Patents by Inventor John Porter

John Porter 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: 20060065342
    Abstract: This invention provides facing materials for cementitious boards such as those including Portland cement or gypsum cores. The preferred facing material includes, in a first embodiment, a facing layer having an areal weight of about 300 grams/M2, and an air permeability rating of no greater than about 300 CFM/ft2 (FG 436-910 test method). The facing layer reduces the penetration of a slurry of cementitious material during the manufacture of a cementitious board, while permitting the water vapor from the slurry to pass therethrough. The facing materials of this invention can be designed to substantially eliminate the fouling of rolls used in continuous processing of such boards without the use, or with greatly reduced use, of costly viscosity control agents in the slurry.
    Type: Application
    Filed: November 16, 2005
    Publication date: March 30, 2006
    Inventor: John Porter
  • Publication number: 20060038269
    Abstract: The present invention provides a lubricant container inside a microelectromechanical device package. The lubricant container contains selected lubricant that evaporates from the container and contact to a surface of the microelectromechanical device for lubricating the surface.
    Type: Application
    Filed: October 20, 2005
    Publication date: February 23, 2006
    Inventors: Jim Dunphy, Dmitri Simonian, John Porter
  • Publication number: 20060028287
    Abstract: A method of finding an unknown value from within a range of values is disclosed that divides the range into weighted subranges and then, beginning with an arbitrary search value within the range, performs a number of simple comparisons to determine the value for each subrange that will result in a match with the target value. This method can also detect those cases where the target value lies outside the range. In one embodiment, the method of finding an unknown value within a range of values is applied to impedance matching. In this embodiment, the output impedance of a pin on an integrated circuit is automatically matched to the impedance of the load connected to it. The output driver has a controllable impedance that can be adjusted within a specific range of impedances to match the external load impedance it is to drive.
    Type: Application
    Filed: October 7, 2005
    Publication date: February 9, 2006
    Inventors: William Thompson, John Porter, Larren Weber
  • Publication number: 20060013950
    Abstract: Fabric and reinforcements are provided by this invention which, in a first embodiment, include a plurality of warp yarns having a first twist (turns/inch) and a plurality of weft yarns having a second twist which is greater than the first twist. A coating is applied over a substantial portion of the warp and weft yarns after they are assembled or laid together, so as to produce a weight distribution ratio of less than about 2.0:1, based upon the weight of the resinous coating of the weft yarns over the weight of the resinous coating on the warp yarns. This can be achieved, in substantial part, due to the difference in the twist ratios of the warp and weft yarns, which difference permits a more uniform coating to be applied. Further embodiments of this invention include a cementitious board and methods of making a coated fabric and cementitious board.
    Type: Application
    Filed: September 21, 2005
    Publication date: January 19, 2006
    Inventors: John Porter, Geraint Roberts
  • Publication number: 20060007515
    Abstract: Lubricants for lubricating surfaces of microelectromechanical devices are disclosed. Specifically, the lubricants can be applied to the contacting surfaces of the microelectromechanical devices so as to remove stiction of the contacting surfaces.
    Type: Application
    Filed: July 12, 2004
    Publication date: January 12, 2006
    Inventors: Dmitri Simonian, John Porter
  • Publication number: 20050286288
    Abstract: An SRAM memory cell is provided having a pair of cross-coupled CMOS inverters. The sources of the pull-up transistors forming each of the CMOS inverters are coupled to VCC through parasitic resistance of the substrate in which each is formed. The source of the p-type pull-up transistor is therefore always at a potential less than or equal to the potential of the N-well such that the emitter-base junction of the parasitic PNP transistor cannot become forward biased and latch-up cannot occur.
    Type: Application
    Filed: August 31, 2005
    Publication date: December 29, 2005
    Inventors: John Porter, William Thompson
  • Publication number: 20050287736
    Abstract: An SRAM memory cell is provided having a pair of cross-coupled CMOS inverters. The sources of the pull-up transistors forming each of the CMOS inverters are coupled to VCC through parasitic resistance of the substrate in which each is formed. The source of the p-type pull-up transistor is therefore always at a potential less than or equal to the potential of the N-well such that the emitter-base junction of the parasitic PNP transistor cannot become forward biased and latch-up cannot occur.
