Patents by Inventor William G. Carpenter

William G. Carpenter 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).

  • Foundry mixes containing a polyether polyol and their use
    Patent number: 5455287
    Abstract: This invention relates to foundry mixes which comprise a dry foundry aggregate and a polyurethane-forming foundry binder. The binder components include a polyether polyol component and an organic polyisocyanate component which is cured with a liquid tertiary amine catalyst. The foundry mixes are used to prepare foundry shapes made from foundry mixes by a no-bake process. The resulting foundry shapes are used to cast metal parts from ferrous and non ferrous metals.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: October 3, 1995
    Assignee: Ashland Inc.
    Inventors: William G. Carpenter, William R. Dunnavant
  • Polyurethane-forming binder systems containing 2,2'-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivatives
    Patent number: 5447968
    Abstract: This invention relates to polyurethane-forming foundry binder systems which contain a nitrogen-containing aromatic compound selected from the group consisting of 2,2'-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivatives. The foundry binder systems are particularly useful for making foundry mixes used in the cold-box fabrication process for making foundry shapes. However, the binders systems can also be used to hold foundry shapes, such as molds and cores, together in an assembly.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: September 5, 1995
    Assignee: Ashland Inc.
    Inventors: Kenneth W. Barnett, William G. Carpenter, William R. Dunnavant, Robert B. Fechter
  • Polyurethane-forming foundry binders containing a polyether polyol
    Patent number: 5132339
    Abstract: Certain polyether polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by cold-box and no-bake processes. Such molds and cores are used to make metal castings, particularly from low melting metals such as aluminum.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: July 21, 1992
    Assignee: Ashland Oil, Inc.
    Inventors: William G. Carpenter, William R. Dunnavant
  • Process for filling space in a structure with a polyurethane composite in the presence of water
    Patent number: 5001190
    Abstract: The invention relates to a process for filling space in a structure with a polyurethane composite in the presence of water which comprises adding a coarse aggregate and certain polyurethane binders to the space of the structure to be filled. The process is particularly useful for filling space in roads, runways, and other structures made of asphalt, concrete, or similar building materials.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: March 19, 1991
    Assignee: Ashland Oil, Inc.
    Inventors: William G. Carpenter, Colleen M. Henry
  • No-bake process for preparing foundry shapes for casting low melting metal castings
    Patent number: 4982781
    Abstract: This invention relates to a no-bake process for preparing foundry shapes which utilizes polyurethane-forming binders containing selected polyester polyols. The resulting foundry shapes are particularly useful in preparing castings from low melting metals.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: January 8, 1991
    Assignee: Ashland Oil, Inc.
    Inventors: William G. Carpenter, William R. Dunnavant
  • Polyurethane-forming foundry binders containing a polyester polyol
    Patent number: 4946876
    Abstract: Certain polyester polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by a cold-box process, used to make low melting metal castings.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: August 7, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: William G. Carpenter, William R. Dunnavant
  • Crosslinked vinyl acetate-maleic anhydride heteropolymers and derivatives prepared from them
    Patent number: 3956244
    Abstract: Novel crosslinked heteropolymers of vinyl acetate and maleic anhydride are provided which are useful as aqueous thickeners for aqueous formulations such as cosmetics and latex paints. Ester and amide derivatives of the combined maleic anhydride portion of the heteropolymer are also provided. The process for preparing the crosslinked heteropolymers comprises adding a maleic anhydride monomer, and crosslinking agent monomer, and catalyst in controlled amounts to a monomer solution of vinyl acetate.
    Type: Grant
    Filed: December 24, 1974
    Date of Patent: May 11, 1976
    Assignee: N L Industries, Inc.
    Inventors: William G. Carpenter, Daniel F. Herman, Rudolph J. Berndlmaier