Patents by Inventor Edward N. Knickerbocker

Edward N. Knickerbocker 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: 6194532
    Abstract: Elastic fibers and fabrics made from homogeneously branched linear ethylene polymers are disclosed. The elastic fibers and fabrics can be used to produce structures that can have recycle compatibility between elastic and non elastic components. The novel fibers have at least about 50% recovery at 100% strain. The fibers and fabrics are especially useful in making fabricated articles and components thereof (e.g., disposable diapers).
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: February 27, 2001
    Assignee: The Dow Chemical Company
    Inventors: Rexford A. Maugans, Edward N. Knickerbocker, George W. Knight
  • Patent number: 6140442
    Abstract: Elastic fibers and fabrics made from homogeneously branched substantially linear ethylene polymers are disclosed which can be produced on conventional polypropylene or polyethylene fiber or fabric processes. They can be used to produce highly elastic structures that can have recycle compatibility between elastic and non-elastic components. The novel fibers have at least about 50% recovery at 100% strain. The fibers and fabrics are especially useful in making fabricated articles and components thereof (e.g., disposable diapers).
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: October 31, 2000
    Assignee: The Dow Chemical Company
    Inventors: George W. Knight, Rexford A. Maugans, Edward N. Knickerbocker
  • Patent number: 5254299
    Abstract: An improved method of melt spinning linear polyethylene into fiber, especially fine denier fiber, with minimal fiber breakage is disclosed. The method includes imparting high shear into the polyethylene just prior to extrusion through the spinneret die and also results in lower die swell. The high shear can be imparted by use of sintered metal filter media, multiple stacks of fine mesh screens or similar shear inducing media. The method is especially effective when the linear polyethylene contains a relatively high molecular weight species, as determined using gel permeation chromatography with a low angle laser light scattering detector.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: October 19, 1993
    Assignee: The Dow Chemical Company
    Inventors: Stephen P. Krupp, John O. Bieser, Edward N. Knickerbocker
  • Patent number: 5112686
    Abstract: Blends of high molecular weight linear polyethylene and low molecular weight linear polyethylene provide improved staple fiber-forming capabilities over that found with either polymer taken alone. Preferably at least one of the polymers used in the blend is a linear low density polyethylene, LLDPE, which is a linear polyethylene comprising ethylene copolymerized with an amount of a higher alpha-olefin which causes the density of the copolymer to be less than that of a homopolymer made using the same process and catalyst. The higher alpha-olefin can be at least one in the C.sub.3 -C.sub.12 range, preferably in the C.sub.3 -C.sub.8 range.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: May 12, 1992
    Assignee: The Dow Chemical Company
    Inventors: Stephen P. Krupp, John O. Bieser, Edward N. Knickerbocker
  • Patent number: 4990204
    Abstract: Blends of high molecular weight linear polyethylene and low molecular weight linear polyethylene provide improved fiber-forming capabilities over that found with either polymer taken alone. Preferably at least one of the polymers used in the blend is a linear low density polyethylene, LLDPE, which is a linear polyethylene comprising ethylene copolymerized with an amount of a higher alpha-olefin which causes the density of the copolymer to be less than that of a homopolymer made using the same process and catalyst. The higher alpha-olefin can be at least one in the C.sub.3 -C.sub.12 range, preferably in the C.sub.4 -C.sub.8 range.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: February 5, 1991
    Assignee: The Dow Chemical Company
    Inventors: Stephen P. Krupp, Edward N. Knickerbocker, John O. Bieser
  • Patent number: 4842922
    Abstract: Blends of high molecular weight linear polyethylene and low molecular weight linear polyethylene provide improved fiber-forming capabilities over that found with either polymer taken alone. Preferably at least one of the polymers used in the blend is a linear low density polyethylene, LLDPE, which is a linear polyethylene comprising ethylene copolymerized with an amount of a higher alpha-olefin which causes the density of the copolymer to be less than that of a homopolymer made using the same process and catalyst. The higher alpha-olefin can be at least one in the C.sub.3 -C.sub.12 range, preferably in the C.sub.4 -C.sub.8 range.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: June 27, 1989
    Assignee: The Dow Chemical Company
    Inventors: Stephen P. Krupp, Edward N. Knickerbocker, John O. Bieser