Patents by Inventor Mark A. Stewart

Mark A. Stewart 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: 20070004854
    Abstract: Disclosed are copolymers derived from ethylene and an alkyl acrylate comonomer wherein the copolymer has a number average molecular weight (Mn) above 40,000. This invention also provides compounded compositions and cured compositions (i.e., vulcanizates) comprising these copolymers. The copolymers provide improved dynamic fatigue resistance of the vulcanizates. Also disclosed are articles comprising the copolymers, such as tubing, hoses, dampers, seals and gaskets.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Inventors: Yun-Tai Wu, Mark Stewart, Yi Ye
  • Publication number: 20070001400
    Abstract: A target (1) for use with a projectile has a web (7) defining a target face and a back board (29). The target face is divided into multiple segments (3, 5). A cup (19) filled with a projectile-receptive insert material (27) is mounted for sliding within each segment. Each cup has one or more resilient cushions (35) between the cup and the back board. Each cushion has at least one electroconductive area. The back board has pairs of switch contacts (25), forming electrical switches. The projectile impacting a cup at the target face with sufficient force causes the cup to slide within the segment urging the electroconductive area of the one or more cushions to touch the switch contacts, resulting in closing of the switch defined by the switch contacts and signaling a hit to onboard electronic circuitry. The at least one cushions beneath that cup return the cup substantially to its original position.
    Type: Application
    Filed: January 23, 2004
    Publication date: January 4, 2007
    Inventor: Mark Stewart
  • Publication number: 20070004853
    Abstract: Disclosed are copolymers derived from ethylene and at least two different alkyl acrylate comonomers, with or without an acid cure site-containing comonomer. The copolymers can be derived from (a) from 10 to 50 weight % of ethylene; (b) 20 to 30 weight % of a first alkyl acrylate having from 1 to 4 carbons in the alkyl group; from 35 to 45 weight % of a second different alkyl acrylate having from 1 to 4 carbons in the alkyl group; and (d) from 0 to 5 weight % of a 1,4-butene-dioic acid moiety, or anhydride or monoalkyl ester thereof; the remainder being ethylene: wherein the copolymer has a number average molecular weight (Mn) above 40,000. Also disclosed are compounded compositions comprising these copolymers and cured compositions (i.e., vulcanizates) as well as rubber articles formed from these compounded compositions, such as constant velocity joint boots and shaft boots, hoses, dampers, seals and gaskets.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Inventors: Yun-Tai Wu, Mark Stewart, Yi Ye
  • Publication number: 20060247388
    Abstract: Disclosed are oxygen-scavenging polymer compositions having high transparency and low haze comprising immiscible blends of at least one polyester comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol, a copolyamide or a transamidized, homogeneous blend of a least two polyamides, and a metal catalyst. The components of the immiscible blend which have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into the polymer composition to produce transparent shaped articles. The blends of the present invention are useful in producing shaped articles such as, for example, sheeting, films, tubes, bottles, preforms and profiles. These articles may have one or more layers and can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties.
    Type: Application
    Filed: March 28, 2006
    Publication date: November 2, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton, Emmett Crawford, David Porter, Gary Connell
  • Publication number: 20060235167
    Abstract: Disclosed is a process for the preparation of shaped articles such as, for example, sheeting, films, tubes, bottles, preforms and profiles, having high transparency and low haze, and comprising immiscible blends of at least one polyester comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The components of the immiscible blend have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into the polymer composition to produce transparent shaped articles. These articles may have one or more layers and can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into the compositions to produce shaped articles having oxygen-scavenging properties.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 19, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton, Emmett Crawford, David Porter, Gary Connell
  • Publication number: 20060234073
    Abstract: Disclosed are transparent, multilayered articles having high transparency and low haze and a process for their preparation. The multilayer articles comprise at least one layer which contains at least one polyester comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol and a separate layer which contains copolyamide or homogeneous blend of polyamides. The polyester component and the polyamide component have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 19, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton, Emmett Crawford, David Porter, Gary Connell
  • Publication number: 20060229594
    Abstract: A device and method for ablating tissue is disclosed comprising the steps of acquiring an anatomical image of a patient, correlating the image to the patient, guiding an ablating member within the patient while tracking the position of the ablating member in the patient, positioning the ablating member in a desired position to ablate tissue, emitting ablating energy from the ablating member to form an ablated tissue area and removing the ablating member from the patient.
