Patents by Inventor Margareta Hulden

Margareta Hulden 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).

  • Publication number: 20090029619
    Abstract: The invention is directed to a low-dusting, soft hydroentangled nonwoven with improved strength, which comprises cellulosic fiber with a pre-determined average length as well as staple fibers, which are either synthetic fibers and/or modified cellulose fibers, as well as a method for making this nonwoven.
    Type: Application
    Filed: February 14, 2006
    Publication date: January 29, 2009
    Applicant: Suominen Nonwovens Ltd.
    Inventors: Arto Kovalainen, Margareta Hulden
  • Publication number: 20050090175
    Abstract: The invention concerns a composite nonwoven formed from fibrous layers bonded together by entanglement of fibers of the layers, wherein the fibrous layers comprise first and second outer layers each comprising a mixture of hydrophobic and hydrophilic fibers, as well as an intermediate layer of hydrophobic fibers sandwiched between the first and the second outer layers, the weight ratio between the hydrophobic and hydrophilic fibers in the first and the second layers being 20:80 to 80:20. The invention also concerns the manufacture of the nonwoven, as well as its use, especially as a wet wipe.
    Type: Application
    Filed: December 5, 2002
    Publication date: April 28, 2005
    Inventors: Heikki Bergholm, Erkki Lampula, Mari Rahkola, Margareta Hulden, Johanna Tiirikainen