Patents by Inventor Raimo K. Rahkonen

Raimo K. Rahkonen 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: 4911702
    Abstract: The invention is an attachment means for an incontinent garment or diaper. It is particularly useful with a garment which has a relatively long, as measured in a longitudinal direction, waist or abdominal encircling portion. Prior known garments of this type normally require two adhesive attachment tabs. One of these is used to tighten the leg encircling portion of the garment and the other the waist encircling portion. The present invention accomplishes this with a single adhesive tab. The attachment system has an elastic anchor strip adjacent the longitudinal margins of the rear waist encircling portion of the garment. This is attached at each end with an unattached free zone in the center. A single attachment tab has one end located on the anchor strip and is generally normal thereto. When the garment is put in place on a wearer, the anchor strip serves as a yoke to simultaneously place tension around the waist area and leg areas of the garment.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: March 27, 1990
    Assignee: Weyerhaeuser Company
    Inventors: Audrey A. O'Leary, Raimo K. Rahkonen
  • 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