Patents by Inventor John A. Walton

John A. Walton 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: 7231932
    Abstract: An embodiment of the invention involves a method for servicing a choke valve that includes disconnecting a choke actuator and at least one internal valve component engaged therewith from the choke valve body of the choke valve and moving the same in a generally linear path away from the choke valve body along the axis of the choke valve body.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: June 19, 2007
    Assignee: Power Well Services, L.P.
    Inventors: Robert F. Schmidt, David A. Schmidt, John Walton McCaskill
  • Publication number: 20070066168
    Abstract: A mattress, foundation, or other upholstered sleep product or article includes a core and barrier material surrounding the core. The barrier material includes flame and heat-resistant material that is configured to prevent combustion of the core when the upholstered article is impinged with a gas flame according to California Technical Bulletin 603 of the State of California Department of Consumer Affairs. The barrier material may include an intumescent material that is configured to swell and char in the presence of a flame so as to form a barrier to the flame and to heat generated by the flame.
    Type: Application
    Filed: October 12, 2006
    Publication date: March 22, 2007
    Inventors: James Small, John Walton, Samuel Gillette, Ladson Fraser, Zareh Mikaelian
  • Publication number: 20070036314
    Abstract: A system and method are provided for detecting extension attacks made to a communication enterprise, and taking appropriate remedial action to prevent ongoing attacks and future attacks. One or more attributes of a suspect call are analyzed, and a risk is associated with each analyzed attribute. An overall risk or assessment is then made of the analyzed attributes, attack attributes are logged, and one or more remedial actions may be triggered as a result of the analyzed call attributes. The remedial actions may include recording the call, notifying an administrator of a suspect call, or isolating the communication enterprise from the attack by terminating the call or shutting down selected communication endpoints to prevent calls being made to those extensions. Rules may be applied to the analyzed attributes in order to trigger the appropriate remedial action.
    Type: Application
    Filed: October 4, 2005
    Publication date: February 15, 2007
    Inventors: Michael Kloberdans, John Walton
  • Publication number: 20060173209
    Abstract: Peracetic acid is prepared on-site and on-demand in a continuous process and at a controlled rate to meet the demand of a downstream operation. In one aspect, a continuous tank reactor is used to produce quantities of peracetic acid at a controlled rate in liquid or vapor form. In another aspect, the use of super acid catalysts enhances the production of peracetic acid under milder conditions, for example, than those typically encountered when using sulfuric acid catalysts alone.
    Type: Application
    Filed: March 14, 2006
    Publication date: August 3, 2006
    Applicant: PERAGEN SYSTEMS INC.
    Inventors: Mark Vineyard, Robert Moison, Frederic Budde, John Walton
  • Publication number: 20060100934
    Abstract: A computer implemented method and system for automating the process of creating and placing customized manufacturing orders for complex electronic equipment and housing assemblies. In one non-limiting example implementation, a computerized customer ordering interface is provided for aiding a requisition engineer in designing and requisitioning the manufacture of customized cabinet/rack-mounted housing and wiring arrangements for complex industrial electronic equipment.
    Type: Application
    Filed: November 10, 2004
    Publication date: May 11, 2006
    Inventors: Janice Burr, Mike Elliott, Hannah Gloria, George Matzko, Chandrashekar Rachakonda, John Walton
  • Publication number: 20060025627
    Abstract: Peracetic acid in aqueous liquid solution or vapor phase is prepared on-site and on-demand in a continuous process. Peracetic acid can be produced at a controlled rate to meet the demands of a downstream operation. In one embodiment, a pipe-line reactor and distillation column is used for the production of peracetic acid. In another embodiment, an apparatus includes a continuous pot reactor and distillation column for producing peracetic acid. The present invention has the potential of providing a much safer source of aqueous peracetic acid than currently available processes, due in part to the limited inventories of reactants in the reactor, particularly those in the vapor phase.
    Type: Application
    Filed: July 28, 2004
    Publication date: February 2, 2006
    Applicant: Peragen Systems, Inc.
    Inventors: Mark Vineyard, Robert Moison, Frederic Budde, John Walton
  • Publication number: 20050232693
    Abstract: A road safety barrier having four or more ropes 4-7 supported by posts 1-3 rigidly mounted on or in the ground is described. Each rope is held in tension against the posts and follows a sinuous path between the posts. The ropes are tensioned against the posts and this gives rise to a combined frictional resistance to displacement of the ropes relative to each post along the length of the safety barrier. The structure of at least some of the posts and/or their mounting with respect to the ground defines a minimum bending yield strength in a direction along the length of the barrier. This minimum bending yield strength is greater than the bending moment resulting from the combined frictional resistance forces acting on the post.
