Patents Represented by Attorney, Agent or Law Firm Jennifer L. Skord
  • Patent number: 5025922
    Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is nylon 12 and the agent is N-butyl benzenesulfonamide. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: June 25, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marvin R. Havens, Joseph R. Lovin
  • Patent number: 5024792
    Abstract: Disclosed is a film having antistatic characteristics and a method to make the film. The film comprises a blend of polyether block amide copolymer with an aromatic sulfonamide antistatic agent.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: June 18, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Marvin R. Havens
  • Patent number: 5002782
    Abstract: In order to reduce splitting in a perforated, heat shrinkable, thermoplastic bags made from seamless tubing, rather than employ needle punched perforations, it has been discovered that slits cut by a knife blade will surprisingly reduce the splitting when a product, such as a meat product, is cooked within the bag.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: March 26, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Timothy T. Oberle
  • Patent number: 5001015
    Abstract: Disclosed is a film having antistatic characteristics and a method to make the film. The film comprises a blend of polyolefin with an antistatic agent chosen from fatty acid esters of polyhydroxy alcohols, polyalkoxylated compounds or mixtures thereof.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: March 19, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Marvin R. Havens
  • Patent number: 4999252
    Abstract: An acid copolymer/quaternary amine mixture is disclosed which is permanently antistatic. The acid copolymer is a copolymer of (i) a major amount by mol % of an alpha-olefin of the formula RCH.dbd.CH.sub.2 wherein R is H or C.sub.1 to C.sub.8 alkyl, and (ii) a minor amount by mol % of an alpha,beta-ethylenically unsaturated carboxylic acid. The quaternary amine is of the formula [(R.sup.1)(R.sup.2)(R.sup.3)(R.sup.4)N].sup.+ [X].sup.- wherein R.sup.1 is selected from H, aryl, or C.sub.1 to C.sub.50 alkyl optionally having one or more non-contiguous C.dbd.O or NHC.dbd.O or --S-- or --O-- in the carbon chain, or the same as R.sup.2 ; each of R.sup.2, R.sup.3, and R.sup.4 is the same or different and selected from H, C.sub.1 to C.sub.18 alkyl optionally substituted with one or more OH or from --(R.sup.5 --O).sub.a --H where a is an integer from 1 to 10 and R.sup.5 is ethylene or propylene; and X is an anion selected from chloride, bromide, iodide, fluoride, nitrate, fluoborate, phosphate, C.sub.1 to C.sub.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: March 12, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marvin R. Havens, William P. Roberts
  • Patent number: 4983171
    Abstract: Disclosed is an ostomy bag that is made with air cushion film so that the air bubbles are on the bag outside. Air cushion film is known as bubblepak in the industry. The bubbles afford a high degree of comfort to the person wearing the ostomy bag.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: January 8, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Henry G. Schirmer
  • Patent number: 4965136
    Abstract: This invention relates to films made from vinylidene chloride copolymers. Specifically, this invention relates to a method and compositions for lowering the oxygen permeability and enhancing the thermal stability and enhancing the melt shear stability of monolayer and multilayer packaging films having a layer of vinylidene chloride copolymer film by adding an organic silicon polymer to the vinylidene chloride copolymer. The conventional stabilizer/plasticizer combination of epoxy resin and 2-ethyl-hexyl diphenyl phosphate may be eliminated from the vinylidene chloride copolymer.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: October 23, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Walter B. Mueller
  • Patent number: 4958735
    Abstract: An easy open, hermetically sealed, display package made from a single sheet of thermoplastic, gas barrier, heat shrinkable film is provided. The sheet is folded to form one end of the package, the fold being spaced apart from a seal parallel to the fold line with the material between the seal and the fold line being unshrunken and the remainder of the material being shrunk around the product and sealed on all sides. A unshrunken strip of plastic material having a line of weakness is adhered to the unshrunken portion which is also provided with a line of weakness which also corresponds to the line of weakness in the unshrunken strip. The material on both sides of the line of weakness serves as tear tabs.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: September 25, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Robert A. Odabashian
  • Patent number: 4957790
    Abstract: Described is the presence of both a pro-rad linking agent and irradiation such as electron beam irradiation, in the manufacturing process for making an oriented, i.e. heat-shrinkable, polymeric film. The presence of both results in an amount of cross-linking that is effective to accomplish an increased orientation rate during manufacturing.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: September 18, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Thomas C. Warren
  • Patent number: 4949430
    Abstract: A stuffing horn includes a cylindrical sleeve in which a least one channel located within the sleeve provides for the transfer of liquid additive from a liquid source to the outer extremity of the stuffing horn. Atomizers in the outer face of the horn provide a means of transferring the liquid additive from the horn onto the interior of a food-product thermoplastic container such as a casing or bag. The liquid additive, such as liquid smoke or colorant, is then transferred to the exterior surface of the stuffed meat product.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: August 21, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Thomas G. Stanek
  • Patent number: 4948604
    Abstract: A package of shrunken heat-shrinkable flexible film conformed to a contained food product has no gap or virtually no gap between the food product and the shrunken film. Prior to heat shrinking, the package is subjected to non-ionizing radiation.
