sidewall and is designed to be ground-contacting. Said lug and groove configured portion of said sidewall is of a rubber composition comprised of a blend of cis 1,4-polyisoprene natural rubber and cis 1,4-polybutadiene rubber which contains reinforcement as carbon black, starch/plasticizer composite and aggregates of participated silica together with a coupling agent. Said circumferential rubber tread is of a rubber composition comprised of at least one diene-based rubber together with carbon black reinforcement and is exclusive of starch and precipitated silica.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: January 4, 2005
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: David John Zanzig
  • Patent number: 6837668
    Abstract: A floor constituted by a flexible belt (23), resting on the upper surface of a loadbearing base, has one end connected to a headboard (17) and the other end connected to a winch (28). A cable (33) has one end connected to the headboard and the other end connected to the winch. A guide system for the cable including a compensating mechanism (36, 56, 57) which varies the path of the cable during rotation of the winch, so as to compensate for a difference between the belt diameter and the cable diameter on the winch, the difference varying as the belt is wound and unwound.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: January 4, 2005
    Assignee: Multidrive Limited
    Inventor: David John Bowes Brown
  • Publication number: 20040265902
    Abstract: A probe comprises: (1) a target binding site moiety which is attached to a first fluorescent polypeptide; (ii) a mimic moiety which is capable of binding to the target binding site moiety and is attached to a second fluorescent polypeptide; and (iii) a linker which connects the two fluorescent polypeptides and which allows the distance between said fluorescent polypeptides to vary, said fluorescent polypeptides being so as to display fluorescence resonance energy transfer (FRET) between them, wherein the linker comprises one or more of: (1) a sequence capable of being recognised and bound by an immobilized component; (2) a protease cleavage site; (3) a non-analyte binding site; (4) two or more copies of the sequence (SerGly3); or (5) one or more copies of a rod domain from a structural protein.
    Type: Application
    Filed: August 11, 2004
    Publication date: December 30, 2004
    Inventors: Mark David Fricker, David John Talbut Vaux
  • Publication number: 20040262215
    Abstract: A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.
    Type: Application
    Filed: July 19, 2004
    Publication date: December 30, 2004
    Inventors: Fufang Zha, David John Cox
  • Publication number: 20040256773
    Abstract: A solids feed means for a direct smelting plant is disclosed. The solids feed means includes 2 or more pairs of lances for injecting solid feed materials for a direct smelting process into a direct smelting vessel. The solids feed means also includes a main supply line and a pair of branch lines for supplying solid feed material to the lances of each pair of lances with the branch lines interconnecting the main supply line and the lances of the pair of lances. The lances are arranged around the vessel in pairs of diametrically opposed lances. At least one pair of lances is provided for injecting metalliferous feed material (such as iron-containing materials, particularly iron ore fines) and at least one of the other pairs of lances is provided for injecting solid carbonaceous material (such as coal) and optionally fluxes. The pairs of lances are arranged around the vessel so that adjacent lances are lances that are provided to inject different materials.
    Type: Application
    Filed: April 12, 2004
    Publication date: December 23, 2004
    Inventors: Rodney James Dry, David John Leigh
  • Publication number: 20040254164
    Abstract: Compounds according to formula (I) wherein n is 0-3, R′ is optionally substituted C1-6 alkyl, C2-6 alkenyl, or C2-6 alkynyl, Heterocycle, Aromatic heterocycle, Aryl or hydrogen and R2, R3, R4, R5, R6, R7, R8 and R9 are each independently selected from hydrogen and optionally substituted C1-6 alkyl, or R5 and R8 are an alkylene chain, are novel. They are useful in the treatment of thrombotic conditions and other pathologies associated with fibrin deposition.
    Type: Application
    Filed: March 29, 2004
    Publication date: December 16, 2004
    Applicant: Pfizer Inc.
    Inventors: Charlotte Moira Norfor Allerton, David John Bull, Mark Edward Bunnage, Robert John Maguire, John Steele
  • Publication number: 20040250812
    Abstract: An inhalation device is described for use with a medicament pack in which at least one container for medicament in powder form is defined between two sheets peelably secured to one another. The device comprises means for peeling the sheets apart at an opening station to open the container; and an outlet, communicating with the opened container, through which a user can inhale medicament in powder form from the opened container.
    Type: Application
    Filed: July 14, 2004
    Publication date: December 16, 2004
    Inventors: Michael Birsha Davies, David John Hearne, Paul Kenneth Rand, Richard Ian Walker
  • Patent number: 6832254
    Abstract: Method and apparatus for associating an end-to-end call identifier with a connection in a multimedia packet network. An end-to-end call identifier (EECID) is provided to uniquely identify a call leg across a packet network, regardless of the number of nodes used in completing the network path. The EECID allows for call association with a bearer connection so that high level call processing and low level bearer connection management can function independently but correlated by media gateways and media gateway controllers. Either a media gateway or media gateway controller can generate the EECID before establishing a connection for a call. The EECID is then sent to remote media gateways and media gateway controllers. The bearer connection can be setup by a media gateway at either end of the connection with respect to where the EECID is generated.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: December 14, 2004
    Assignee: Nortel Networks Limited
    Inventors: Shwu-Yan Chang Scoggins, Charles Michael Brown, David John Jarzemsky, Stanley Wayne Joyner, Kathleen Kelley Schellenberger
  • Publication number: 20040247648
    Abstract: A consumable film adapted to adhere to and dissolve in the oral cavity of a warm-blooded animal including humans, comprising a modified starch, a pharmaceutically active agent and, optionally, at least one water soluble polymer.
    Type: Application
    Filed: May 3, 2004
    Publication date: December 9, 2004
    Inventors: David John Fadden, Neema Kulkarni, Albert Sorg