    Type: Application
    Filed: September 15, 2004
    Publication date: October 20, 2005
    Inventors: Graham Sharp, Sean Billingham, John Walton
  • Publication number: 20050144728
    Abstract: A filler cloth includes cellulosic fibers treated with a flame retardant chemistry such that the filler cloth has a char length of less than about nine inches when tested in accordance with NFPA 701, such that thermal shrinkage of the filler cloth at 400° F. is less than about 35% in any direction, and such that the filler cloth maintains flame and heat resistant integrity when impinged with a gas flame in accordance with testing protocols set forth in Technical Bulletin 603 of the State of California Department of Consumer Affairs. The filler cloth cellulosic fibers are treated with a flame retardant chemistry such that the filler cloth has a Frazier air permeability of less than about 400 cfm and a thermal resistance rating of at least about 3 when tested according to NFPA 2112.
    Type: Application
    Filed: January 26, 2005
    Publication date: July 7, 2005
    Inventors: Melanie Jones, James Small, John Walton, Alfred Baldwin, Zareh Mikaelian
  • Publication number: 20050095936
    Abstract: A composite upholstery panel includes a layer of ticking fabric, a layer of flame and heat-resistant backing fabric, and a layer of resilient flame and heat-resistant cushioning material sandwiched between the layer of ticking fabric and the layer of backing fabric. The composite upholstery panel maintains flame and heat resistant integrity when impinged at any location with a gas flame in accordance with testing protocol set forth in Technical Bulletin 603 of the State of California Department of Consumer Affairs (TB-603). However, individually, the ticking layer, backing layer and cushioning layer would fail to maintain flame and heat resistant integrity when impinged with a gas flame in accordance with testing protocol set forth in TB-603.
    Type: Application
    Filed: December 21, 2004
    Publication date: May 5, 2005
    Inventors: Walter Jones, James Small, John Walton, Alfred Baldwin, Zareh Mikaelian
  • Publication number: 20050071556
    Abstract: A system interface having a plurality of directors, one portion of such directors being adapted for coupling to a host computer/server and another portion of the directors being adapted for coupling to a bank of disk drives. The plurality of directors are interconnected through a network. A common resource section is provided having a resource shared among the plurality of directors. The common shared resource section includes a shared computer code used by the plurality of directors. The code includes computer code for booting up each one of the plurality directors. The common shared code storage section is interconnected to the directors through the network. A second, redundant common shared resource section is provided. The network is a packet switching network.
    Type: Application
    Filed: September 30, 2003
    Publication date: March 31, 2005
    Inventors: John Walton, William Baxter, Kendell Chilton, Daniel Castel, Michael Bermingham, James Guyer
  • Patent number: 6804794
    Abstract: In one embodiment of the present invention, a memory controller is provided that includes both a first processor and a second processor. If a memory device controlled by the controller indicates to the controller that an error condition exists in the device, either the first processor or the second processor is selected to handle the error condition. If the first processor is selected to handle the error condition, the first processor handles the error condition according to one or more statically preprogrammed error handling routines. Conversely, if the second processor is selected to handle the error condition, the second processor handles the error condition according to one or more dynamically programmable error handling routines.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: October 12, 2004
    Assignee: EMC Corporation
    Inventors: Gregory Robidoux, John Walton
  • Patent number: 6664088
    Abstract: A method of producing vanillin comprising the steps of: (1) providing trans-ferulic acid or a salt thereof; and (2) providing trans-ferulate: CoASH ligase activity (enzyme activity I), trans-feruloyl ScoA hydratase activity (enzyme activity II), and 4-hydroxy-3-methoxyphenyl-&bgr;-hydroxy-propionyl SCoA (HMPHP SCoA) cleavage activity (enzyme activity III). Conveniently the enzymes are provided by Pseudomonas fluorescens Fe3 or a mutant or derivative thereof. Polypeptides with enzymes activities II and III and polynucleotides encoding the polypeptides. Use of the polypeptides or the polynucleotides in a method for producing vanillin is also provided.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: December 16, 2003
    Assignee: Plant Bioscience Limited
    Inventors: Arjan Narbad, Michael John Charles Rhodes, Michael John Gasson, Nicholas John Walton
  • Patent number: 6647561
    Abstract: A spool for use with a swimming pool cover or with a shade cover. The spool has a roller assembly, and a cover (not shown) may be wound onto the roller assembly or unwound from the assembly. The roller assembly has a pre-tensioned rubber strip that when viewed in transverse cross-section is substantially rectangular in shape and two opposing sides of the rectangle are notched. This strip is tensioned when the cover is unwound from the spool and a locking mechanism retains the cover in a desired unwound position against the tension of the rubber strip.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: November 18, 2003
    Assignee: Neumann Steel PTY Ltd.
