Patents by Inventor Math JENNEKENS

Math JENNEKENS 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).

  • Supercritical CO2 cellulose spraydrying
    Patent number: 10669384
    Abstract: The present invention provides for a process for producing dry, water-dispersible, non-surface modified nanocellulose particles or a powderous composition r comprising said particles comprising the steps of: i. providing a first suspension of non-surface modified cellulose particles in an first aqueous liquid, which aqueous liquid is non-solubilizing for the non-surface modified nanocellulose particles, ii. exchanging substantially all of the first aqueous liquid of the first suspension for a second solvent, which is miscible with the first aqueous liquid and non-solubilizing for the non-surface modified nanocellulose particles, to form a second suspension of non-surface modified nanocellulose particles in said second solvent, iii.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: June 2, 2020
    Assignee: SAPPI Netherlands Services B.V.
    Inventors: Reyes Menendez Gonzalez, Daniela Oana Trambitas, Seda Cantekin, Ian Graveson, Math Jennekens, Saschi Momin
  • DRYING OF NANOCELLULOSE USING AMMONIA IN A SUPERCRITICAL STATE
    Publication number: 20190263975
    Abstract: A process for producing non-surface modified nanocellulose particles in the form of a powder, comprising the steps of i. providing a suspension of never-dried, non-surface modified nanocellulose particles in an aqueous liquid, which is non-solubilising for the non-surface modified nanocellulose particles, and which is water or an aqueous solution of morpholine or piperidine or mixtures thereof, ii. contacting the suspension of non-surface modified nanocellulose particles with a fluid in a supercritical state, which fluid is miscible with the aqueous liquid and is non-solubilising for the non-surface modified nanocellulose particles, under conditions suitable for the transfer of the aqueous liquid into the fluid in a supercritical state, iii. removing the aqueous liquid and the fluid in a supercritical state by controlling pressure and/or temperature, to form the non-surface modified nanocellulose particles, and iv.
    Type: Application
    Filed: November 7, 2017
    Publication date: August 29, 2019
    Applicant: SAPPI Netherlands Services B.V.
    Inventors: Math JENNEKENS, Daniela Oana TRAMBITAS, Tjerk Jan DE VRIES
  • SUPERCRITICAL CO2 CELLULOSE SPRAYDRYING
    Publication number: 20180282490
    Abstract: The present invention provides for a process for producing dry, water-dispersible, non-surface modified nanocellulose particles or a powderous composition r comprising said particles comprising the steps of: i. providing a first suspension of non-surface modified cellulose particles in an first aqueous liquid, which aqueous liquid is non-solubilizing for the non-surface modified nanocellulose particles, ii. exchanging substantially all of the first aqueous liquid of the first suspension for a second solvent, which is miscible with the first aqueous liquid and non-solubilizing for the non-surface modified nanocellulose particles, to form a second suspension of non-surface modified nanocellulose particles in said second solvent, iii.
    Type: Application
    Filed: September 26, 2016
    Publication date: October 4, 2018
    Applicant: SAPPI Netherlands Services B.V.
    Inventors: Reyes MENENDEZ GONZALEZ, Daniela Oana TRAMBITAS, Seda CANTEKIN, Ian GRAVESON, Math JENNEKENS, Saschi MOMIN