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: August 14, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Richard O. Kuehne, Karl R. Deily, Timothy L. Lawlis
  • Patent number: 4931397
    Abstract: Antifoaming agents are commonly used during culturing of enzyme-producing microorganisms. These antifoams often persist through enzyme processing, slowing filtrations, clogging filtration membranes and adversely affecting the quality of the final product. The present invention describes a method for removing antifoams, and often carbohydrates and pigments, from enzyme systems using mineral clay, the preferred clay being bentonite.
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: June 5, 1990
    Assignee: Miles Inc.
    Inventors: Curtis J. Montgomery, Chimanbhai P. Patel, Jayarama K. Shetty
  • Patent number: 4928474
    Abstract: A method of providing oxygen barrier properties to a retorted container is described. A retort container is filled with a product sensitive to spoilage from oxygen contact, such as certain food. The filled container is heat sealed closed, retorted, and then enclosed with a oxygen barrier material.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: May 29, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Henry G. Schirmer
  • Patent number: 4925687
    Abstract: A method of packaging turkey emulsion and turkey skin in a flexible plastic package wherein the turkey skin has been frozen prior to insertion into the package.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: May 15, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Stephen L. Gray, John E. Horner
  • Patent number: 4909881
    Abstract: This invention relates to a method of improving the adhesion between a layer of vinylidene chloride copolymer and a layer of a linear ethylene/alpha-olefin copolymer and to the film produced thereby. More particularly, the invention relates to heat shrinkable films having a barrier layer of vinylidene chloride copolymer and a layer of linear low density polyethylene or very low density polyethylene and to a method for increasing the adhesion between the layers and thereby decreasing the incidence of delamination by blending the linear ethylene/alpha-olefin copolymer with an ethylene/butyl-acrylate copolymer.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: March 20, 1990
    Assignee: W. R. Grace and Co.-Conn.
    Inventor: Steven B. Garland
  • Patent number: 4899521
    Abstract: Disclosed is a film having antistatic characteristics and a method to make the film. The film comprises a blend of polyether block amide copolymer with an aromatic sulfonamide antistatic agent.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: February 13, 1990
    Assignee: W. R. Grace & Co. - Conn.
    Inventor: Marvin R. Havens
  • Patent number: 4898771
    Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is polyethylene and the agent is a mixture of polyethoxylated cetyl alcohol and glyceryl monostearate. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: February 6, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Marvin R. Havens
  • Patent number: 4890739
    Abstract: A package including a sealed, internal label comprises a product having a flat horizontal surface with a heat sealable label positioned thereon. A heat sealable web of heat formable, unshrunken film forms around the product, the web covering and heat being sealed to the label. A closure member encloses the uncovered portion of the product and being sealed to the covering web.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: January 2, 1990
    Inventors: James Mize, Jr., Kent A. Davis, Henry W. Stockley
  • Patent number: 4889731
    Abstract: A package for extended storage and in-store display of fresh red meat is disclosed. Preferably the package is made by a vacuum skin packaging process wherein the forming web is a composite peelable film having a peelable oxygen barrier layer and an oxygen permeable skin layer which remains to enclose the product when the peelable film is removed after storing. A means and method for readily initiating the peeling process is provided by a combination of a manual pull tab and selected perforations of the forming web.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: December 26, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Allen C. Williams, Jr.
  • Patent number: 4882894
    Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is nylon 12 and the agent is N-butyl benzenesulfonamide. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: November 28, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marvin R. Havens, Joseph R. Lovin