Patents Represented by Attorney, Agent or Law Firm Lucas K. Shay
  • Patent number: 8182734
    Abstract: Disclosed are poly(hydroxyalkanoic acid) resin compositions comprising poly(hydroxyalkanoic acid), such as polylactic acid, and a polyoxymethylene. Also disclosed are articles such as films, sheets and thermoformed containers comprising the compositions.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: May 22, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Julius Uradnisheck
  • Patent number: 8163848
    Abstract: Disclosed are toughened, antistatic resin composition and an article comprising the composition wherein the composition comprises or consists essentially of poly(hydroxyalkanoic acid), such as polylactic acid; an impact modifier comprising an ethylene copolymer; and an ion conducting polymer.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: April 24, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Toshikazu Kobayashi, Barbara Ann Wood
  • Patent number: 8137776
    Abstract: Disclosed is a multilayer structure, which comprises or is produced from a foil laminated to thermoplastic compositions using ethylene/butyl acrylate copolymer compositions as a tie layer. The multilayer structures can be useful as packaging films and industrial films. Also disclosed is a lamination process for producing the structure. Further disclosed are packages comprising the structures.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: March 20, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Barry Alan Morris, Yves M. Trouilhet
  • Patent number: 8129009
    Abstract: Disclosed are lamination processes using an ethylene copolymer to provide improved adhesion of foil to thermoplastic compositions (for example, polyester or polyolefins such as polyethylene and polypropylene). Also disclosed are multilayer structures comprising foil laminated to thermoplastic compositions using ethylene copolymer composition as a tie layer. These multilayer structures are useful as packaging films and industrial films. Also disclosed are packages that comprise these multilayer structures.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: March 6, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Barry Alan Morris
  • Patent number: 8119235
    Abstract: Decorative ionomeric surfaced film and sheet (e.g., multilayer co-extruded polymer) and articles made therefrom (e.g., automotive panels and parts) exhibiting good weatherability, mar resistance, and surface appearance of a high quality automotive finish (including color, haze, gloss, and DOI) and economical process for making (e.g., co-extrusion) and using (e.g., thermoforming and injection backfilling) the same.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: February 21, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Randall Allen Vogel, I-Hwa Lee, Sumita Sanjeevi Ranganathan, Lori J. Pike
  • Patent number: 8110138
    Abstract: Disclosed is a process comprising extruding a poly(hydroxyalkanoic acid) (PHA) to produce a first article; thermoforming the first article in a heated mold having a temperature ? about 90° C. to produce a second article; and heat treating the second article by holding the second article in the heated mold for less than about 40 seconds to produce a thermoformed article wherein the PHA composition comprises or consists essentially of PHA and 0 to about 4%, based on the weight of the composition, of a nucleator; and the first article is a film or sheet and is partially crystallized.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: February 7, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Julius Uradnisheck
  • Patent number: 8108992
    Abstract: A method of making a self-supporting field director structure for use in heating an article in a microwave oven comprises in any operative order, the steps of folding a first and a second elongated vane blank along a central fold line to form at least two V-shaped vane doublets; inserting each of the vane doublets into a slotted annular support member so that each vane in each vane doublet extends through an adjacent slot in the annular support member; and attaching the vane doublets at their vertices to define a vane array.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: February 7, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: William R. Corcoran, Jr.
  • Patent number: 8097114
    Abstract: A non-autoclave process for producing a glass laminate comprises applying a sub-assembly including a rigid layer and an ionomer interlayer in a vacuum bag or vacuum press under vacuum followed by heating, cooling, and releasing vacuum.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: January 17, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Luc A. Moeyersons
  • Patent number: 8097113
    Abstract: A process comprises constructing a sub-assembly including a rigid layer and a poly (vinyl acetal) interlayer in a vacuum bag or vacuum press; applying vacuum to the vacuum bag or vacuum press for a maximum of 30 to 60 minutes while maintaining the sub-assembly at a temperature between 10° C. and 22° C. to produce a cooled sub-assembly; increasing the temperature of the cooled sub-assembly to at least 100° C. or 125° C. over a minimum of 10 minutes or 20 minutes to produce a heated sub-assembly; maintaining the heated sub-assembly at minimum of 100° C. or 125° C. for a minimum of 10 minutes or 20 minutes to form a laminate; cooling the laminate at a rate of at least 0.5° C./minute until the laminate reaches a temperature below 40° C.; contemporaneously with the cooling, removing the vacuum from the vacuum bag, containing the laminate, and allowing the laminate to reach atmospheric pressure.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: January 17, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Luc A. Moeyersons
  • Patent number: 8075967
    Abstract: Disclosed is a blended composition comprising a humidity-dependent composition having a ratio of wet cup permeance to dry cup permeance greater than 10 and a crystallizable polymer sufficiently permeable to oxygen, carbon dioxide and water vapor, exhibiting an increase in permeability to at least one of oxygen and carbon dioxide by a factor of at least 2.5 over a temperature range of 10° C. between 0° C. and 40° C. Also disclosed are packaging materials comprising the blended composition and methods for storing respiring materials using the packaging materials.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: December 13, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 8057872
