Patents by Inventor Ivan Ryzhii

Ivan Ryzhii 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).

  • Metal residue removing liquid, metal residue removing method, and metal wiring manufacturing method
    Patent number: 12655370
    Abstract: A metal residue removing liquid including a mixed solvent containing a first organic solvent and a second organic solvent, a salt of a base containing no metal ions and hydrofluoric acid, and water, in which the first organic solvent is diethylformamide, and the mixed solvent has a value of 0.6 or more, which is obtained by subtracting a hydrogen bond term of a Hansen solubility parameter from a polar term of the Hansen solubility parameter.
    Type: Grant
    Filed: September 1, 2023
    Date of Patent: June 16, 2026
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Ivan Ryzhii, Mai Sugawara, Yugeng Wu
  • METAL RESIDUE REMOVING LIQUID, METAL RESIDUE REMOVING METHOD, AND METAL WIRING MANUFACTURING METHOD
    Publication number: 20240117280
    Abstract: A metal residue removing liquid including a mixed solvent containing a first organic solvent and a second organic solvent, a salt of a base containing no metal ions and hydrofluoric acid, and water, in which the first organic solvent is diethylformamide, and the mixed solvent has a value of 0.6 or more, which is obtained by subtracting a hydrogen bond term of a Hansen solubility parameter from a polar term of the Hansen solubility parameter.
    Type: Application
    Filed: September 1, 2023
    Publication date: April 11, 2024
    Inventors: Ivan Ryzhii, Mai Sugawara, Yugeng Wu