Patents Represented by Attorney John B. Hardaway
  • Patent number: 4112181
    Abstract: A saran laminate film is produced by coextruding saran between outer plys of thermoplastic material.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: September 5, 1978
    Assignee: W. R. Grace & Co.
    Inventors: William G. Baird, Jr., Stanley E. Holbrook, Jeremy A. Platt, deceased
  • Patent number: 4110390
    Abstract: A molded plastic article having either a transparent window or a mirror insert therein is produced by molding a plastic mass around the insert with a layer of insulation or parting material interposed between the plastic mass and the insert.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: August 29, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Tyler K. Olcott, Robert M. Miller
  • Patent number: 4104847
    Abstract: Disclosed is a method and apparatus for loading articles, particularly meat articles, into containers. The apparatus comprises a carriage moveably mounted on a platform. The carriage supports conveying means for moving articles relative to the carriage. The carriage and conveying means are operable for movement relative to the platform such that the carriage is moveable into a container where the conveyor means simultaneously conveys and deposits an article within the container.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: August 8, 1978
    Assignee: W. R. Grace & Co.
    Inventors: James L. Glandon, Stanley D. Hall
  • Patent number: 4104404
    Abstract: An amide/olefin polymeric film laminate suitable for packaging, water cooking, and storing food within the package is prepared by coextruding polyamide and polyolefin layers to form a laminate and then cross-linking the laminate by irradiation. Prior art polyolefin/polyamide laminates delaminate readily when subjected to agitation in hot water, but this tendency is significantly reduced by laminates according to the present invention.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: August 1, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Anne C. Bieler, Henry G. Schirmer
  • Patent number: 4095012
    Abstract: A process for producing oriented films and laminates of nylon 66 and of blends of nylon 66 with nylon 6. In the process, moisture is excluded from the nylon preferably by coextruding a nylon layer between layers of polymeric material to form a laminate; and, after quenching the laminate, orientation may be performed after a relatively long time lapse.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: June 13, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Henry G. Schirmer
  • Patent number: 4085231
    Abstract: Air or other fluid is removed from a container by placing the mouth of the container inside a nozzle and having air or other fluid flow between the mouth of the container and the nozzle so as to extract the air of fluid from the container.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: April 18, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Joseph F. R. Weston
  • Patent number: 4082877
    Abstract: Disclosed is an extensible composite laminar film useful for packaging which includes a first layer of elastomeric polymeric composition and one or more extensible sealable layers of polymeric composition including an interpolymer of ethylene and alkenoic acid or ionomeric salt thereof. In an embodiment the film has a tensile secant modulus of from about 1,000 to about 30,000 and preferably from about 1,000 to about 14,950 pounds per square inch. The film is prepared advantageously by hot blown coextrusion. When stretch wrapped about a variety of products the film typically exhibits a high degree of elastic recovery. Also disclosed is an elastomeric film-forming composition including an ethylene-vinyl acetate interpolymer and an ethylene-propylene interpolymer desirably having a density of not more tha 0.92. The first layer of the film may effectively be prepared from the composition.
    Type: Grant
    Filed: February 14, 1975
    Date of Patent: April 4, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Robert James Shadle
  • Patent number: 4082829
    Abstract: A melt extrusion process is taught which employs a saran of the type generally considered suitable for liquid coating.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: April 4, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Harri J. Brax, Joseph F. Porinchak, Alan S. Weinberg
  • Patent number: 4076122
    Abstract: This invention is directed to a chain of imbricated bags connected together and supported by carriers secured to opposite sides of the bags.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: February 28, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Stanley Darwin Hall
  • Patent number: 4075187
    Abstract: A tire shaped article is blow molded by extruding a tubular parison between movable mold sections, sealing the open end of the parison, injecting air into the parison, moving a lower mold section and the bottom portion of the parison upwardly and expanding an intermediate portion of the parison radially outwardly into a mold cavity.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: February 21, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Tyler Keith Olcott
  • Patent number: 4073647
    Abstract: Cermets are produced by the process of forming a physical mixture of a ceramic powder material with an elemental metal precursor compound and by decomposing the elemental metal precursor compound within the mixture. The decomposition step may be carried out either prior to or during a forming and densification step.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: February 14, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Chester S. Morgan
  • Patent number: 4070514
    Abstract: A method for producing porous graphite for use as bone replacement with a structure for osteon penetration. Graphite is produced with ordered circular pores of 100 to 1000 microns in diameter covering at least 25% of the exposed surfaces. A cylindrical fiber is coated with a carbon flour-pitch mix and is then wound on a bobbin in a predetermined manner. The product of winding is dried, pressed, carbonized, and then graphitized. The fibers are removed either chemically or by volatilization during carbonization or graphitization.
