Patents by Inventor David E. Hanke

David E. Hanke 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: 5466281
    Abstract: A shear-thinning ink composition for use in ball point pens contains a substantially reduced amount of water. These low water-containing inks contain a polymeric material and exhibit superior "cap off" properties by remaining free-flowing after the cap has been off of the pen for at least seven days. The ink compositions of this invention comprise as little as 4 parts by weight of water if the ink utilizes dye as the colorant and as little as 10 parts by weight of water, based on 100 parts of the total composition, if the ink utilizes pigment as the colorant.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: November 14, 1995
    Assignee: National Ink Incorporated
    Inventors: David E. Hanke, Bruce Gindelberger, Saul Heiman
  • Patent number: 4900377
    Abstract: Articles are formed of materials which have at least one layer comprising a mixture of thermoplastic and other fibers. This latter layer may be thermobonded together and then densified along at least a section of the eventual peripheral edge margin of an article to be formed from the material. Thermoplastic material containing cover sheets may also be secured to the core and densified in this manner. The entire eventual peripheral edge margin of the article is typically densified. The material is cut within the densified region or slightly outside the densified region to provide a soft peripheral edge. Absorbent materials may be thermobonded within the layer and surrounded by a densified edge to fix them within the article. The composite materials are used in manufacturing infant car seat liners and other articles. In addition, sections of the material may be densified and provided with weakened areas, such as perforations, to enable users to selectively separate the articles along the perforations.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: February 13, 1990
    Assignee: Weyerhaeuser Company
    Inventors: Douglas E. Redford, Lee E. Perdelwitz, Jr., Ron H. Iff, Paul G. Gaddis, David G. Halley, Michael E. Cotie, David E. Hanke, Amar N. Neogi
  • Patent number: 4891454
    Abstract: A disposable infant seat liner is described with shoulder strap receiving slotways and leg or crotch strap receiving slotways designed to fit infant seat liners having various strap placements. Infant carrier handle or strap receiving slotways may also be included, and may be of an arcuate shape, for receiving infant carrier handles or waist straps. The strap receiving slotways may be selectively opened by a user and may also be perforated to facilitate this selective opening.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: January 2, 1990
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr., David E. Hanke
  • Patent number: 4886697
    Abstract: Materials have at least one layer comprising a mixture of thermoplastic and other fibers. This latter layer may be thermobonded together and then densified along at least a section of the eventual peripheral edge margin of an article to be formed from the material. Thermoplastic material-containing cover sheets may also be secured to the core and densified in this manner. The entire eventual peripheral edge margin of the article is typically densified. The material is cut within the densified region or slightly outside the densified region to provide a soft peripheral edge. Absorbent materials may be thermobonded within the layer and surrounded by a densified edge to fix them within the article. The composite materials are used in manufacturing infant car seat liners and other articles. In addition, sections of the material may be densified and provided with weakened areas, such as perforations, to enable users to selectively separate the articles along the perforations.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 12, 1989
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr, Robert H. Young, Ron H. Iff, David E. Hanke, Kathleen S. Allison, Raimo K. Rahkonen, Amar N. Neogi
  • Patent number: 4885200
    Abstract: A disposable infant seat liner in accordance with the present invention includes an upper section, a middle section and a lower section. Plural shoulder strap receiving slotways are provided in the upper section. These slotways may be accessible from side edges of the infant seat liner. In one embodiment, three shoulder strap receiving positions are provided at each side of the upper section to accommodate shoulder straps of various infant seat designs. First and second leg or crotch strap receiving slotways are also provided in a lower section of the infant seat liner. In one specific embodiment, a Y-shaped leg strap receiving slotway is positioned below an upwardly facing U-shaped slotway. In another embodiment, the lower slotway is T-shaped. Arched side cuts may also be provided in the central section of the infant seat liner to accommodate waist straps and to facilitate fitting of the infant seat liner to an infant car seat.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 5, 1989
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr., David E. Hanke
  • Patent number: 4329394
    Abstract: This invention provides a method for producing a novel, surface-coated, unsize-pressed cellulosic sheet, the cellulosic substrate thereof including at least 25% by weight of cedar fibers. The coating is maintained on or above the surface of the cellulosic substrate so that an optimum hold-out ratio of surface-coating-weight to surface-coating-thickness is maintained.
    Type: Grant
    Filed: September 9, 1980
    Date of Patent: May 11, 1982
    Assignee: Crown Zellerbach Corporation
    Inventor: David E. Hanke
  • Patent number: D312549
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 4, 1990
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr., David E. Hanke
  • Patent number: D313527
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: January 8, 1991
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr., David E. Hanke