    Type: Application
    Filed: August 31, 2005
    Publication date: December 29, 2005
    Inventors: John Porter, William Thompson
  • Patent number: 6979893
    Abstract: The present invention provides a lubricant container inside a microelectromechanical device package. The lubricant container contains selected lubricant that evaporates from the container and contact to a surface of the microelectromechanical device for lubricating the surface.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: December 27, 2005
    Assignee: Reflectivity, Inc
    Inventors: Jim Dunphy, Dmitri Simonian, John Porter
  • Publication number: 20050268465
    Abstract: A method of fabricating a support structure. In one embodiment, the method is comprised of forming a layer of material into the support structure. The layer of material is adapted to be attached onto a substrate surface. The method further comprises treating the layer of material. The present method is further comprised of etching said layer of material. The fabricated support structure is then implementable during assembly of a display device. In one embodiment, the support structure is attached to the substrate surface prior to the forming, treating, and etching of the layer of material. In another embodiment, the support structure is attached to the substrate surface subsequent to the forming, treating, and etching of the layer of material.
    Type: Application
    Filed: December 27, 2004
    Publication date: December 8, 2005
    Inventors: George Hopple, Roger Barton, John Porter, Theodore Fahlen, Bob MacKey
  • Publication number: 20050214970
    Abstract: The present invention provides a lubricant container inside a microelectromechanical device package. The lubricant container contains selected lubricant that evaporates from the container and contact to a surface of the microelectromechanical device for lubricating the surface.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 29, 2005
    Inventors: Jim Dunphy, Dmitri Simonian, John Porter
  • Publication number: 20050215598
    Abstract: Phenylalanine derivatives of formula (1) are described: wherein R is a carboxylic acid or a derivative thereof; L1 is a linker atom or group; Ar is an optionally substituted aromatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of alpha4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.
    Type: Application
    Filed: May 17, 2005
    Publication date: September 29, 2005
    Applicant: Celltech R&D Ltd.
    Inventors: Sarah Archibald, John Head, Graham Warrellow, John Porter
  • Publication number: 20050175037
    Abstract: A packet switched communications system for transmitting synchronous data from a source module (4) to a terminating module (8) over a network comprises plurality of modules (4, 5, 7, 8) interconnected via transmission links (2, 6, 9). Each module operates with a clock of nominal frequency but which is not synchronised with the clocks of the other module(s) and has a single input and one or more outputs where all the outputs are phase locked to each other but are not synchronised with respect to the input. The system includes means (405, 504) for determining the accumulated phase difference between the input clock and the output clock of each module, and means (5, 7) for transmitting the accumulated phase difference to the terminating module (8) in the network. The received accumulated phase difference at the terminating module (8) is used to lock the output clock at the terminating module to the input clock at the source module.
    Type: Application
    Filed: April 3, 2003
    Publication date: August 11, 2005
    Inventors: John Porter, Benedict Freeman
  • Publication number: 20050153818
    Abstract: A production system for manufacturing a workpiece comprises an index system including a plurality of index devices removably mounted on the workpiece at known longitudinally spaced locations therealong, and a longitudinally extending index member releasably engaged with at least two of the index devices such that a position and orientation of the index member are fixed relative to the workpiece by the index devices, the index member having position-indicating features distributed therealong. The production system further comprises a machine module mounted for longitudinal movement along the index member and operable to perform an operation, the machine module being operable to detect the position-indicating features on the index member and thereby determine a position of the machine module relative to the workpiece.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 14, 2005
    Inventors: Laurance Hazlehurst, Bobby Philpott, James Buttrick, Darrell Jones, Kostadinos Papanikolaou, David Banks, Terrence Rowe, Ronald Outous, Charles Glaisyer, Harry Townsend, Mark Boberg, Paul Nelson, John Porter
  • Publication number: 20050126957
    Abstract: An apparatus and process for the separation, recovery and recycling of municipal solid waste (MSW) in which hot water 48 is added to shredded and homogenized MSW 2 as it enters a rotating feed preparation drum 34 equipped with internal lifter blades 36. The blades 36 and rotation of the drum 34 cause mixing and pulping of the MSW before discharge into a rotating thermal processor 56 also equipped with lifter blades 58 and cone section 64, and in which the moist MSW 2 is heated by heating the hot gases in the processor by a flame from burner 62 which converts the moisture in the MSW to steam. The steam permeates through the MSW as it is turned and lifted in the thermal processor 56, causing further pulping. The now cooked and treated MSW 2 is then fed to a conveyor 68 for transportation to a trommel screen for the separation of recyclable components.
