Patents by Inventor Jonathan Samuel Tschritter

Jonathan Samuel Tschritter 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 for rapidly determining sulfur content in a plurality of samples
    Patent number: 10458964
    Abstract: Methods for measuring the sulfur content in a plurality of individual sulfur-containing fiber or article samples, comprising: a) contacting a plurality of samples with a solution comprising potassium hydroxide to convert the sulfur to potassium sulfate; b) concurrently and individually combusting the plurality of samples from step a) in a furnace at a temperature of greater than 650° C. to remove essentially all organic materials to produce a plurality of residues; c) dissolving each of the pluralities of residue in concentrated nitric acid to form individual residue solutions; and d) analyzing the individual residue solutions with Inductively Coupled Plasma (ICP) Emission Spectrometry to determine the sulfur content of each sample.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 29, 2019
    Assignee: DUPONT SAFETY & CONSTRUCTION INC.
    Inventor: Jonathan Samuel Tschritter
  • METHOD FOR RAPIDLY DETERMINING SULFUR CONTENT IN A PLURALITY OF SAMPLES
    Publication number: 20190101514
    Abstract: Methods for measuring the sulfur content in a plurality of individual sulfur-containing fiber or article samples, comprising: a) contacting a plurality of samples with a solution comprising potassium hydroxide to convert the sulfur to potassium sulfate; b) concurrently and individually combusting the plurality of samples from step a) in a furnace at a temperature of greater than 650° C. to remove essentially all organic materials to produce a plurality of residues; c) dissolving each of the pluralities of residue in concentrated nitric acid to form individual residue solutions; and d) analyzing the individual residue solutions with Inductively Coupled Plasma (ICP) Emission Spectrometry to determine the sulfur content of each sample.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventor: JONATHAN SAMUEL TSCHRITTER
  • Method for determining sulfur content in fibers
    Patent number: 9086382
    Abstract: The invention concerns methods for measuring sulfur content in a fiber or polymer resin sample comprising: a) contacting the sample with a solution comprising sodium hydroxide to convert sulfur to sodium sulfate, b) combusting the sample of step a) in a furnace to remove essentially all organic materials to produce a residue; c) dissolving the residue in concentrated nitric acid; and d) determining the sulfur content of the sample using ICP Emission Spectrometry.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: July 21, 2015
    Assignee: E I DUPONT DE NEMOURS AND COMPANY
    Inventor: Jonathan Samuel Tschritter
  • METHOD FOR DETERMINING SULFUR CONTENT IN FIBERS
    Publication number: 20150029506
    Abstract: The invention concerns methods for measuring sulfur content in a fiber or polymer resin sample comprising: a) contacting the sample with a solution comprising sodium hydroxide to convert sulfur to sodium sulfate, b) combusting the sample of step a) in a furnace to remove essentially all organic materials to produce a residue; c) dissolving the residue in concentrated nitric acid; and d) determining the sulfur content of the sample using ICP Emission Spectrometry.
    Type: Application
    Filed: January 11, 2012
    Publication date: January 29, 2015
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Jonathan Samuel Tschritter