Patents by Inventor Anna Nihlstrand

Anna Nihlstrand 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: 7763770
    Abstract: An absorbent article comprises an absorbent body, a liquid-permeable covering layer arranged over a first surface on the absorbent body, and a liquid-permeable liquid-transfer layer arranged between the absorbent body and the liquid-permeable covering layer. The liquid-permeable covering layer comprises a nonwoven material with a pore volume distribution curve with a maximum at a pore radius greater than or equal to 50 ?m and with a wetting angle of at least 120°. The liquid-transfer layer comprises a fibrous layer with a pore volume distribution curve with a maximum at a pore radius of from 105 to 325 ?m.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: July 27, 2010
    Assignee: SCA Hygiene Products AB
    Inventors: Barbro Moberg-Alehammar, Anna Nihlstrand, Anna-Karin Storm, Anna Bagger-Sjöbäck
  • Patent number: 7396783
    Abstract: A fibrous structure testable in a series of run-off tests, wherein each run-off test includes exposing the fibrous structure to a volume of a test solution and the fibrous structure initially is hydrophobic and has been treated to be hydrophilic, wherein the fibrous structure exhibits a run-off level that is less than 5 percent by weight throughout a series of run-off tests, and wherein the series starts with a first run-off test and ends with a fifth run-off test.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: July 8, 2008
    Assignee: SCA Hygiene Products AB
    Inventors: Anna Nihlstrand, Barbro Moberg-Alehammar, Shabira Abbas, Asa Lindstrom, Alain Villermet, Francois Coeuret, Panayotis Cocolios, Bernd Martens, Eckhard Prinz, Franck Forster
  • Publication number: 20070255247
    Abstract: An absorbent article, such as a diaper, pant diaper, incontinence garment, incontinence insert, bed protecting sheet or the like intended to absorb and retain body exudates which may include low viscosity fecal materials. The article has an absorbent core (5) and a cover enclosing the absorbent core, the cover having a liquid pervious inner cover (6) on the body facing side of the absorbent core and a liquid impervious cover (7) on the garment facing side of the absorbent core, wherein the inner cover (6) in at least a fecal receiving area has parts of the rear and crotch portions (3, 4) of the article has a three-dimensionally structured hydrophilic fibrous web material (12) having on the body facing surface a plurality of alternating recessed (13) and elevated portions (14), wherein the recessed as well as the elevated portions are hydrophilic.
    Type: Application
    Filed: June 28, 2007
    Publication date: November 1, 2007
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Barbro Moberg-Alehammar, Anna Nihlstrand
  • Patent number: 6878857
    Abstract: A fibrous structure is described for use in hygienic articles such as diapers, sanitary napkins, incontinence guards, wipes and the like, having one or more polar, silicon containing compounds bound to at least one portion of the surface of the fibrous structure by interaction between the surface and the silicon containing compounds. The fibrous structure exhibits a predetermined degree of hydrophilicity and adhesion properties which are substantially unaffected by wetting of the fibrous structure. Absorbent, hygienic and textile articles comprising such a fibrous structure are also described.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: April 12, 2005
    Assignee: SCA Hygiene Products AB
    Inventors: Thami Chihani, Panayotis Cocolios, François Coeuret, Anna Nihlstrand, Alain Villermet
  • Publication number: 20040181199
    Abstract: An absorbent article comprises an absorbent body, a liquid-permeable covering layer arranged over a first surface on the absorbent body, and a liquid-permeable liquid-transfer layer arranged between the absorbent body and the liquid-permeable covering layer. The liquid-permeable covering layer comprises a nonwoven material with a pore volume distribution curve with a maximum at a pore radius greater than or equal to 50 &mgr;m and with a wetting angle of at least 120°. The liquid-transfer layer comprises a fibrous layer with a pore volume distribution curve with a maximum at a pore radius of from 105 to 325 &mgr;m.
    Type: Application
    Filed: March 1, 2004
    Publication date: September 16, 2004
    Inventors: Barbro Moberg-Alehammar, Anna Nihlstrand, Anna-Karin Storm, Anna Bagger-Sjoback
  • Publication number: 20030153227
    Abstract: The present invention relates to a fibrous structure, being testable in a series of run-off tests, wherein each run-off test comprises exposing said fibrous structure to a volume of a test solution and said fibrous structure initially is hydrophobic and has been treated to be hydrophilic. wherein said fibrous structure exhibits a run-off level that is less than 5 percent by weight throughout a series of run-off tests, wherein the series starts with a first run-off test and ends with a fifth run-off test, use of said fibrous structure, tissue product and nonwoven material made of said fibrous structure. Further, it relates to an absorbent article comprising at least one of said fibrous structure and to use of said absorbent article.
    Type: Application
    Filed: November 26, 2002
    Publication date: August 14, 2003
    Inventors: Anna Nihlstrand, Barbro Moberg-Alehammar, Shabira Abbas, Asa Lindstrom, Alain Villermet, Francois Coeuret, Panayotis Cocolios, Bernd Martens, Eckhard Prinz, Franck Forster
  • Publication number: 20030091754
    Abstract: A method for treating cellulosic fibres, according to which the fibre is submitted to an electrical discharge, in presence of a treatment gaseous mixture comprising a carrier gas, as well as a reducing gas and/or an oxidizing gas, at the atmospheric pressure, characterized in that:
    Type: Application
    Filed: October 24, 2002
    Publication date: May 15, 2003
    Inventors: Thami Chihani, Panayotis Cocolios, Franck Forster, Bernd Martens, Anna Nihlstrand, Eckhard Prinz
  • Publication number: 20020096295
    Abstract: A method increases the wet strength of a tissue material, and a tissue material (2′) which has been subjected to the method. The wet strength agent included in the tissue material (2, 2′) has an intrinsic, normal wet strength-increasing effect which can be achieved by a curing course having chemical reactions and/or physical interactions between different reactive sites of the wet strength agent, between different reactive sites of the cellulose fibers, and reaction and/or interaction between the reactive sites of the wet strength agent and of the cellulose fibers, resulting in a network of polymers which is kept together by bonds.
    Type: Application
    Filed: June 11, 2001
    Publication date: July 25, 2002
    Inventors: Joakim Jardeby, Anna Nihlstrand, Thami Chihani, Sussan Sandberg
  • Patent number: 6423179
    Abstract: A method increases the wet strength of a tissue material, and a tissue material (2′) which has been subjected to the method. The wet strength agent included in the tissue material (2, 2′) has an intrinsic, normal wet strength-increasing effect which can be achieved by a curing course having chemical reactions and/or physical interactions between different reactive sites of the wet strength agent, between different reactive sites of the cellulose fibres, and reaction and/or interaction between the reactive sites of the wet strength agent and of the cellulose fibres, resulting in a network of polymers which is kept together by bonds.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: July 23, 2002
    Assignee: SCA Hygiene Products AB
    Inventors: Joakim Jardeby, Anna Nihlstrand, Thami Chihani, Susan Sandberg