Patents by Inventor Martindale Nelson

Martindale Nelson 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: 6884480
    Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, high permeability, etc. The homogeneous alpha-olefin/vinyl aromatic copolymer may be present in a monolayer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers thereto.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: April 26, 2005
    Assignee: Cryovac, Inc.
    Inventors: John G. Bradfute, Blaine C. Childress, Marvin R. Havens, C. Michael Lulham, Ronald D. Moffitt, Martindale Nelson, Lawrence R. Norpoth, William P. Roberts, Gloria G. Toney, George D. Wofford
  • Publication number: 20020025394
    Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, high permeability, etc. The homogeneous alpha-olefin/vinyl aromatic copolymer may be present in a monolayer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers thereto.
    Type: Application
    Filed: September 11, 2001
    Publication date: February 28, 2002
    Inventors: John G. Bradfute, Blaine C. Childress, Marvin R. Havens, C. Michael Lulham, Ronald D. Moffitt, Martindale Nelson, Lawrence R. Norpoth, William P. Roberts, Gloria G. Toney, George D. Wofford
  • Patent number: 5658625
    Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of a thermoplastic, homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, as well as many others. The homogeneous alpha-olefin/vinyl aromatic copolymer may be present in a monolayer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers therto. Finally, also included is an RF-sealable film comprising such copolymers.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: August 19, 1997
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: John G. Bradfute, Blaine Clemons Childress, Marvin Havens, Cedric Michael Lulham, Ronald D. Moffitt, Martindale Nelson, Lawrence R. Norpoth, William Peyton Roberts, Gloria Garcia Toney, George Dean Wofford
  • Patent number: 5552170
    Abstract: Distortion of a heat shrinkable cook-in package in a hot air cooking medium is substantially reduced or eliminated by the use of a high sustained shrink force cook-in film as the casing for the package.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: September 3, 1996
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Martindale Nelson
  • Patent number: 5023143
    Abstract: The multilayer shrink film of the present invention provides very low shrink tension approximating some PVC films, while providing relatively high free shrink characteristics and relatively low shrink temperatures. The preferred film has three layers including a relatively thick core layer comprising a polymeric material or blend of polymeric materials having a relatively low melting point, typically less than about 100.degree. C., two outer layers comprising a polymeric material or blend of polymeric materials having a relatively high melting point, typically greater than about 100.degree. C., the material of the outer layers having a melting point at least about 10.degree. C. higher than the melting point of the material of the core layer.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: June 11, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Martindale Nelson
  • Patent number: RE38694
    Abstract: The multilayer shrink film of the present invention provides very low shrink tension approximating some PVC films, while providing relatively high free shrink characteristics and relatively low shrink temperatures. The preferred film has three layers including a relatively thick core layer comprising a polymeric material or blend of polymeric materials having a relatively low melting point, typically less than about 100° C., two outer layers comprising a polymeric material or blend of polymeric materials having a relatively high melting point, typically greater than about 100° C., the material of the outer layers having a melting point at least about 10° C. higher than the melting point of the material of the core layer.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: February 1, 2005
    Assignee: Cryovac, Inc.
    Inventor: Martindale Nelson
  • Patent number: RE37699
    Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of a thermoplastic, homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, as well as many others. The homogeneous alpha-olefin-vinyl aromatic copolymer may be present in a mono-layer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers thereto. Finally, also included is an RF-sealable film comprising such copolymers.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: May 14, 2002
    Assignee: Cryovac, Inc.
    Inventors: John G. Bradfute, Blaine Clemons Childress, Marvin Havens, Cedric Michael Lulham, Ronald D. Moffitt, Martindale Nelson, Lawrence R. Norpoth, William Peyton Roberts, Gloria Garcia Toney, George Dean Wofford