Patents by Inventor Birgit WIRTZ

Birgit WIRTZ 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: 10716713
    Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: July 21, 2020
    Assignee: The Procter & Gamble Company
    Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Patent number: 10653570
    Abstract: An absorbent article including a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core includes: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet tha
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: May 19, 2020
    Assignee: The Procter & Gamble Company
    Inventors: Birgit Wirtz, Walter van der Klugt, Rodrigo Rosati, Ernesto Gabriel Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Patent number: 10517776
    Abstract: An absorbent core for disposable absorbent articles comprising absorbent material having a basis weight that varies across the absorbent core is provided.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: December 31, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Peter Armstrong Ostle, Harald Hermann Hundorf, Birgit Wirtz, Thorsten Frings, Bruno Johannes Ehrnsperger, Maike Thomann
  • Publication number: 20170252232
    Abstract: The invention relates to absorbent cores having high stripes of absorbent material separated by gaps.
    Type: Application
    Filed: May 22, 2017
    Publication date: September 7, 2017
    Inventors: Maike THOMANN, Bruno Johannes EHRNSPERGER, Alessandra MASSA, Manuel LASO, Birgit WIRTZ, Roland ENGEL
  • Patent number: 9687393
    Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: June 27, 2017
    Assignee: The Procter & Gamble Company
    Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel
  • Publication number: 20170095380
    Abstract: An absorbent article including a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core includes: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet tha
    Type: Application
    Filed: December 16, 2016
    Publication date: April 6, 2017
    Inventors: Birgit WIRTZ, Walter van der KLUGT, Rodrigo ROSATI, Ernesto Gabriel BIANCHI, Aniruddha CHATTERJEE, Carsten Heinrich KREUZER, Holger BERUDA
  • Patent number: 9554951
    Abstract: An absorbent article comprising a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core comprises: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet t
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: January 31, 2017
    Assignee: The Procter & Gamble Company
    Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Publication number: 20170000654
    Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.
    Type: Application
    Filed: September 15, 2016
    Publication date: January 5, 2017
    Inventors: Birgit WIRTZ, Walter Pieter Hendrik Laurentius VAN DER KLUGT, Rodrigo ROSATI, Ernesto G. BIANCHI, Aniruddha CHATTERJEE, Carsten Heinrich KREUZER, Holger BERUDA
  • Patent number: 9486371
    Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 8, 2016
    Assignee: The Procter & Gamble Company
    Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Publication number: 20160213533
    Abstract: An absorbent core includes a first carrier substrate and a second carrier substrate; a discontinuous layer of superabsorbent polymer material disposed between the first and second carrier substrates. The superabsorbent polymer material may be disposed in a plurality of superabsorbent material stripes. Two of the stripes are separated by an interstice. The interstice has little or no superabsorbent polymer material and extends from the first carrier substrate to the second carrier substrate.
    Type: Application
    Filed: February 11, 2016
    Publication date: July 28, 2016
    Inventors: Maike THOMANN, Bruno Johannes EHRNSPERGER, Alessandra MASSA, Manuel LASO, Birgit WIRTZ, Roland ENGEL
  • Patent number: 9289334
    Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: March 22, 2016
    Assignee: The Procter & Gamble Company
    Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel
  • Publication number: 20160008187
    Abstract: An absorbent core for disposable absorbent articles comprising absorbent material having a basis weight that varies across the absorbent core is provided.
    Type: Application
    Filed: September 21, 2015
    Publication date: January 14, 2016
    Inventors: Peter ARMSTRONG-OSTLE, Harald Hermann HUNDORF, Birgit WIRTZ, Thorsten FRINGS, Bruno Johannes EHRNSPERGER, Maike THOMANN
  • Publication number: 20140296810
    Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.
    Type: Application
    Filed: June 12, 2014
    Publication date: October 2, 2014
    Inventors: Maike THOMANN, Bruno Johannes EHRNSPERGER, Alessandra MASSA, Manuel LASO, Birgit WIRTZ, Roland ENGEL
  • Patent number: 8791319
    Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 29, 2014
    Assignee: The Procter & Gamble Company
    Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel
  • Publication number: 20140005623
    Abstract: An absorbent article comprising a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core comprises: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topshee
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Publication number: 20140005625
    Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Publication number: 20140005622
    Abstract: An absorbent article including a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core includes: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet tha
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
  • Patent number: 8438704
    Abstract: The present invention refers to a process of making a fibrous structure, wherein roughly graded material is provided to rotating, apertured drums. The drums have at least one needle roll in their inside. The roughly graded material is agitated inside the drums, whereby fibers or small fiber clusters are separated from each other. These fibers and small fiber clusters are flung through the apertures to the outside of the drum, where they are directed onto a foraminous carrier to form a fibrous structure. The fibrous structures are especially useful in absorbent articles.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: May 14, 2013
    Assignee: The Procter & Gamble Company
    Inventors: Birgit Wirtz, Thomas Ludwig Woschnik, Silvio W. Miccio
  • Publication number: 20120316524
    Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 13, 2012
    Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Prof. Manuel Laso, Birgit Wirtz, Roland Engel
  • Publication number: 20120316525
    Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 13, 2012
    Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel