Patents by Inventor Yuji MASAMOTO

Yuji MASAMOTO 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).

  • Etching liquid composition and etching method
    Patent number: 10280518
    Abstract: The present invention provides an etching liquid composition consisting of an aqueous solution that contains (A) 0.1 to 30 mass % of at least one type of oxidizing agent selected from among ferric ions and cupric ions; (B) 0.1 to 20 mass % of hydrogen chloride, and an etching method using it.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: May 7, 2019
    Assignee: ADEKA CORPORATION
    Inventors: Yuji Masamoto, Yoshihide Saio, Tamami Aoki
  • ETCHING LIQUID COMPOSITION AND ETCHING METHOD
    Publication number: 20180298501
    Abstract: The present invention provides an etching liquid composition consisting of an aqueous solution that contains (A) 0.1 to 30 mass % of at least one type of oxidizing agent selected from among ferric ions and cupric ions; (B) 0.1 to 20 mass % of hydrogen chloride, and an etching method using it.
    Type: Application
    Filed: August 22, 2016
    Publication date: October 18, 2018
    Applicant: ADEKA CORPORATION
    Inventors: Yuji MASAMOTO, Yoshihide SAIO, Tamami AOKI