Patents by Inventor L. Steven Edge

L. Steven Edge 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: 6911492
    Abstract: The present invention provides a thermoformable polymer blend that resists surface discoloration when exposed to acidic environments, such as exist within a clothes treating apparatus having an interior region into which is introduced a conditioning composition comprising from about 0.001% to about 10% of a diethylene glycol, from about 0.01% to about 10% of a beta cyclodextrin, from about 0.001% to about 5% of a surfactant, from about 0% to about 2% of a preservative, and the balance water. The discoloration resistant thermoformable polymer blend according to the invention includes: (A) a polymer package including a blend of: (Ai) one or more homopolymers and/or copolymers of polypropylene; (Aii) one or more polymers of vinyl aromatic monomers; (Aiii) one or more block polymers; and (Aiv) one or more styrene-maleic anhydride copolymers; (B) a surface treated mineral filler; (C) an antioxidant package; (D) a zinc-based lubricant; and (E) optionally, a titanium dioxide based colorant system.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: June 28, 2005
    Assignee: Ferro Corporation
    Inventors: Brian D. Keener, Deenadayalu Chundury, Thomas L. McElyea, J. R. Seymour, Curtis A. Hofmann, James C. Vaughn, L. Steven Edge
  • Publication number: 20040143047
    Abstract: The present invention provides a thermoformable polymer blend that resists surface discoloration when exposed to acidic environments, such as exist within a clothes treating apparatus having an interior region into which is introduced a conditioning composition comprising from about 0.001% to about 10% of a diethylene glycol, from about 0.01% to about 10% of a beta cyclodextrin, from about 0.001 % to about 5% of a surfactant, from about 0% to about 2% of a preservative, and the balance water.
    Type: Application
    Filed: January 16, 2003
    Publication date: July 22, 2004
    Applicant: Ferro Corporation
    Inventors: Brian D. Keener, Deenadayalu Chundury, Thomas L. McElyea, J. R. Seymour, Curtis A. Hofmann, James C. Vaughn, L. Steven Edge
  • Patent number: 6723399
    Abstract: The present invention provides a coextruded multilayer thermoplastic film structure for use in forming a medical fluid container such as an I.V. bag. A coextruded multilayer thermoplastic film structure according to the invention includes at least three layers. The first layer (A), which is the layer that contacts medical fluids such as, for example, saline solutions, lactated Ringers solutions, and the like, includes a mixture of a major part of a homopolymer or copolymer of polypropylene and a minor part of a block polymer of a vinyl aromatic monomer and a conjugated diene, a partially hydrogenated derivative thereof, or a selectively hydrogenated derivative thereof to which has been grafted a unsaturated carboxylic reagent.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: April 20, 2004
    Assignee: Ferro Corporation
    Inventors: Deenadayalu Chundury, L. Steven Edge, Kenneth D. Zabielski
  • Publication number: 20030232212
    Abstract: The present invention provides a coextruded multilayer thermoplastic film structure for use in forming a medical fluid container such as an I.V. bag. A coextruded multilayer thermoplastic film structure according to the invention includes at least three layers. The first layer (A), which is the layer that contacts medical fluids such as, for example, saline solutions, lactated Ringers solutions, and the like, includes a mixture of a major part of a homopolymer or copolymer of polypropylene and a minor part of a block polymer of a vinyl aromatic monomer and a conjugated diene, a partially hydrogenated derivative thereof, or a selectively hydrogenated derivative thereof to which has been grafted a unsaturated carboxylic reagent.
    Type: Application
    Filed: June 12, 2002
    Publication date: December 18, 2003
    Inventors: Deenadayalu Chundury, L. Steven Edge, Kenneth D. Zabielski