Patents by Inventor Patricia A. Cyr

Patricia A. Cyr 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).

  • Method of forming a multilayer heat sealable film
    Patent number: 5066434
    Abstract: A method for producing a heat sealable structure includes coextruding a substrate layer including a white opaque, cavitated polyolefin film with a second layer which includes a heat sealable ethylene propylene random copolymer, ethylene-propylene block copolymer or ethylene-propylene butene-1 terpolymer; biaxially orienting the coextrudate; treating to increase surface energy; applying a primer coating on the surface; and, applying a surface layer which includes vinylidene chloride copolymer.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: November 19, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Leland L. Liu, Patricia A. Cyr
  • Oriented white opaque multilayer heat sealable film and method of forming same
    Patent number: 4944990
    Abstract: A multi-layer heat sealable structure comprising a substrate including a white opaque polyolefin film, which is preferably cavitated. A second layer is coextruded on at least one surface of the substrate. The second layer includes a heat sealable homopolymer, copolymer, terpolymer or blend thereof. A primer coating is disposed on at least one surface of the second layer. A heat sealable layer is disposed on the primer coating. The heat sealable layer includes a vinylidene chloride copolymer containing at least 50% by weight of vinylidene chloride.A method for producing the present multi-layer heat sealable structure is also disclosed.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: July 31, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Leland L. Liu, Patricia A. Cyr
  • Oriented opaque films containing alkenylaromatic polymers
    Patent number: 4767675
    Abstract: Opaque oriented polyolefinic films, e.g., polypropylene, containing dispersed alkenylaromatic polymers, such as polyalphamethylstyrene as cavitating agent.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: August 30, 1988
    Inventors: Patricia A. Cyr, John R. Wagner, Jr.