Patents by Inventor Masakazu Tsukida

Masakazu Tsukida 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).

  • Process for producing organic acid ester-type liquid, and process for producing solvent of resist for producing electronic part or rinsing liquid for producing electronic parts
    Patent number: 10632456
    Abstract: A process for producing an organic acid ester-type liquid is disclosed which is a process for removing an organic peroxide contained in an organic acid ester-type liquid which is a solvent of a resist for producing electronic parts or an organic acid ester-type liquid which is a rinsing liquid for producing electronic parts, which comprises contacting the organic acid ester-type liquid with a platinum group metal catalyst to remove the organic peroxide in the organic acid ester-type liquid, and a resist solvent for producing electronic parts or a rinsing liquid for producing electronic parts which comprises an organic acid ester-type liquid in which an organic peroxide contained therein has been removed by using the producing process and a peroxide value (POV) thereof is 2 mmoL/kg or less.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: April 28, 2020
    Assignee: MUSASHINO CHEMICAL LABORATORY, LTD.
    Inventors: Masakazu Tsukida, Hitoshi Takada
  • PROCESS FOR PRODUCING ORGANIC ACID ESTER-TYPE LIQUID, AND PROCESS FOR PRODUCING SOLVENT OF RESIST FOR PRODUCING ELECTRONIC PART OR RINSING LIQUID FOR PRODUCING ELECTRONIC PARTS
    Publication number: 20190076833
    Abstract: A process for producing an organic acid ester-type liquid is disclosed which is a process for removing an organic peroxide contained in an organic acid ester-type liquid which is a solvent of a resist for producing electronic parts or an organic acid ester-type liquid which is a rinsing liquid for producing electronic parts, which comprises contacting the organic acid ester-type liquid with a platinum group metal catalyst to remove the organic peroxide in the organic acid ester-type liquid, and a resist solvent for producing electronic parts or a rinsing liquid for producing electronic parts which comprises an organic acid ester-type liquid in which an organic peroxide contained therein has been removed by using the producing process and a peroxide value (POV) thereof is 2 mmoL/kg or less.
    Type: Application
    Filed: June 28, 2016
    Publication date: March 14, 2019
    Applicant: MUSASHINO CHEMICAL LABORATORY, LTD.
    Inventors: Masakazu Tsukida, Hitoshi Takada