Patents by Inventor Viridiane VIANNA

Viridiane VIANNA 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).

  • Method of feeding wood chips to a prehydrolysis reactor
    Patent number: 11993895
    Abstract: A method for feeding a slurry of chips and liquid to a prehydrolysis reactor in the production of dissolving pulp. The slurry is pumped by using at least one pump to the reactor, and alkali is fed into the at least one pump 5 for adjusting the pH of the slurry to a range of 7-10.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: May 28, 2024
    Assignee: ANDRITZ OY
    Inventors: Marco Andrade, Ronny Geiger, Vesa Kaipainen, Auvo Kettunen, Petri Tarjavuori, Viridiane Vianna
  • METHOD OF FEEDING WOOD CHIPS TO A PREHYDROLYSIS REACTOR
    Publication number: 20220002944
    Abstract: A method for feeding a slurry of chips and liquid to a prehydrolysis reactor in the production of dissolving pulp. The slurry is pumped by using at least one pump to the reactor, and alkali is fed into the at least one pump 5 for adjusting the pH of the slurry to a range of 7-10.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 6, 2022
    Inventors: Marco ANDRADE, Ronny GEIGER, Vesa KAIPAINEN, Auvo KETTUNEN, Petri TARJAVUORI, Viridiane VIANNA