Patents by Inventor HIROKO ITAGAKI

HIROKO ITAGAKI 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).

  • SOLVENT FOR GAS CHROMATOGRAPY MASS SPECTOMETRY, AND METHOD FOR DETERMINATION OF FLUORINE-CONTAINING SUBSTANCES ON THE SURFACE OF FLUORORESIN MELT-MOLDED PRODUCTS
    Publication number: 20220146468
    Abstract: Provided is a fluorine-containing solvent for gas chromatography mass spectrometry of fluorine-containing substances found contaminating surfaces of fluororesin melt-molded products and detrimental to the use of such products for handling fluids in semiconductor manufacture. Also provided is a quantitative determination method for such fluorine-containing substances and a qualitative analysis method for such fluorine-containing substances based on a gas chromatography mass spectrometry method using the fluorine-containing solvent to enable the determination of the presence or absence of trace amounts of contaminant fluorine-containing substances existing as fine particles on surfaces of melt-molded fluororesin products.
    Type: Application
    Filed: March 4, 2020
    Publication date: May 12, 2022
    Applicant: CHEMOURS-MITSUI FLUOROPRODUCTS CO. LTD.
    Inventors: HIROMASA YABE, HIROKO ITAGAKI