    Type: Grant
    Filed: June 5, 1973
    Date of Patent: January 24, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Walter P. Eatherly, J. M. Robbins, David E. Rosson, Sr.
  • Patent number: 4069080
    Abstract: A cylindrical lens system is used to focus a laser beam into a line upon thermoplastic sheets in their area of contact thereby linearly welding the sheets together. By this method flattened thermoplastic tubing may be converted into bags with either straight or curved linear seals.
    Type: Grant
    Filed: June 11, 1976
    Date of Patent: January 17, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Richard Francis Osborne
  • Patent number: 4068015
    Abstract: Carbon-coated microspheroids useful as fuels in nuclear reactors are produced with a low percentage of cracked coatings and are imparted increased strength and mechanical stability characteristics by annealing immediately after the carbon coating processes.
    Type: Grant
    Filed: November 4, 1976
    Date of Patent: January 10, 1978
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Walter J. Lackey, Jr., John D. Sease
  • Patent number: 4064296
    Abstract: A heat shrinkable multi-layer packaging film having a layer of a hydrolyzed ethylene-vinyl acetate copolymer. Preferably, the film is formed by coextruding the hydrolyzed ethylene-vinyl acetate copolymer layer between two other polymeric layers, at least one of which is cross-linkable, and thereafter irradiating and orienting the multi-layer structure. The resulting film is heat shrinkable and has very low oxygen permeability.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: December 20, 1977
    Assignee: W. R. Grace & Co.
    Inventors: Norman D. Bornstein, Donald J. D'Entremont, Alan S. Weinberg, Henry G. Schirmer, Joseph Zu Sun
  • Patent number: 4058953
    Abstract: A machine and method for evacuating sealed packages formed from flexible sheet material and for flushing or filling, as required, the evacuated package with an inert gas. The product enclosed within the package is preferably a food product such as luncheon meats, sausage, cheese, or the like. In constructing the package, one or more spaced apart apertures are formed in one sheet and a slit is formed in the other sheet so that preferably the slit will be on the opposite side of the package from the apertures. An initial peripheral seal is made between the two sheets to enclose the slit, apertures and product. The package is then evacuated through the slit with the sheets being separated and then the slit is sealed and gas introduced through the apertures, or, for a gas flushed package, the slit may be sealed after gas is introduced. Next the apertures are sealed thus forming a gas flushed or filled package.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: November 22, 1977
    Assignees: W. R. Grace & Co., Hooper, Inc.
    Inventors: Philip A. Sanborn, Jr., Shelby F. Westbrook, Donald A. Sullivan
  • Patent number: 4056587
    Abstract: Foam styrene polymer sheet is expanded to form foam products having lower density by a process which includes (a) contacting the foam styrene polymer sheet with an aqueous composition, (b) maintaining the aqueous composition in contact with the sheet to effect impregnation of the sheet by the aqueous composition, and thereafter (c) heating the impregnated sheet to expand the sheet. The expanded products are useful as thermal insulation and packaging material.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: November 1, 1977
    Assignee: W. R. Grace & Co.
    Inventors: Arvid Honkanen, Paul Joonase
  • Patent number: 4048428
    Abstract: A film combination including two plies of thermoplastic polymer and therebetween a vinylidene chloride crystalline copolymer film which is substantially devoid of pinholes and scratches and has low oxygen permeability is prepared by coextruding the copolymer as a melt between melts of outer plies of thermoplastic polymer. The film combination may be biaxially oriented or substantially unoriented and may be irradiated with high energy electrons. The film combination can be used for many packaging applications.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: September 13, 1977
    Assignee: W. R. Grace & Co.
    Inventors: William G. Baird, Jr., Stanley E. Holbrook, Jeremy A. Platt
  • Patent number: 4043936
    Abstract: Biological denitrification of nitrate solutions at concentrations of greater than one kilogram nitrate per cubic meter is accomplished anaerobically in an upflow column having as a packing material a support for denitrifying bacteria.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: August 23, 1977
    Assignee: The United States of America as represented by United States Energy Research and Development Administration
    Inventors: Chester W. Francis, Frank S. Brinkley
  • Patent number: 4044187
    Abstract: The seal strength, dimensional stability, bond strength between plies, and ink adhesion of certain film laminates may be significantly increased by irradiating the substrate, forming the laminate, and then irradiating the entire laminate whereas in the prior art the practice is to only irradiate the substrate layer prior to forming the laminate.
    Type: Grant
    Filed: May 22, 1975
    Date of Patent: August 23, 1977
    Assignee: W. R. Grace & Co.
    Inventor: William P. Kremkau