Patents by Inventor Hans E. Heyn

Hans E. Heyn 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: 6517282
    Abstract: An erosion control mat having buoyant fronds is deployed in a body of water to enhance the accumulation of sediments. The mat includes a plurality of frond lines arranged in a fanfold pattern. Each frond line include a continuous elongate strip and a plurality of side-by-side buoyant fronds (strands). The frond lines are made of linear low density polyethylene (LLDPE), preferably metallocene catalyzed LLDPE.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: February 11, 2003
    Assignee: HEI LLC
    Inventors: Richard A. Marsteller, Terence J. Whalen, Hans E. Heyn
  • Publication number: 20020192036
    Abstract: An erosion control mat comprising buoyant fronds is deployed in a body of water to enhance the accumulation of sediments. The mat includes a plurality of frond lines arranged in a fanfolded pattern. Each frond line includes a continuous elongate strip and a plurality of side-by-side buoyant fronds (strands). The frond lines are made of linear low density polyethylene (LLDPE) preferably LLDPE manufactured by a metallocene or other single site catalyzed process.
    Type: Application
    Filed: May 14, 2001
    Publication date: December 19, 2002
    Inventors: Richard A. Marsteller, Terence J. Whalen, Hans E. Heyn
  • Patent number: 6106956
    Abstract: A polymer film comprising at least first and second contiguous and coextruded portions, wherein the first portion is extruded from a first polymer composition containing a filler material in an amount sufficient to increase the water vapor permeability of the first portion relative to the second portion, and the second portion is extruded from a second polymer composition such that a tensile strength of the second portion is greater than the tensile strength of the first portion. Such polymer films allow for highly vapor permeability, while providing portions with sufficient strength to allow for taping or attachment of fastening devices.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: August 22, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Hans E. Heyn, Kevin A. Brady
  • Patent number: 4978570
    Abstract: A disposable diaper having an elastic waist is provided with a foam strip to cushion stresses of the elastic band in the waist area.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: December 18, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Hans E. Heyn, Russell H. Narramore
  • Patent number: 4376146
    Abstract: A secondary carpet backing for adherence to the underside of a carpet material via an adhesive. The secondary carpet backing comprises a weft inserted knit material having a series of warp yarns forming spaced rows of warp-wise extending chain stitches, and a series of weft yarns forming spaced rows extending transversely of the series of warp yarns. The weft yarns are laid in the chain stitches and serve to interconnect adjacent rows of the warp yarns. The warp yarns have a denier in the range of 300-700 and the weft yarns have a denier in the range of 1300-2300. Such a secondary carpet backing exhibits improved adhesion characteristics when adhered to the underside of a carpet material with a conventional adhesive.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: March 8, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Tibor Juhasz, Hans E. Heyn