Patents by Inventor Taina Ohra-Aho

Taina Ohra-Aho 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).

  • A method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing material
    Publication number: 20230023359
    Abstract: According to an example aspect of the present invention, there is provided a method of removing volatile compounds from a lignin-containing material, the method comprising: providing a material comprising lignin and volatile compounds; treating the material by a distillation method in order to vaporize at least a part of the volatile compounds.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 26, 2023
    Inventors: Outi Poukka, Katja Salmenkivi, Lauri Pehu-Lehtonen, Pauliina Sjögård, Tarja Tamminen, Tiina Liitiä, Taina Ohra-aho
  • Bio-based mineral oil barrier coatings and films
    Patent number: 11214046
    Abstract: According to an example aspect of the present invention, there is provided bio-based mineral oil barrier coatings and films usable for decreasing mineral oil migration, for example in food packaging materials, and thus improving the safety of the materials facing the mineral oil containing environment.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: January 4, 2022
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Jari Vartiainen, Christiane Laine, Marja Pitkänen, Taina Ohra-Aho, Adina Anghelescu-Hakala
  • Method for activating and precipitating lignin
    Patent number: 10894866
    Abstract: According to an example aspect of the present invention, there is provided a method of producing reactive lignin from an alkaline lignin containing stream, such as black liquor, e.g. kraft lignin, by using thermal treatment with temperatures between 200 and 250° C. for simultaneous activation (for example by demethylation and/or demethoxylation) and precipitation of the lignin.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: January 19, 2021
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Hanne Wikberg, Taina Ohra-Aho, Juha Leppävuori, Tiina Liitiä
  • Method for producing reactive lignin
    Publication number: 20200011012
    Abstract: According to an aspect of the present invention, there is provided a method of producing reactive lignin from an alkaline lignin containing stream, such as black liquor, e.g. kraft lignin, by using thermal treatment with temperatures between 200 and 300° C., and a retention time of 1 h or less, for activation of the lignin.
    Type: Application
    Filed: December 21, 2017
    Publication date: January 9, 2020
    Inventors: Hanne Wikberg, Taina Ohra-Aho, Juha Leppävuori, Tiina Liitiä, Heimo Kanerva
  • Bio-based mineral oil barrier coatings and films
    Publication number: 20190001647
    Abstract: According to an example aspect of the present invention, there is provided bio-based mineral oil barrier coatings and films usable for decreasing mineral oil migration, for example in food packaging materials, and thus improving the safety of the materials facing the mineral oil containing environment.
    Type: Application
    Filed: February 3, 2017
    Publication date: January 3, 2019
    Inventors: Jari Vartiainen, Christiane Laine, Marja Pitkänen, Taina Ohra-Aho, Adina Anghelescu-Hakala
  • Method for activating and precipitating lignin
    Publication number: 20180179339
    Abstract: According to an example aspect of the present invention, there is provided a method of producing reactive lignin from an alkaline lignin containing stream, such as black liquor, e.g. kraft lignin, by using thermal treatment with temperatures between 200 and 250° C. for simultaneous activation (for example by demethylation and/or demethoxylation) and precipitation of the lignin.
    Type: Application
    Filed: June 23, 2016
    Publication date: June 28, 2018
    Inventors: Hanne Wikberg, Taina Ohra-Aho, Juha Leppävuori, Tiina Liitiä