Patents by Inventor Gary Stevens

Gary Stevens 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: 11177049
    Abstract: The disclosure describes a method of purifying a self-healing fluid (SHF) comprising a drying oil and dielectric fluid. The method comprises (a) filtering the SHF through an absorbent material; and (b) subsequently filtering the SHF through a micropore filter system.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: November 16, 2021
    Assignee: Kinectrics UK Limited
    Inventors: Rhys Rhodes, Gary Stevens, Ian German, Susmit Basu
  • Publication number: 20200135359
    Abstract: The disclosure describes a method of purifying a self-healing fluid (SHF) comprising a drying oil and dielectric fluid. The method comprises (a) filtering the SHF through an absorbent material; and (b) subsequently filtering the SHF through a micropore filter system.
    Type: Application
    Filed: July 12, 2018
    Publication date: April 30, 2020
    Inventors: Rhys Rhodes, Gary Stevens, Ian German, Susmit Basu
  • Publication number: 20190315906
    Abstract: The present invention refers to a polymer blend comprising (i) between 10 wt % and 99.9 wt %, with respect to the total weight of the blend, of a thermoplastic host polymer, provided it is not a polyborosiloxane; and (ii) between 0.1 wt % and 90 wt %, with respect to the total weight of the blend, of a disulfide-containing self-healing polymer comprising a first polymeric chain fragment comprising one or more disulfide moieties and at least one moiety selected from the group consisting of —N(R1)—C(?O)—N(R2)—, —N(R1)—C(?O)—O— and —N(R1)—C(?O)—S—, wherein each R1 and R2 is independently selected from the group consisting of hydrogen, C1-C24-alkyl and C6-C15-aryl. The invention also refers to use of said blends, for example as cable sheaths.
    Type: Application
    Filed: December 12, 2017
    Publication date: October 17, 2019
    Inventors: Luis Miguel MÉNDEZ LLATAS, María Joaquina CABALLERO PÉREZ, María Victoria ALONSO ZORZO, Gary STEVENS, Ian GERMAN, Susmit BASU, Rhys RODES
  • Patent number: 9404005
    Abstract: The disclosure provides a process for producing a material with improved breakdown strength. The process includes heating a polymeric composition composed of a low density polyethylene (LDPE) and a minority amount of a high density polyethylene (HDPE). The polymeric composition is heated to at least the melting temperature of the HDPE. The process includes control-cooling the heated polymeric composition at a cooling rate from 0.1° C./min to 20° C./min, and forming a polymeric composition. The control-cooled polymeric composition has a unique morphology which improves breakdown strength. Also provided is a coated conductor with an insulating layer composed of the polymeric composition with the unique morphology. The insulating layer exhibits improved breakdown strength.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 2, 2016
    Assignees: Dow Global Technologies LLC, Dow Chemical Company Limited, University of Southampton, GnoSys Global Ltd.
    Inventors: Simon Sutton, Theo E. Geussens, Alun Vaughan, Gary Stevens
  • Patent number: 9334374
    Abstract: Polymer blends of polypropylene homopolymer and propylene-?-olefin interpolymer. Processes for producing polymeric compositions comprising control-cooling heated blends of polypropylene and propylene-?-olefin interpolymer. Such polymeric compositions can be employed in forming coated wires and cables.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 10, 2016
    Assignees: Dow Global Technologies LLC, Dow Chemical Company Limited, University of Southhampton, GnoSys Global Ltd.
    Inventors: Simon Sutton, Theo E. Geussens, Alun Vaughan, Gary Stevens
  • Patent number: 8685534
    Abstract: In one embodiment the present invention provides for a high thermal conductivity resin that comprises a host resin matrix 32 a high thermal conductivity filler 30. The high thermal conductivity filler forms a continuous organic-inorganic composite with the host resin matrix, and the fillers have an aspect ratio of between 3-100. The fillers are substantially evenly distributed through the host resin matrix, and are aligned in essentially the same direction. In some embodiments the resins are highly structured resin types.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: April 1, 2014
    Assignee: Siemens Energy, Inc.