    Type: Application
    Filed: May 2, 2003
    Publication date: June 16, 2005
    Inventors: John Porter, Tony Lees, Paul Fitton
  • Publication number: 20050124240
    Abstract: The present invention relates to a composite sheet material that is moisture vapor permeable and substantially liquid impermeable, the composite sheet material including as layers a lightweight, non-wet laid polyester nonwoven, a polyurethane breathable film, a polymer-coated, high tenacity polyester mesh, and a lightweight, non-wet laid, polyester nonwoven material. The material is also abrasion, tear, mildew and fire resistant.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 9, 2005
    Inventor: John Porter
  • Publication number: 20050106774
    Abstract: A method for altering surfaces of a microstructure is disclosed. The modification comprises cleaning the surfaces using an ozone-containing cleaning agent. The modification may also comprise coating the surfaces of the microstructure using a vapor phase coating agent that reacts chemically with the surface. The modification may also comprise coating the surfaces of the microstructure using a lubricant that interacts physically with the surface. The modification can be performed after removal of sacrificial materials of the microstructure during the fabrication process. In particular, the modification method is applicable during the packaging stage for the microstructure.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 19, 2005
    Inventors: Dmitri Simonian, John Porter
  • Publication number: 20050038084
    Abstract: Phenylalanine enamide derivatives of formula (1) are described: wherein R1 is a group Ar1L2Ar2Alk- in which: Ar1 is an optionally substituted aromatic or heteroaromatic group; L2 is a covalent bond or a linker atom or group; Ar2 is an optionally substituted arylene or heteroarylene group; and Alk is a chain in which R is a carboxylic acid (—CO2H) or a derivative or biostere thereof; X is an —O— or —S— atom or —N(R2)— group in which: Rx, Ry and Rz which may be the same or different is each a hydrogen atom or an optional substituent; or Rz is an atom or group as previously defined and Rx and Ry are joined together to form an optionally substituted spiro linked cycloaliphatic or heterocycloaliphatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of integrins to their ligands and are of use in the prophylaxis and treatment of immuno or inflammatory disorders or disorders involving the inappropriate growth or migration of cells.
    Type: Application
    Filed: September 22, 2004
    Publication date: February 17, 2005
    Inventors: Stephen Brand, Stuart Bailey, Julien Brown, James Johnson, John Porter, John Head
  • Publication number: 20050029598
    Abstract: According to embodiments of the present invention, circuits have elements to protect a high-voltage transistor in a gate dielectric antifuse circuit. An antifuse has a layer of gate dielectric between a first terminal coupled to receive an elevated voltage and a second terminal, and a high-voltage transistor is coupled to the antifuse and has a gate terminal. An intermediate voltage between the supply voltage and the elevated voltage is coupled to the gate terminal of the high-voltage transistor to protect the high-voltage transistor.
    Type: Application
    Filed: August 31, 2004
    Publication date: February 10, 2005
    Inventors: Kenneth Marr, John Porter
  • Publication number: 20050009428
    Abstract: Fabric and reinforcements are provided by this invention which, in a first embodiment, include a plurality of warp yarns having a first twist (turns/inch) and a plurality of weft yarns having a second twist which is greater than the first twist. A coating is applied over a substantial portion of the warp and weft yarns after they are assembled or laid together, so as to produce a weight distribution ratio of less than about 2.0:1, based upon the weight of the resinous coating of the weft yarns over the weight of the resinous coating on the warp yarns. This can be achieved, in substantial part, due to the difference in the twist ratios of the warp and weft yarns, which difference permits a more uniform coating to be applied. Further embodiments of this invention include a cementitious board and methods of making a coated fabric and cementitious board.
    Type: Application
    Filed: July 9, 2003
    Publication date: January 13, 2005
    Inventors: John Porter, Geraint Roberts
  • Publication number: 20040261387
    Abstract: A lawnmower comprising a chassis and a mower deck movable with respect to the chassis. A cylinder assembly is mounted to said chassis, and includes an actuating cylinder, and a piston shaft selectively extendable and retractable with respect to the cylinder under the influence of fluid pressure within the cylinder. A deck lift assembly is interconnected to the chassis and the mower deck for adjusting the height of the mower deck with respect to the chassis. The deck lift assembly includes a pivot member pivotally connected to the chassis. A jack is removably coupled to the pivot member, such that the chassis is raised and lowered in response to movement of the piston shaft with respect to the cylinder. The jack utilizes the existing hydraulic system and cylinder assembly of the lawnmower to raise the lawnmower with respect to the ground.
    Type: Application
    Filed: July 27, 2004
    Publication date: December 30, 2004
    Applicant: Ariens Company
    Inventors: Kari Ann Kalista, Daniel J. Gindt, Brian K. Gloudemans, John Porter, Robert Busse, Paul A. Schroeder