Patents by Inventor Nina Ruohoniemi

Nina Ruohoniemi 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: 20220298264
    Abstract: The present invention relates to a web of fibrous cellulosic material derived from wood pulp, said web being suitable for three-dimensional moulding to form a packaging product, wherein the web comprises >40 wt % of soft wood chemical pulp and at least one strength enhancement agent, wherein the web has a grammage less than 400 g/m2, and wherein the cellulose fibers of said soft wood chemical pulp comprise a fiber curl of >9%.
    Type: Application
    Filed: December 4, 2019
    Publication date: September 22, 2022
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Mari Hiltunen, Nina Ruohoniemi, Titta Lammi, Ville Ribu, Tim Lindfors, Jari Räsänen
  • Patent number: 10676868
    Abstract: The present invention relates to a method for manufacturing a film having an oxygen transmission rate in the range of from 1 cc/m2/24 h to 500 cc/m2/24 h according to ASTM D-3985, at a relative humidity of more than 50% at 25° C., or higher than 75% at 25° C., or higher than 85% at 25° C., wherein the method comprises the steps of: providing a first suspension comprising a microfibrillated cellulose, wherein the dry content of the suspension is in the range of from 0.1 to 10% by weight, adding a wet strength additive to said first suspension, at an amount of from 0.1 to 10 weight-% based on the amount of microfibrillated cellulose (dry/dry), thereby forming a mixture of the microfibrillated cellulose and the wet strength additive, applying said mixture to a substrate to form a fibrous web and drying said web to form said film. The present invention also relates to a film produced according to the method.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 9, 2020
    Assignee: Stora Enso OYJ
    Inventors: Isto Heiskanen, Kaj Backfolk, Esa Saukkonen, Nina Ruohoniemi, Katja Lyytikainen
  • Publication number: 20190048527
    Abstract: The present invention relates to a method for manufacturing a film having an oxygen transmission rate in the range of from 1 cc/m2/24 h to 500 cc/m2/24 h according to ASTM D-3985, at a relative humidity of more than 50% at 25° C., or higher than 75% at 25° C., or higher than 85% at 25° C., wherein the method comprises the steps of: providing a first suspension comprising a microfibrillated cellulose, wherein the dry content of the suspension is in the range of from 0.1 to 10% by weight, adding a wet strength additive to said first suspension, at an amount of from 0.1 to 10 weight-% based on the amount of microfibrillated cellulose (dry/dry), thereby forming a mixture of the microfibrillated cellulose and the wet strength additive, applying said mixture to a substrate to form a fibrous web and drying said web to form said film. The present invention also relates to a film produced according to the method.
    Type: Application
    Filed: September 16, 2016
    Publication date: February 14, 2019
    Inventors: Isto Heiskanen, Kaj Backfolk, Esa Saukkonen, Nina Ruohoniemi, Katja Lyytikainen
  • Patent number: 9926668
    Abstract: A substantially dry composite material comprising a nanofibrillated polysaccharide and two or more additives, wherein the composite nanofibrillated polysaccharide is a microfibrillated cellulose and wherein the additives are lime milk and carbon dioxide, wherein the additives are allowed to react with each other and forming a precipitated calcium carbonate on the nanofibrillated polysaccharide, thereby forming a composite product comprising precipitated calcium carbonate and nanofibrillated polysaccharide.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: March 27, 2018
    Assignee: Stora Enso OYJ
    Inventors: Lars Axrup, Heidi Saxell, Veikko Jokela, Henri Kastinen, Anna Kauppi, Kaj Backfolk, Nina Ruohoniemi, Risto Laitinen, Isto Heiskanen, Teija Laukala
  • Publication number: 20170107669
    Abstract: A substantially dry composite material comprising a nanofibrillated polysaccharide and two or more additives, wherein the composite nanofibrillated polysaccharide is a microfibrillated cellulose and wherein the additives are lime milk and carbon dioxide, wherein the additives are allowed to react with each other and forming a precipitated calcium carbonate on the nanofibrillated polysaccharide, thereby forming a composite product comprising precipitated calcium carbonate and nanofibrillated polysaccharide.
    Type: Application
    Filed: December 23, 2016
    Publication date: April 20, 2017
    Inventors: Lars Axrup, Heidi Saxell, Veikko Jokela, Henri Kastinen, Anna Kauppi, Kaj Backfolk, Nina Ruohoniemi, Risto Laitinen, Isto Heiskanen, Teija Laukala
  • Patent number: 9562328
    Abstract: A method for the production of a composite material comprising nanofibrillated polysaccharide, the method comprising the following steps: (i) providing a liquid suspension of the nanofibrillated polysaccharide; (ii) bringing said liquid suspension in contact with at least one additive, thereby forming a composite material suspension, wherein the composite comprises the nanofibrillated polysaccharide and the at least one additive, (iii) increasing the solid contents of said composite material suspension, thereby forming a high solid contents composite material suspension.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: February 7, 2017
    Assignee: Stora Enso OYJ
    Inventors: Lars Axrup, Heidi Saxell, Veikko Jokela, Henri Kastinen, Anna Kauppi, Kaj Backfolk, Nina Ruohoniemi, Risto Laitinen, Isto Heiskanen, Teija Laukala
  • Publication number: 20150299959
    Abstract: A method for the production of a composite material comprising nanofibrillated polysaccharide, the method comprising the following steps: (i) providing a liquid suspension of the nanofibrillated polysaccharide; (ii) bringing said liquid suspension in contact with at least one additive, thereby forming a composite material suspension, wherein the composite comprises the nanofibrillated polysaccharide and the at least one additive, (iii) increasing the solid contents of said composite material suspension, thereby forming a high solid contents composite material suspension.
    Type: Application
    Filed: November 6, 2013
    Publication date: October 22, 2015
    Inventors: Lars Axrup, Heidi Saxell, Veikko Jokela, Henri Kastinen, Anna Kauppi, Kaj Backfolk, Nina Ruohoniemi, Risto Laitinen, Isto Heiskanen, Teija Laukala