    Inventors: James David Blackhall Smith, Gary Stevens, John William Wood
  • Publication number: 20130175068
    Abstract: The disclosure provides a process for producing a material with improved break-down strength. The process includes heating a polymeric composition composed of a low density polyethylene (LDPE) and a minority amount of a high density polyethylene (HDPE). The polymeric composition is heated to at least the melting temperature of the HDPE. The process includes control-cooling the heated polymeric composition at a cooling rate from 0.1° C./min to 20° C./min, and forming a polymeric composition. The control-cooled polymeric composition has a unique morphology which improves breakdown strength. Also provided is a coated conductor with an insulating layer composed of the polymeric composition with the unique morphology. The insulating layer exhibits improved breakdown strength.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 11, 2013
    Applicants: DOW CHEMICAL COMPANY LTD, GNOSYS UK LTD, GNOSYS GLOBAL LTD, UNIVERSITY OF SOUTHAMPTON
    Inventors: Simon Sutton, Theo E. Geussens, Alun Vaughan, Gary Stevens
  • Patent number: 8383007
    Abstract: The present invention provides for a resin mixture that comprises a highly structured resin 40 and a less structured resin 50. The highly structured resin 40 and the less structured resin 50 are mixed to a ratio of between 1:9 and 4:1 by volume, with a more particular ratio of 1:5 to 3:1. The highly structured resin forms ordered micro regions and the ordered micro regions impose order on surrounding less structured resin molecules. The micro regions are essentially groups of the HS resin that will naturally form order structures.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: February 26, 2013
    Assignee: Siemens Energy, Inc.
    Inventors: James D. B. Smith, Gary Stevens, John W. Wood
  • Patent number: 8313832
    Abstract: The present invention provides for a high thermal conductivity (HTC) paper that comprises a host matrix, such as mica, and HTC materials intercalated into the host matrix. The HTC materials are comprised of at least one of nanofillers, diamond like coatings directly on the host matrix, and diamond like coatings on the nanofillers.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: November 20, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: James D Smith, Gary Stevens, John W Wood
  • Patent number: 8277613
    Abstract: The present invention provides for high thermal conductivity paper that comprises a host matrix (10), and high thermal conductivity materials (12) added to a surface of the host matrix in a specific pattern (12). The high thermal conductivity materials are comprised of one or more of nanofillers, diamond like coatings directly on the host matrix, and diamond like coatings on the nanofillers. In particular embodiments the specific pattern comprises one or more of a grid, edging, banding centering and combinations thereof and the high thermal conductivity materials cover 15-55% of the surface of the host matrix. Multiple surfaces, including sub layers my have patterning.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: October 2, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: James D. B. Smith, Gary Stevens, John W. Wood
  • Patent number: 8216672
    Abstract: In one embodiment the present invention provides for a high thermal conductivity highly structured resin that comprises a host highly structured resin matrix, and a high thermal conductivity filler 30. The high thermal conductivity fillers are from 1-1000 nm in length, and high thermal conductivity fillers have an aspect ratio of between 3-100. Particular highly structured highly structured resins include at least one of liquid crystal 40 polymers, interpenetrating networks, dendrimer type matrices, expanding polymers, ladder polymers, star polymers and structured organic-inorganic hybrids 60.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: July 10, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: James David Blackhall Smith, Gary Stevens, John William Wood
  • Publication number: 20120118612
    Abstract: In one embodiment the present invention provides for a high thermal conductivity resin that comprises a host resin matrix 32 a high thermal conductivity filler 30. The high thermal conductivity filler forms a continuous organic-inorganic composite with the host resin matrix, and the fillers have an aspect ratio of between 3-100. The fillers are substantially evenly distributed through the host resin matrix, and are aligned in essentially the same direction. In some embodiments the resins are highly structured resin types.
    Type: Application
    Filed: January 13, 2012
    Publication date: May 17, 2012
    Inventors: JAMES DAVID BLACKHALL SMITH, Gary Stevens, John William Wood
  • Patent number: 7967938
    Abstract: The present invention facilitates the thermal conductivity of fabrics by surface coating of the fabrics with high thermal conductivity materials 6. The fabrics may be surface coated when they are individual fibers or strands 4, bundles of strands, formed fabric or combinations therefore. A particular type of fibrous matrix used with the present invention is glass. Some fabrics may be a combination of more than one type of material, or may have different materials in alternating layers. HTC coatings of the present invention include diamond like coatings (DLC) and metal oxides, nitrides, carbides and mixed stoichiometric and non-stoichiometric combinations that can be applied to the host matrix.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: June 28, 2011
    Assignee: Siemens Energy, Inc.
