Patents Represented by Attorney David L Hedden
  • Patent number: 7723401
    Abstract: This invention relates to a process for making foundry shapes (e.g. cores and molds) using epoxy-acrylate cold-box binders containing an oxidizing agent and elevated levels of an organofunctional silane, which are cured in the presence of sulfur dioxide, and to a process for casting metals using the foundry shapes. The metal parts have fewer casting defects because the foundry shapes made with the binder are more resistant to erosion.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: May 25, 2010
    Assignee: Ashland Licensing and Intellectual Property, LLC
    Inventors: Xianping Wang, H. Randall Shriver, Jorg Kroker
  • Patent number: 7659327
    Abstract: The invention relates to microspheres coated with a phenolic novolak resin, a process for preparing them, and their use in making foundry shapes, e.g. molds, cores, sleeves, pouring cups, etc., which are used in casting metal parts.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: February 9, 2010
    Assignee: Ashland Licensing and Intellectual Property, LLC
    Inventor: Ronald C. Aufderheide
  • Patent number: 7581874
    Abstract: Heat transfer test assemblies for monitoring and recording fouling of aqueous systems are disclosed. The heat transfer test assemblies include an outer tube member, a heating rod positioned within the outer tube member, a ribbed tube sleeve fitted over the heating rod and thermocouples for sensing the wall temperature of heating rod. The disclosed heat transfer test assemblies enable improved monitoring of systems employing enhanced heat exchanger tubes. Monitoring and recording apparatuses including the heat transfer test assemblies are also disclosed.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: September 1, 2009
    Inventors: George F. Hays, Eric P. Hoernle
  • Patent number: 7407543
    Abstract: This invention relates to a binder composition comprising condensed tannin and furfuryl alcohol. The composition can be used to prepare foundry mixes. The foundry mixes are prepared by mixing the composition with an acid or salt of an acid. The foundry mixes are then shaped into molds or cores and cured by heating or by the no-bake process with stronger acid curing catalysts. The molds and cores are used in casting metal articles.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: August 5, 2008
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Mark R. Stancliffe, Jorg Kroker
  • Patent number: 7407994
    Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl ester of a fatty acid, wherein the alkyl group of the ester is an aliphatic hydrocarbon having from 4 to 8 carbon atoms, preferably butyl tallate; and (d) an effective amount of a free radical initiator. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: August 5, 2008
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Jorg Kroker, H. Randall Shriver
  • Patent number: 7270172
    Abstract: This invention relates to an improved process for casting a metal by pouring molten metal into and around a casting assembly, where a riser containing a sleeve is a component of the casting assembly. The process comprises (a) inserting a riser insert into the cavity of the riser containing the sleeve, and (b) then allowing molten metal to flow into the cavity of the riser containing the riser insert. The density of the riser insert is such that the riser insert floats on the surface of the molten metal when the molten metal enters the cavity of the riser and provides a thermal barrier to reduce heat loss from the riser. The sleeve is shaped such that the riser insert will not be forced out or float off of the riser cavity when the metal is poured.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: September 18, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: Ronald C. Aufderheide
  • Patent number: 7264729
    Abstract: This invention relates to a process for reducing the contaminants in condensate resulting from the conversion of bauxite to alumina.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: September 4, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: Emmett R. Yawn
  • Patent number: 7261821
    Abstract: This invention relates to an automated process for efficiently treating an aqueous system with chlorine dioxide. The process results in high efficiency yields of chlorine dioxide on a continuous basis by minimizing the waste of precursor chemicals. Additionally, the process creates less environmental stress because the formation of unwanted by-products is minimized. The level of chlorine dioxide in the aqueous system treated and other parameters of the process are monitored and adjusted automatically to maintain them within acceptable levels.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: August 28, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: Edward S. Beardwood
  • Patent number: 7244365
    Abstract: This invention relates to a process for safely decontaminating the chill water used in meat processing. The decontaminant used in the process is chlorine dioxide.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: July 17, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Scott A. Marckini, Ronald G. Martin, Russell L. Sims
  • Patent number: 7211137
