Patents by Inventor Sylvia Nefkens

Sylvia Nefkens 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: 11905494
    Abstract: A fabric detergent formulation is provided. The formulation comprises a preservative system that includes one or more sorbates in an amount of from about 0.01 wt. % to about 0.8 wt. % of the fabric detergent formulation; one or more anionic surfactants, wherein the weight ratio of the anionic surfactants to the sorbates is about 10 or more; and a solvent system that includes water in an amount of from about 50 wt. % to 100 wt. % of the fabric detergent formulation. The pH of the fabric detergent formulation is about 6.5 or more.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: February 20, 2024
    Assignee: Celanese International Corporation
    Inventors: Sylvia Nefkens, Aukje van Kooij
  • Publication number: 20230118462
    Abstract: A process for making sorbic acid from renewable materials is provided. The process comprises converting acetic acid to ketene; converting acetaldehyde to crotonaldehyde; reacting the ketene with the crotonaldehyde to produce a polyester; and converting the polyester to sorbic acid. Renewable materials are incorporated by one of the following methods: a) the acetic acid is produced by reacting methanol derived from renewable organic material with carbon monoxide, b) the acetic acid is a biobased acetic acid, c) the crotonaldehyde is a biobased crotonaldehyde, d) the crotonaldehyde is produced by converting a biobased acetaldehyde to crotonaldehyde, e) the crotonaldehyde is produced by converting acetaldehyde to crotonaldehyde and the acetaldehyde is produced from bioethylene, or any combination of a), b), c), d) and e).
    Type: Application
    Filed: October 4, 2022
    Publication date: April 20, 2023
    Inventors: Aujke van Kooij, Sylvia Nefkens, Brigitte Beringer-Molenaar
  • Publication number: 20210246398
    Abstract: A fabric detergent formulation is provided. The formulation comprises a preservative system that includes one or more sorbates in an amount of from about 0.01 wt. % to about 0.8 wt. % of the fabric detergent formulation; one or more anionic surfactants, wherein the weight ratio of the anionic surfactants to the sorbates is about 10 or more; and a solvent system that includes water in an amount of from about 50 wt. % to 100 wt. % of the fabric detergent formulation. The pH of the fabric detergent formulation is about 6.5 or more.
    Type: Application
    Filed: February 3, 2021
    Publication date: August 12, 2021
    Inventors: Sylvia Nefkens, Aukje van Kooij