Patents by Inventor Monica Ek

Monica Ek 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: 11174324
    Abstract: The present invention relates to a method for manufacturing hydrophobized nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the material from step c) and e) recovering hydrophobized nanocellulose from the suspension. The present invention relates also to a method of manufacturing hydrophobized nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, inexpensive, simple, and direct. Pulp can be used as raw material.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: November 16, 2021
    Assignee: FINECELL SWEDEN AB
    Inventors: Dongfang Li, Jonatan Henschen, Monica Ek
  • Publication number: 20210332153
    Abstract: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Inventors: Dongfang LI, Jonatan HENSCHEN, Monica EK
  • Publication number: 20210284558
    Abstract: A composition and method for recovery and/or bioremediation of oil spills and/or hydrophobic hydrocarbons includes (a) cellulosic material, (b) a charged polymer adsorbed to the cellulosic material, and optionally (c) microorganisms combined with the polymer and/or cellulosic material.
    Type: Application
    Filed: July 12, 2019
    Publication date: September 16, 2021
    Applicant: BIOSORBE AB
    Inventors: Anna OTTENHALL, Monica EK, Johan SIDENMARK, Clas TEGELSTRAND, Erik JOSEPHSSON, Lars MELIN
  • Patent number: 11084885
    Abstract: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: August 10, 2021
    Assignee: FINECELL SWEDEN AB
    Inventors: Dongfang Li, Jonatan Henschen, Monica Ek
  • Publication number: 20200157250
    Abstract: The present invention relates to a method for manufacturing hydrophobized nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the material from step c) and e) recovering hydrophobized nanocellulose from the suspension. The present invention relates also to a method of manufacturing hydrophobized nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, inexpensive, simple, and direct. Pulp can be used as raw material.
    Type: Application
    Filed: June 18, 2018
    Publication date: May 21, 2020
    Applicant: FINECELL SWEDEN AB
    Inventors: Dongfang LI, Jonatan HENSCHEN, Monica EK
  • Publication number: 20180291119
    Abstract: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.
    Type: Application
    Filed: June 8, 2018
    Publication date: October 11, 2018
    Inventors: Dongfang LI, Jonatan HENSCHEN, Monica EK
  • Publication number: 20110136101
    Abstract: The present invention provides immortalized fetal liver cells that express the oncogene Simian virus (SV 40) large T-antigen and specific hepatocyte markers and a method for producing same.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 9, 2011
    Inventors: Jan Holgersson, Suchitra Holgersson, Setara Begum, Marika I. Kleman, Monica Ek
  • Publication number: 20100034858
    Abstract: Biocidal multilayered system, characterized in that it comprises at least the following layers: —an anionic or cationic carrier, preferably cellulose as anionic carrier, —on this carrier alternating polymeric cationic and anionic layers starting with a layer having a charge opposite to that of the carrier, —wherein at least one layer is hydrophobically modified.
    Type: Application
    Filed: November 5, 2007
    Publication date: February 11, 2010
    Applicant: BASF SE
    Inventors: Simon Champ, Oliver Koch, Monica Ek, Eva-Helena Westman, Lars Wagberg, Robert Feuerhake, Hans-Joachim Haehnle