Patents by Inventor Darrell L. Wilhoit

Darrell L. Wilhoit 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).

  • Publication number: 20140031186
    Abstract: A bag has a reinforcement that is configured in a predetermined manner for reinforcing at least a portion of the bag. One or more predetermined areas of the bag may be reinforced. The bag may have one or more layers, and may be reinforced by placing and affixing reinforcing media in selected areas. The nature of the reinforcing media—its dimensions and structural properties—may be selected with respect to targeted uses of the bag. The bag may be subjected to one or more types of potentially failure-causing strain (e.g. bending, twisting, puncture, tensile, compression) during the useful life of the bag. For example, the bag may be stressed during filling the bag with product, top sealing, conveying by hand or machine, loading and stacking, transportation, storage, selling and final use by the consumer.
    Type: Application
    Filed: October 1, 2013
    Publication date: January 30, 2014
    Applicant: Graphic Packaging International, Inc.
    Inventors: Gabriele R. Holmes, Darrel L. Wilhoit, John C. Files
  • Patent number: 8579507
    Abstract: A bag has a reinforcement that is configured in a predetermined manner for reinforcing at least a portion of the bag. One or more predetermined areas of the bag may be reinforced. The bag may have one or more layers, and may be reinforced by placing and affixing reinforcing media in selected areas. The nature of the reinforcing media—its dimensions and structural properties—may be selected with respect to targeted uses of the bag. The bag may be subjected to one or more types of potentially failure-causing strain (e.g. bending, twisting, puncture, tensile, compression) during the useful life of the bag. For example, the bag may be stressed during filling the bag with product, top sealing, conveying by hand or machine, loading and stacking, transportation, storage, selling and final use by the consumer.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: November 12, 2013
    Assignee: Graphic Flexible Packaging, LLC
    Inventors: Gabriele R. Holmes, Darrel L. Wilhoit, John C. Files
  • Publication number: 20110052106
    Abstract: A bag has a reinforcement that is configured in a predetermined manner for reinforcing at least a portion of the bag. One or more predetermined areas of the bag may be reinforced. The bag may have one or more layers, and may be reinforced by placing and affixing reinforcing media in selected areas. The nature of the reinforcing media—its dimensions and structural properties—may be selected with respect to targeted uses of the bag. The bag may be subjected to one or more types of potentially failure-causing strain (e.g. bending, twisting, puncture, tensile, compression) during the useful life of the bag. For example, the bag may be stressed during filling the bag with product, top sealing, conveying by hand or machine, loading and stacking, transportation, storage, selling and final use by the consumer.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 3, 2011
    Applicant: GRAPHIC PACKAGING INTERNATIONAL, INC.
    Inventors: Gabriele R. Holmes, Darrel L. Wilhoit, John C. Files
  • Patent number: 5573801
    Abstract: An antimicrobial composition comprising a Streptococcus-derived or Pediococcus-derived bacteriocin or synthetic equivalent antibacterial agent in combination with a chelating agent. Such composition may be used in conjunction with a foodstuff or with a food packaging film (with or without the chelating agent) to protect foodstuffs against growth of harmful bacteria such as Listeria. Also disclosed are methods of protecting foodstuffs using film having a transferrable antimicrobial agent which may protect foodstuff surfaces before and/or following removal of the film and peelable films useful in such methods which may include the above bacteriocin.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: November 12, 1996
    Assignee: Viskase Corporation
    Inventor: Darrel L. Wilhoit
  • Patent number: 5573797
    Abstract: An antimicrobial composition comprising a Streptococcus-derived or Pediococcus-derived bacteriocin or synthetic equivalent antibacterial agent in combination with a chelating agent. Such composition may be used in conjunction with a foodstuff or with a food packaging film.(with or without the chelating agent) to protect foodstuffs against growth of harmful bacteria such as Listeria. Also disclosed are methods of protecting foodstuffs using film having a transferrable antimicrobial agent which may protect foodstuff surfaces before and/or following removal of the film and peelable films useful in such methods which may include the above bacteriocin.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: November 12, 1996
    Assignee: Viskase Corporation
    Inventor: Darrel L. Wilhoit
  • Patent number: 5573800
    Abstract: An antimicrobial composition comprising a Pediococcus-derived bacteriocin or synthetic equivalent antibacterial agent in combination with a chelating agent. Such composition may be used in conjunction with a foodstuff or with a food packaging film (with or without the chelating agent) to protect foodstuffs against growth of harmful bacteria such as Listeria. Also disclosed are methods of protecting foodstuffs using film having a transferrable antimicrobial agent which may protect foodstuff surfaces before and/or following removal of the film and peelable films useful in such methods which may include the above bacteriocin.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: November 12, 1996