    Type: Application
    Filed: December 9, 2005
    Publication date: October 12, 2006
    Inventors: David Francischelli, James Hissong, James Keogh, James Skarda, Mark Stewart
  • Publication number: 20060226565
    Abstract: Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze and in which at least one layer contains at least one polyester comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol and a separate layer which contains a transamidized, homogeneous blend of a least two polyamides. The polyester component and the polyamide component have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 12, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton, Emmett Crawford, David Porter, Gary Connell
  • Patent number: 7117983
    Abstract: A shroud support apparatus for a ceramic component of a gas turbine having: an outer shroud block having a coupling to a casing of the gas turbine; a spring mass damper attached to the outer shroud block and including a spring biased piston extending through said outer shroud block, wherein the spring mass damper applies a load to the ceramic component; and the ceramic component has a forward flange and an aft flange each attachable to the outer shroud block.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: October 10, 2006
    Assignee: General Electric Company
    Inventors: Randall Richard Good, Kevin Leon Bruce, Gregory Scot Corman, David Joseph Mitchell, Mark Stewart Schroder, Christopher Grace
  • Patent number: 7117189
    Abstract: A system is disclosed that provides a goal based learning system utilizing a rule based expert training system to provide a cognitive educational experience. The system provides the user with a simulated environment that presents a business opportunity to understand and solve optimally. Mistakes are noted and remedial educational material presented dynamically to build the necessary skills that a user requires for success in the business endeavor. The system utilizes an artificial intelligence engine driving individualized and dynamic feedback with synchronized video and graphics used to simulate real-world environment and interactions. Multiple “correct” answers are integrated into the learning system to allow individualized learning experiences in which navigation through the system is at a pace controlled by the learner. A website is linked to the presentation to provide context-sensitive information to assist the learner.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: October 3, 2006
    Assignee: Accenture, LLP
    Inventors: Mark Stewart Nichols, James Andrew Gilchrist, Alexander Han Leung Poon
  • Publication number: 20060199871
    Abstract: Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze and comprising one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The thermoplastic polymer components and the polyamide components have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.
    Type: Application
    Filed: February 27, 2006
    Publication date: September 7, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton
  • Publication number: 20060197246
    Abstract: Disclosed is a process for the preparation of shaped articles such as, for example, sheeting, films, tubes, bottles, preforms and profiles, having high transparency and low haze comprising immiscible blends of one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The components of the immiscible blend which have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into the polymer composition to produce transparent shaped articles. These articles may have one or more layers and can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into the compositions to produce shaped articles having oxygen-scavenging properties.
    Type: Application
    Filed: February 27, 2006
    Publication date: September 7, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton
  • Publication number: 20060199904
    Abstract: Disclosed are oxygen-scavenging polymer compositions having high transparency and low haze comprising immiscible blends of one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, a copolyamide or a transamidized, homogeneous blend of a least two polyamides, and a metal catalyst. The components of the immiscible blend which have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into the polymer composition to produce transparent shaped articles. The blends of the present invention are useful in producing shaped articles such as, for example, sheeting, films, tubes, bottles, preforms and profiles. These articles may have one or more layers and can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties.
    Type: Application
    Filed: February 27, 2006
    Publication date: September 7, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton
  • Publication number: 20060199921
    Abstract: Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze having at least one layer contains one or more thermoplastic polymers selected from polyesters, polycarbonates, and homogeneous blends thereof, and a separate layer which contains a transamidized, homogeneous blend of a least two polyamides. The thermoplastic polymer components and the polyamide components have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.
    Type: Application
    Filed: February 27, 2006
    Publication date: September 7, 2006
    Inventors: Wesley Hale, Thomas Pecorini, Mark Stewart, Martin Rogers, Spencer Gilliam, Michael Cliffton
  • Publication number: 20060184221
    Abstract: A trans-septal guide catheter for providing access through the septum separating a first heart chamber from a second heart chamber that includes an elongated guide catheter body extending between guide catheter proximal and distal ends. A distal segment of the guide catheter is adapted to be inserted through the septum to locate the distal segment of the guide catheter within one of the first heart chamber and the second heart chamber. The catheter body encloses a guide catheter lumen adapted to provide access into the one of the first heart chamber and the second heart chamber through a guide catheter lumen proximal end opening and a guide catheter lumen distal end opening.