    Inventors: Robert Niven Walton, Lawrence John Walton, Duncan B Gilmore, Nicholas D Agnew
  • Patent number: 6645771
    Abstract: An optical sensor for detection of gases such as nitrogen oxides includes a thin film of an active material comprising a highly polarisable organic material deposited by the Langmuir-Blodgett technique or otherwise on a substrate and interrogated optically, to detect changes in at least one optical property such as reflectance or complex refractive index. Preferred materials include a specific polysiloxane and low-molecular-mass compounds (FIGS 1 to 5b), having specific electron donating and/or accepting groups, including azobenzenes. The optical change may include a visible colour change.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: November 11, 2003
    Assignee: Coventry University
    Inventors: Lewis Sidney Miller, David John Walton, Andrew Martin McRoberts, Andrew Laurence Newton, David Anthony Parry, Christopher G.D. Sykesud
  • Publication number: 20030167511
    Abstract: One aspect of the present invention relates to a transgenic plant which, by presence of a transgene, is able to produce p-hydroxybenzoic acid or a &bgr;-D-glycoside or &bgr;-D-glucose ester thereof. A method is also disclosed for producing p-hydroxybenzoic acid or a &bgr;-D-glycoside or &bgr;-D-glucose ester thereof using a transgenic plant of the present invention.
    Type: Application
    Filed: July 17, 2002
    Publication date: September 4, 2003
    Inventors: Arjan Narbad, Michael John Charles Rhodes, Michael John Gasson, Nicholas John Walton
  • Publication number: 20020189009
    Abstract: A spool (1) for use with a swimming pool cover or with a shade cover. The spool (1) has a roller assembly (4), and a cover (not shown) may be wound onto the roller assembly (4) or unwound from the assembly (4). The roller assembly (4) has a pre-tensioned rubber strip (22) that when viewed in transverse cross-section is substantially rectangular in shape and two opposing sides of the rectangle are notched. This strip (22) is tensioned when the cover is unwound from the spool (1) and a locking mechanism retains the cover in a desired unwound position against the tension of the rubber strip (22).
    Type: Application
    Filed: June 14, 2002
    Publication date: December 19, 2002
    Inventors: Robert Niven Walton, Lawrence John Walton, Duncan B Gilmore, Nicholas D Agnew
  • Patent number: 6323011
    Abstract: A method of producing vanillin comprising the steps of: (1) providing trans-ferulic acid or salt thereof; and (2) providing trans-ferulate; CoASH ligase activity (enzyme activity I) trans-feruloyl SCoA hydratase activity (enzyme activity II), and 4-hydroxy-3-methoxyphenyl-&bgr;-hydroxy-propionyl SCoA (HMPHP SCoA) cleavage activity (enzyme activity III). Conveniently the enzymes are provided by Pseudomonas fluorescens Fe3 or a mutant or derivative thereof. Polypeptides with enzymes activities II and III and polynucleotides encoding said polypeptides. Use of said polypeptides or said polynucleotides in a method for producing vanillin.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: November 27, 2001
    Assignee: Institute of Food Research
    Inventors: Arjan Narbad, Michael John Charles Rhodes, Michael John Gasson, Nicholas John Walton
  • Publication number: 20010014467
    Abstract: A method of producing vanillin comprising the steps of: (1) providing trans-ferulic acid or a salt thereof; and (2) providing trans-ferulate: CoASH ligase activity (enzyme activity I), trans-feruloyl ScoA hydratase activity (enzyme activity II), and 4-hydroxy-3-methoxyphenyl-&bgr;-hydroxy-propionyl SCoA (HMPHP SCoA) cleavage activity (enzyme activity III). Conveniently the enzymes are provided by Pseudomonas fluorescens Fe3 or a mutant or derivative thereof. Polypeptides with enzymes activities II and III and polynucleotides encoding said polypeptides. Use of said polypeptides or said polynucleotides in a method for producing vanillin.
    Type: Application
    Filed: December 7, 2000
    Publication date: August 16, 2001
    Inventors: Arjan Narbad, Michael John Charles Rhodes, Michael John Gasson, Nicholas John Walton
  • Patent number: 5905032
    Abstract: Pendant groups in the alpha-amino acid monomer residues comprising a polypeptide molecule are selectively modified by applying an electric potential across an electrochemical cell containing the polypeptide.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: May 18, 1999
    Assignee: Coventry University
    Inventors: David John Walton, John Heptinstall, Paul Graham Richards
  • Patent number: D481872
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: November 11, 2003
    Assignee: Polymer Group, Inc.
    Inventors: Gary Hennel, John Walton, Nick Carter