    Assignee: Viskase Corporation
    Inventor: Darrel L. Wilhoit
  • Patent number: 5407611
    Abstract: A meat product package including an enclosing film having an EVA-containing inside surface and an in situ aqueous medium-cooked meat product in adhering relation to the film inside surface as the meat contacting and adhering surface. Starch particles are preferably dispersed across the meat contacting surface which has been both irradiated and subjected to corona treatment. A method for corona treating a thermoplastic tube inside surface in which small particles within the flat tube separate opposite surfaces providing voids, and the electric discharge crosses the flat tube through the voids.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: April 18, 1995
    Assignee: Viskase Corporation
    Inventors: Darrel L. Wilhoit, Vincent J. Dudenhoeffer
  • Patent number: 5403668
    Abstract: A method of manufacturing a biaxially oriented heat-shrinkable food packaging film comprising a three component blend wherein the major constituents are a polyethylene, such as, VLDPE or LLDPE or a mixture thereof, EVA, and an ethylene alpha-olefin plastomer copolymer of a density below about 0.90 g/cm.sup.3.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: April 4, 1995
    Assignee: Viskase Corporation
    Inventor: Darrel L. Wilhoit
  • Patent number: 5397640
    Abstract: An improved biaxially oriented heat-shrinkable film of the type used for packaging food, such as poultry, processed meat, and fresh meat.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: March 14, 1995
    Assignee: Viskase Corporation
    Inventors: Paul N. Georgelos, James E. Pelkie, Darrel L. Wilhoit
  • Patent number: 5328705
    Abstract: A meat product package including an enclosing film having an EVA-containing inside surface and an in situ aqueous medium-cooked meat product in adhering relation to the film inside surface as the meat contacting and adhering surface. Starch particles are preferably dispersed across the meat contacting surface which has been both irradiated and subjected to corona treatment. A method for corona treating a thermoplastic tube inside surface in which small particles within the flat tube separate opposite surfaces providing voids, and the electric discharge crosses the flat tube through the voids.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: July 12, 1994
    Assignee: Viskase Corporation
    Inventors: Darrell L. Wilhoit, Vincent J. Dudenhoeffer
  • Patent number: 5304385
    Abstract: A shirred tubular thermoplastic casing article of an ethylene polymer film with a substantially mineral oil-free liquid lubricating coating on the outside surface of the casing, and in contact with the ethylene polymer film, with preferred coatings being polyhydric alcohols such as 1, 2 propylene glycol or glycerine in water, or an aqueous dispersion of lecithin, and a method of manufacturing the article and method for making a processed foodstuff using the article.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: April 19, 1994
    Assignee: Viskase Corporation
    Inventors: Darrel L. Wilhoit, Jeffery A. Oxley
  • Patent number: 5283128
    Abstract: A biaxially heat-shrinkable food packaging film comprises a three component blend wherein the major constituents are a polyethylene such as VLDPE or LLDPE or a mixture thereof, EVA and an ethylene alpha-olefin plastomer copolymer of a density below about 0.90 g/cm.sup.3.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: February 1, 1994
    Assignee: Viskase Corporation
    Inventor: Darrell L. Wilhoit
  • Patent number: 5256458
    Abstract: A shirred tubular thermoplastic casing article of an ethylene polymer film with a substantially mineral oil-free liquid lubricating coating on the outside surface of the casing, and in contact with the ethylene polymer film, with preferred coatings being polyhydric alcohols such as 1, 2 propylene glycol or glycerine in water, or an aqueous dispersion of lecithin, and a method of manufacturing the article and method for making a processed foodstuff using the article.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: October 26, 1993
    Assignee: Viskase Corporation
    Inventors: Jeffery A. Oxley, Darrel L. Wilhoit
  • Patent number: 4842022
    Abstract: An anisotropic pressure sensitive adhesive tape for splicing cellulosic casing which includes a highly extensible isotropic backing and a plurality of filaments arranged on the backing. The filaments are arranged to restrain the extensibility of the tape in one direction so as to produce an anisotropic tape wherein the ratio of longitudinal to transverse stretch is on the order of 10:1 to 20:1.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: June 27, 1989
    Assignee: Viskase Corporation
    Inventors: Jeffery A. Oxley, Darrel L. Wilhoit
  • Patent number: 4372815
    Abstract: This invention is directed to a method for upgrading cellulose by treating same with a chemical to produce a cellulose sheet having substantially increased absorbency, bulk and softness properties. The chemical system comprises the reaction product of a cyanuric halide compound and an alkylene oxide compound, respectively.
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: February 8, 1983
    Assignee: Crown Zellerbach Corporation
    Inventors: David D. Newkirk, Darrel L. Wilhoit