    Inventors: James D Smith, Gary Stevens, John W Wood
  • Patent number: 7955661
    Abstract: A method for the treatment of micro pores within a mica paper that includes: obtaining a silane with a molecular weight of between approximately 15 and 300, adding the silane to the mica paper, and reacting the silane with the inner surface of the micro pores within the mica paper. After this, a resin is impregnated into the mica paper, and the resin binds to the inner surfaces of the micro pores with the mica paper through the silane. In one embodiment, the mica paper is compressed by an amount between 5% and 30% of its original thickness. In another embodiment, the mica paper is compressed both prior to reacting the silane and during impregnation with the resin.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: June 7, 2011
    Assignee: Siemens Energy, Inc.
    Inventors: Gary Stevens, James D. B. Smith, John W. Wood
  • Patent number: 7851059
    Abstract: A high thermal conductivity resin that is made up of a host resin matrix (42) and high thermal conductivity fillers (30) that are mixed within the host resin to form a resin mixture. The fillers comprise at least 3-5% by weight of the resin mixture, and the fillers are from an average of 1-100 nm in at least one dimension, and where the particles are smaller than an average of 1000 nm in the particles' longest dimension. The host resin matrix forms an ordered resin shell (40) around the high thermal conductivity fillers (30), whereby resin molecules are aligned perpendicular to the surface of the high thermal conductivity fillers. An overlap of the ordered resin shells (44) is formed between the high thermal conductivity fillers such that continuous pathways for ordered resin shells are created through the resin mixture.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: December 14, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: Gary Stevens, James D. B. Smith, John W. Wood
  • Publication number: 20100311936
    Abstract: In one embodiment the present invention provides for high thermal conductivity materials 30 that have surface functional groups grafted thereto. These grafted surface functional groups then form a continuous bond with a host resin matrix 32 that the high thermal conductivity materials 30 are added to.
    Type: Application
    Filed: August 20, 2010
    Publication date: December 9, 2010
    Inventors: James David Blackhall Smith, Gary Stevens, John William Wood
  • Patent number: 7846853
    Abstract: An electrical insulation paper that is made of mica flakelets (22), having an average size range of 0.01 to 0.05 mm in their thinnest dimension, hexagonal boron nitride (26), which has an average size range of 10 to 1,000 nm in their longest dimension, and a resin matrix. The mica flakelets and the hexagonal boron nitride are mixed and formed into a paper (17), and the resin is added to the paper after formation, the ratio by weight of the hexagonal boron nitride to the mica flakelets is directly proportional to the average size of the hexagonal boron nitride compared to the average size of the mica flakelets, within an adjustment factor.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: December 7, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: Gary Stevens, James D. B. Smith, John W. Wood, Peter Groeppel
  • Patent number: 7837817
    Abstract: The present invention facilitates the thermal conductivity of fabrics by surface coating of the fabrics with high thermal conductivity materials 6. The fabrics may be surface coated when they are individual fibers or strands 4, bundles of strands, formed fabric or combinations therefore. A particular type of fibrous matrix used with the present invention is glass. Some fabrics may be a combination of more than one type of material, or may have different materials in alternating layers. HTC coatings of the present invention include diamond like coatings (DLC) and metal oxides, nitrides, carbides and mixed stoichiometric and non-stoichiometric combinations that can be applied to the host matrix.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: November 23, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: James D Smith, Gary Stevens, John W Wood
  • Publication number: 20100276628
    Abstract: The present invention provides for a high thermal conductivity (HTC) paper that comprises a host matrix, such as mica, and HTC materials intercalated into the host matrix. The HTC materials are comprised of at least one of nanofillers, diamond like coatings directly on the host matrix, and diamond like coatings on the nanofillers.
    Type: Application
    Filed: July 16, 2010
    Publication date: November 4, 2010
    Inventors: James D. Smith, Gary Stevens, John W. Wood
  • Publication number: 20100239851
    Abstract: A high thermal conductivity resin that is made up of a host resin matrix (42) and high thermal conductivity fillers (30) that are mixed within the host resin to form a resin mixture. The fillers comprise at least 3-5% by weight of the resin mixture, and the fillers are from an average of 1-100 nm in at least one dimension, and where the particles are smaller than an average of 1000 nm in the particles' longest dimension. The host resin matrix forms an ordered resin shell (40) around the high thermal conductivity fillers (30), whereby resin molecules are aligned perpendicular to the surface of the high thermal conductivity fillers. An overlap of the ordered resin shells (44) is formed between the high thermal conductivity fillers such that continuous pathways for ordered resin shells are created through the resin mixture.
    Type: Application
    Filed: September 28, 2006
    Publication date: September 23, 2010
    Inventors: Gary Stevens, James D.B. Smith, John W. Wood