    Abstract: This invention relates to a binder composition comprising condensed tannin and furfuryl alcohol. The composition can be used to prepare foundry mixes. The foundry mixes are prepared by mixing the composition with an acid or salt of an acid. The foundry mixes are then shaped into molds or cores and cured by heating or by the no-bake process with stronger acid curing catalysts. The molds and cores are used in casting metal articles.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: May 1, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Mark R. Stancliffe, Jorg Kroker
  • Patent number: 7208117
    Abstract: This invention relates to an automated process to inhibit corrosion of the metal surface of an inactive boiler containing water.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: April 24, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: George F. Hays, Vladimir Grigorov, Lois J. Neil, Bruce L. Lubutti
  • Patent number: 7204878
    Abstract: This invention relates to refractory mixes produced by mixing a refractory material with an organic binder and heating to a temperature of typically from about 50° C. to about 100° C. to form a stable composite granulate. The refractor mixes comprise a major amount of a refractory material and a minor amount of a binder composition comprising (a) condensed tannin and (b) furfuryl alcohol. The refractory mixes are used to prepare shaped (e.g. bricks) and unshaped (e.g. blast furnace tap holes, troughs, and tundish liners) refractory products. The invention also relates to a process for preparing the refractory products using the refractory mixes.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: April 17, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: Mark R. Stancliffe
  • Patent number: 7129283
    Abstract: This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) a fluorinated acid, preferably hydrofluoric acid; (d) an effective amount of a oxidizing agent; and (e) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: October 31, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Xianping Wang, H. Randall Shriver, Jorg Kroker
  • Patent number: 7125914
    Abstract: This invention relates to a heat-cured furan foundry binder system comprising a furan binder and a furan monomer or oligomer containing at least two terminal hydroxymethyl groups. The binders are particularly useful as warm-box binders, because they cure faster and foundry shapes (typically cores and molds) made with the binders exhibit higher tensile strengths than those made with conventional heat-cured furan binders.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: October 24, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: Ken K. Chang
  • Patent number: 7122583
    Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl ester of a fatty acid, wherein the alkyl group of the ester is an aliphatic hydrocarbon having from 4 to 8 carbon atoms, preferably butyl tallate; and (d) an effective amount of a free radical initiator. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: October 17, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Jorg Kroker, H. Randall Shriver
  • Patent number: 7081487
    Abstract: This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) an effective amount of a oxidizing agent, and (d) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: July 25, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: H. Randall Shriver
  • Patent number: 7052579
    Abstract: This invention relates to a liquid composition for the control of pitch deposition in pulp and paper making comprising an aqueous solution of (1) a cationic guar polymer, and (2) isobutylene/maleic anhydride copolymer. The invention also relates to a process for inhibiting pitch and stickies deposition in pulp and papermaking systems.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 30, 2006
    Assignee: Ashland Inc.
    Inventor: George K. Wai
  • Patent number: 7019047
    Abstract: This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an alkyl silicate; (c) an ester of a fatty acid, (d) an effective amount of a oxidizing agent, and (e) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: March 28, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: H. Randall Shriver, Xianping Wang, Jorg Kroker
  • Patent number: 6982062
    Abstract: This invention relates to a corrosion inhibiting composition comprising (a) an aliphatic amine, (b) an azole selected from the group consisting of (1) tolyltriazole, (2) benzotriazole, and (3) mixtures thereof, and (c) a benzoate. The compositions are particularly useful in inhibiting the corrosion of metal equipment, particularly equipment made from cast iron and aluminum, and more particularly, engine blocks that have been subjected to water flushing. The invention also relates to a process for inhibiting corrosion, particularly the vapor phase corrosion of metal equipment.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: January 3, 2006
    Assignee: Ashland Inc.
    Inventors: Frank L. M. DeCordt, Niklas Dahlberg, Joseph Mihelic, Michelle Blackowski
  • Patent number: 6974848
    Abstract: This invention relates to low-density thermosetting sheet molding compounds (SMC) including a treated inorganic clay, a curative, a low profile agent, a reinforcing agent, and preferably a low-density filler. The thermosetting SMC are used to prepare exterior and structural thermoset articles, e.g. auto parts, panels, etc.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: December 13, 2005
    Inventors: Helena Twardowska, Laurence G. Dammann, Dennis H. Fisher