    Abstract: Disclosed is a multilayer structure comprising a layer of humidity-dependent composition having a ratio of wet cup permeance to dry cup permeance greater than 10 and a layer of crystallizable polymer sufficiently permeable to oxygen, carbon dioxide and water vapor, exhibiting an increase in permeability to at least one of oxygen and carbon dioxide by a factor of at least 2.5 over a temperature range of 10° C. between 0° C. and 40° C. Also disclosed are packaging materials comprising the multilayer structure and methods for storing respiring materials using the packaging materials.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: November 15, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 6706852
    Abstract: A process for producing a partially ester-exchanged SIPM such as an alkali metal bis(2-hydroxyethyl) 5-sulfoisophthalate produced from an alkali metal dimethyl 5-sulfoisophthalate in an alcohol is disclosed. The partially ester-exchanged SIPM in an alcohol can be used to copolymerize with oligomer of terephthalic acid or dimethyl terephthalate and an alcohol. Also disclosed is a process for controlling the color of a dyeable polyester using a phosphorous compound.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: March 16, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jiwen F. Duan, Xianyin Ma
  • Patent number: 6426398
    Abstract: A poly(trimethylene terephthalate) polymer composition (a) comprising repeat units derived from terephthalic acid and 1,3- propanediol, (b) having a b value of less than about 10, and (c) having an intrinsic viscosity (IV) in the range from about 0.74 to about 2.0. The poly(trimethylene terephthalate) polymer composition does not contain a blue masking pigment. It is prepared by a process comnprising contacting, in the presence of a catalyst comprises tin and titanium. A copolymer that contains up to 20 mole percent of another acid and/or a second alcohol is also disclosed. Further disclosed is a composition of, or comprising, a bis (3-hydroxypropyl) terephthalalte prepolymer. The bis (3-hydroxypropyl) terephthalalte prepolymer and poly(trimethylene terephthalalte) can each contain 10 to 100 ppm tin and 10 to 200 ppm titanium relative to the terephthalic acid content.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: July 30, 2002
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Joseph V Kurian, Yuanfeng Liang, Donald Edward Putzig
  • Patent number: 6184187
    Abstract: Novel phosphorus compounds are effective corrosion inhibitors for perfluoropolyether lubricating oils and greases, and hydraulic fluids.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: February 6, 2001
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Jon L. Howell, Michael A. Hofman
  • Patent number: 6183710
    Abstract: A sodium cyanide composition having a paste-like consistency is provided which comprises sodium cyanide, a base, water, and a rheology modifier. Also provided are processes for producing and using the composition. The composition can be used in applications that require sodium cyanide solution.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: February 6, 2001
    Assignee: E. I du Pont de Nemours and Company
    Inventors: Janet Marie Rogers, Thomas Peter Tufano
  • Patent number: 6124245
    Abstract: A composition is provided which comprises a polymer comprising repeat units derived from an unsaturated amide, an N-vinyl lactam, and optionally, a vinyl acid. Also provided is a water-based fluid composition which can be used as drilling fluid wherein the composition comprises calcium chloride and the polymer. Further providing is a process for using a water-based fluid wherein the process comprises contacting a subterranean formation with the water-based fluid composition disclosed above to effect the control of fluid loss of the water-based fluid composition.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: September 26, 2000
    Assignee: Phillips Petroleum Company
    Inventor: Bharat B. Patel
  • Patent number: 6074975
    Abstract: A catalyst composition, a process for producing the composition, and a hydrotreating process for converting a hydrocarbon stream such as, for example, gasoline, to olefins and C.sub.6 to C.sub.8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The catalyst composition comprises a zeolite and a promoter. The process for producing the composition comprises the steps: (1) combining a zeolite with a promoter under a condition sufficient to incorporate the zeolite with the promoter to produce a first promoted zeolite; (2) incorporating the first promoted zeolite with a second promoter to produce a second promoted zeolite; and (3) heating the second promoted zeolite. The hydrotreating process comprises contacting a hydrocarbon stream with the catalyst composition under a condition sufficient to effect the conversion of a hydrocarbon to an olefin and a C.sub.6 to C.sub.8 aromatic hydrocarbon.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: June 13, 2000
    Assignee: Phillips Petroleum Company
    Inventors: Jianhua Yao, Charles A. Drake
  • Patent number: 6051670
    Abstract: A gelling composition and a process for using the gelling composition for oilfield applications are provided. The gelling composition comprises a water-soluble polymer, a crosslinking agent, and a liquid wherein the water-soluble polymer comprises repeat units derived from a nitrogen-containing olefinic monomer and optionally an olefinic comonomer. The gelling composition can be used in drilling fluids, workover fluids, completion fluids, permeability corrections, water or gas coning prevention, fluid loss prevention, matrix acidizing, fracture acidizing, and combinations of any two or more thereof.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: April 18, 2000
    Assignee: Phillips Petroleum Company
    Inventors: Iqbal Ahmed, Ahmad Moradi-Araghi, Aly-Anis Hamouda, Odd Ivar Eriksen
  • Patent number: 6037299
    Abstract: A composition comprises silicon, aluminum, zirconium, and boron. A process for producing the composition comprises contacting a silicon compound, an aluminum compound, a zirconium compound, and a boron compound under a condition sufficient to effect the production of a composition comprising silicon, aluminum, zirconium, and boron. Also disclosed is a process for catalytically cracking a hydrocarbon-containing fluid which comprises contacting said hydrocarbon-containing fluid with a catalyst composition which comprises silicon, aluminum, zirconium, and boron.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: March 14, 2000
    Assignee: Phillips Petroleum Company
    Inventors: Dwayne R. Senn, Lyle R. Kallenbach
  • Patent number: 5986153
    Abstract: A process for substantially stabilizing the color of a fluid which comprises an olefin is disclosed. The process comprises contacting the fluid with a composition, which comprises aluminum, zirconium and a borate, under a condition effective to stabilize the color of the fluid.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: November 16, 1999
    Assignee: Phillips Petroleum Company
    Inventors: Lyle R. Kallenbach, Jeffrey W. Freeman