Patents by Inventor Mirjam E. Oldenzeel

Mirjam E. Oldenzeel 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: 8415417
    Abstract: The invention relates to a non-fibrous polymer solution essentially consisting of 1 to 8 wt. % para-aramid, at least 50 mole % of the aromatic moieties thereof being unsubstituted, in a mixture of a) a polar amide solvent selected from N-methyl-2-pyrrolidone, N,N?-dimethylformamide, N,N?-dimethylacetamide, tetramethylurea, and mixtures thereof; b) between 0.7 mole of an alkali or earth alkali chloride per mole amide groups of the para-aramid and 7.5 wt. % of the alkali or earth alkali chloride, and c) water; and wherein at least 50 wt. % of the formed hydrochloric acid has been neutralized to obtain a solution having a dynamic viscosity which is at least a factor three smaller than the dynamic viscosity of the polymer solution without neutralization. The invention further pertains to a process making the same and para-aramid pulp-like fiber, paper and film made from said polymer solution.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: April 9, 2013
    Assignee: Teijin Aramid B.V.
    Inventors: Anton J. J. Hendriks, Jan M. Surquin, Mirjam E. Oldenzeel, Rene Journee, Vincent A. Van Bommel
  • Publication number: 20100234496
    Abstract: The invention relates to a non-fibrous polymer solution essentially consisting of 1 to 8 wt. % para-aramid, at least 50 mole % of the aromatic moieties thereof being unsubstituted, in a mixture of a) a polar amide solvent selected from N-methyl-2-pyrrolidone, N,N?-dimethyl-formamide, N,N?-dimethylacetamide, tetramethylurea, and mixtures thereof; b) between 0.7 mole of an alkali or earth alkali chloride per mole amide groups of the para-aramid and 7.5 wt. % of the alkali or earth alkali chloride, and c) water; and wherein at least 50 wt. % of the formed hydrochloric acid has been neutralized to obtain a solution having a dynamic viscosity which is at least a factor three smaller than the dynamic viscosity of the polymer solution without neutralization. The invention further pertains to a process making the same and para-aramid pulp-like fiber, paper and film made from said polymer solution.
    Type: Application
    Filed: May 28, 2010
    Publication date: September 16, 2010
    Applicant: TEIJIN ARAMID B.V.
    Inventors: Anton J.J. Hendriks, Jan M. Surquin, Mirjam E. Oldenzeel, René Journee, Vincent A. Van Bommel
  • Patent number: 7754797
    Abstract: The invention relates to a non-fibrous polymer solution essentially consisting of 1 to 8 wt. % para-aramid, at least 50 mole % of the aromatic moieties thereof being unsubstituted, in a mixture of a) a polar amide solvent selected from N-methyl-2-pyrrolidone, N,N?-dimethyl-formamide, N,N?-dimethylacetamide, tetramethylurea, and mixtures thereof; b) between 0.7 mole of an alkali or alkaline earth metal chloride per mole amide groups of the para-aramid and 7.5 wt. % of the alkali or alkaline earth metal chloride, and c) water; and wherein at least 50 wt. % of the formed hydrochloric acid has been neutralized to obtain a solution having a dynamic viscosity which is at least a factor three smaller than the dynamic viscosity of the polymer solution without neutralization. The invention further pertains to a process making the same and para-aramid pulp-like fiber, paper and film made from said polymer solution.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: July 13, 2010
    Assignee: Teijin Aramid B.V.
    Inventors: Anton J. J. Hendriks, Jan M. Surquin, Mirjam E. Oldenzeel, René Journee, Vincent A. Van Bommel