Patents by Inventor H. Randall Shriver
H. Randall Shriver 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).
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Publication number: 20130251588Abstract: A composition comprising (a) an epoxy resin; and (b) a hydroperoxide composition comprising a t-butyl hydroperoxide solution that contains no more than 7 weight percent water, and use of the compositions to prepare foundry shapes, the foundry shapes prepared by the process, the use of the foundry shapes to prepare cast metal articles, and the cast metal articles prepared by the process.Type: ApplicationFiled: May 1, 2013Publication date: September 26, 2013Applicant: ASK CHEMICALS L.P.Inventors: Wayne D. Woodson, H. Randall Shriver
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Publication number: 20120014833Abstract: A composition comprising (a) an epoxy resin; and (b) a hydroperoxide composition comprising a t-butyl hydroperoxide solution that contains no more than 7 weight percent water, and use of the compositions to prepare foundry shapes, the foundry shapes prepared by the process, the use of the foundry shapes to prepare cast metal articles, and the cast metal articles prepared by the process.Type: ApplicationFiled: July 16, 2010Publication date: January 19, 2012Inventors: Wayne D. Woodson, H. Randall Shriver
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Patent number: 7723401Abstract: 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: GrantFiled: July 5, 2007Date of Patent: May 25, 2010Assignee: Ashland Licensing and Intellectual Property, LLCInventors: Xianping Wang, H. Randall Shriver, Jorg Kroker
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Patent number: 7407994Abstract: 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: GrantFiled: September 19, 2006Date of Patent: August 5, 2008Assignee: Ashland Licensing and Intellectual Property LLCInventors: Jorg Kroker, H. Randall Shriver
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Patent number: 7129283Abstract: 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: GrantFiled: July 25, 2003Date of Patent: October 31, 2006Assignee: Ashland Licensing and Intellectual Property LLCInventors: Xianping Wang, H. Randall Shriver, Jorg Kroker
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Patent number: 7122583Abstract: 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: GrantFiled: July 25, 2003Date of Patent: October 17, 2006Assignee: Ashland Licensing and Intellectual Property LLCInventors: Jorg Kroker, H. Randall Shriver
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Patent number: 7081487Abstract: 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: GrantFiled: July 25, 2003Date of Patent: July 25, 2006Assignee: Ashland Licensing and Intellectual Property LLCInventor: H. Randall Shriver
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Patent number: 7019047Abstract: 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: GrantFiled: July 25, 2003Date of Patent: March 28, 2006Assignee: Ashland Licensing and Intellectual Property LLCInventors: H. Randall Shriver, Xianping Wang, Jorg Kroker
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Patent number: 6686402Abstract: 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 novolac resin; (b) preferably a bisphenol F; (c) an acrylate; 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.Type: GrantFiled: September 27, 2001Date of Patent: February 3, 2004Assignee: Ashland Inc.Inventors: Wayne D. Woodson, H. Randall Shriver
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Patent number: 6684936Abstract: This invention relates to erosion resistant foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) a multifunctonal acrylate; (c) a phenolic resin that is soluble in (a) and (b); 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.Type: GrantFiled: April 10, 2002Date of Patent: February 3, 2004Assignee: Ashland Inc.Inventors: Wayne D. Woodson, James J. Archibald, H. Randall Shriver
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Patent number: 6662854Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an aliphatic epoxy resin; (b) a multifunctional acrylate; and (c) 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 aluminum castings.Type: GrantFiled: April 5, 2002Date of Patent: December 16, 2003Assignee: Ashland Inc.Inventors: Wayne D. Woodson, H. Randall Shriver
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Publication number: 20030188846Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an aliphatic epoxy resin; (b) a multifunctional acrylate; and (c) 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 aluminum castings.Type: ApplicationFiled: April 5, 2002Publication date: October 9, 2003Inventors: Wayne D. Woodson, H. Randall Shriver
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Patent number: 6604567Abstract: 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 silicate; 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: GrantFiled: February 14, 2002Date of Patent: August 12, 2003Assignee: Ashland Inc.Inventors: Wayne D. Woodson, H. Randall Shriver
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Publication number: 20030066622Abstract: 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 novolac resin; (b) preferably a bisphenol F; (c) an acrylate; 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.Type: ApplicationFiled: September 27, 2001Publication date: April 10, 2003Inventors: Wayne D. Woodson, H. Randall Shriver
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Publication number: 20030032695Abstract: This invention relates to erosion resistant foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) a multifunctonal acrylate; (c) a phenolic resin that is soluble in (a) and (b); 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.Type: ApplicationFiled: April 10, 2002Publication date: February 13, 2003Inventors: Wayne D. Woodson, James J. Archibald, H. Randall Shriver
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Patent number: 4974659Abstract: The subject invention relates to foundry binder systems, which are cured with gaseous sulfur dioxide, comprising as separate components:1. a blend of an acrylated epoxy resin and a monoester solvent and;2. an organic solvent; and a blend of an epoxy resin and an aromatic hydrocarbon solvent which is part of component (a), (b), or both.The invention also relates to the use of the foundry binder systems to prepare foundry mixes, foundry shapes, and metal articles.Type: GrantFiled: October 2, 1989Date of Patent: December 4, 1990Assignee: Ashland Oil, Inc.Inventors: H. Randall Shriver, William R. Dunnayant, Bruce A. Gruber
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Patent number: 4876294Abstract: The subject invention relates to foundry binder systems, which are cured with gaseous sulfur dioxide, comprising as separate components:1. a blend of an acrylated epoxy resin and a monoester solvent and;2. an organic solvent; and a blend of an epoxy resin and an aromatic hydrocarbon solvent which is part of component (a), (b), or both.The invention also relates to the use of the foundry binder systems to prepare foundry mixes, foundry shapes, and metal articles.Type: GrantFiled: September 13, 1988Date of Patent: October 24, 1989Assignee: Ashland Oil, Inc.Inventors: H. Randall Shriver, William R. Dunnavant, Bruce A. Gruber