    Type: Application
    Filed: April 7, 2006
    Publication date: August 17, 2006
    Inventors: Mark Stewart, David Francischelli, James Skarda
  • Publication number: 20060148957
    Abstract: The present invention concerns a method for forming an article by combining a polyester polymer and an oxygen scavenging composition comprising a polyamide in the presence of zinc and a cobalt in a melt processing zone to form a melt; and forming an article such as a sheet or preform from the melt. Also provided are molten formulated polyester polymer compositions containing a blend of a polyethylene terephthalate polymer and a polyamide polymer along with zinc and cobalt. Articles made from the composition are resistant to the transmission of oxygen, possess short induction periods, and have high capacity for sustaining lengthy periods of low oxygen transmission through the wall of the article.
    Type: Application
    Filed: December 5, 2005
    Publication date: July 6, 2006
    Applicants: Constar International Inc., Eastman Chemical Company
    Inventors: Mark Stewart, Robert Estep, Benjamin Gamble, Michael Cliffton, Donna Quillen, Lavonna Buehrig, Venkat Govindarajan, Matthew Dauzvardis
  • Publication number: 20060142753
    Abstract: A system and method for creating lesions and assessing their completeness or transmurality. Assessment of transmurality of a lesion is accomplished by monitoring the depolarization signal in a local electrogram taken using electrodes located adjacent the tissue to be ablated. Following onset of application of ablation energy to heart tissue, the local electrogram is measured with electrodes located adjacent tissue to be ablated so that the ablation energy to ablation elements can be selectively reduced or terminated when transmurality is detected.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 29, 2006
    Inventors: David Francischelli, Eduardo Warman, Rahul Mehra, Mark Stewart, James Skarda, Harry Puryear, David Schwartzman
  • Patent number: 7065512
    Abstract: A system is disclosed that provides a goal based learning system utilizing a rule based expert training system to provide a cognitive educational experience. The system provides the user with a simulated environment that presents a training opportunity to understand and solve optimally. Mistakes are noted and remedial educational material presented dynamically to build the necessary skills that a user requires for success in the business endeavor. The system uses an artificial intelligence engine driving individualized and dynamic feedback with synchronized video and graphics used to simulate real-world environment and interactions. Multiple “correct” answers are integrated into the learning system to allow individualized learning experiences in which navigation through the system is at a pace controlled by the learner.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: June 20, 2006
    Assignee: Accenture, LLP
    Inventors: Benoit Patrick Bertrand, Mark Stewart Nichols
  • Publication number: 20060128861
    Abstract: A solid concentrate is provided having a combination of a transition metal present in an amount ranging from 1000 to 40,000 ppm (weight by metal) and a polyester polymer present in an amount of at least 40 wt. % based on the weight of the concentrate. Concentrates made with highly modified polyester polymers are easy to compound with transition metals forming less brittle polymer upon melt extrusion. Bottle preforms and oxygen scavenging bottles can be made from these concentrates by combining solid polyester particles, solid polyamide particles, and solid these concentrate particles c into an melt processing zone, forming a melt, and forming an article directly from the melt. The b* color and the L* color and the haze levels of the preforms are improved over the preforms made with liquid carriers instead of solid concentrates.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 15, 2006
    Inventors: Mark Stewart, Emerson Sharpe, Benjamin Gamble, Steven Stafford, Robert Estep, James Williams, Thomas Clark
  • Publication number: 20060122306
    Abstract: This invention relates to a polyester/polyamide blend having an excellent gas barrier property. More particularly, the present invention relates to combinations of a polyethylene terephthalate polymer and a polyamide polymer having an excellent gas barrier property and short oxygen scavenging induction periods, where the polyamide polymer has a C:A terminal group concentration ratio of 2:1 or more and a C+A terminal group concentration of at least 0.17 meq/g of polyamide polymer, wherein C represents a cumulative total of a terminal carboxyl group concentration and a terminal hydrocarbyl group concentration expressed in meq/g of polyamide, and A represents a terminal amine group concentration expressed in meq/g of polyamide.
    Type: Application
    Filed: December 6, 2004
    Publication date: June 8, 2006
    Inventors: Steven Stafford, Mark Stewart, Benjamin Gamble