Patents by Inventor Xianping Wang

Xianping Wang 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).

  • Binders containing an epoxy resin, an ester of a fatty acid, and a fluorinated acid
    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
  • Acrylate-free binders containing an epoxy resin and an alkyl silicate
    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
  • Stabilized phenolic resole resin compositions and their use
    Publication number: 20050020723
    Abstract: This invention relates to a stabilized phenolic resole resin composition comprising a phenolic resole resin and an effective stabilizing amount of an ortho ester. The invention also relates to phenolic urethane binders prepared with the phenolic resole resin compositions, and the use of the binders to make foundry mixes, foundry shapes, and metal castings.
    Type: Application
    Filed: July 24, 2003
    Publication date: January 27, 2005
    Inventors: Chia-hung Chen, Xianping Wang, Jorg Kroker
  • Acrylate-free binders containing an epoxy resin and an alkyl silicate
    Publication number: 20050020727
    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: Application
    Filed: July 25, 2003
    Publication date: January 27, 2005
    Inventors: H. Shriver, Xianping Wang, Jorg Kroker
  • Binders containing an epoxy resin, an ester of a fatty acid, and a fluorinated acid
    Publication number: 20050020725
    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: Application
    Filed: July 25, 2003
    Publication date: January 27, 2005
    Inventors: Xianping Wang, H. Shriver, Jorg Kroker