Patents by Inventor Takuma Katase

Takuma Katase 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).

  • Publication number: 20190390357
    Abstract: A tin alloy plating solution comprising a soluble tin salt, a soluble salt of a metal nobler than tin, and a sulfide compound represented by general formula (I). In formula (I), n is 1 to 3. The metal nobler than tin is preferably silver, copper, gold, or bismuth.
    Type: Application
    Filed: December 13, 2017
    Publication date: December 26, 2019
    Inventors: Kouji Tatsumi, Tsukasa Yasoshima, Takuma Katase
  • Publication number: 20190338433
    Abstract: The SnAg alloy plating solution of the invention is a SnAg alloy plating solution including a water-soluble tin compound, a water-soluble silver compound, and a particular sulfide compound in an amount in the range of 0.25 mol or more and 10 mol or less with respect to 1 mol of silver in the water-soluble silver compound.
    Type: Application
    Filed: December 21, 2016
    Publication date: November 7, 2019
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Koji Tatsumi, Tsukasa Yasoshima, Takuma Katase
  • Patent number: 10392262
    Abstract: A stannous oxide powder which has a high dissolution rate into various acid solutions such as a plating solution and is particularly suitable as a Sn supply material to a plating solution, and a method for producing the stannous oxide powder are provided. The stannous oxide powder is a particle body having a plurality of plate-like protrusions protruding outward, and has an average particle size in a range of 1 ?m to 15 ?m.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Hirotaka Hirano, Takuma Katase
  • Patent number: 10351438
    Abstract: A stannous oxide powder which has a high dissolution rate into various acid solutions such as a plating solution and is particularly suitable as a Sn supply material to a plating solution, and a method for producing the stannous oxide powder are provided. The stannous oxide powder is a particle body having a plurality of plate-like protrusions protruding outward, and has an average particle size in a range of 1 ?m to 15 ?m.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: July 16, 2019
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Hirotaka Hirano, Takuma Katase
  • Patent number: 10184046
    Abstract: The method of producing stannous oxide includes: a Sn ion-containing acid solution forming step (S01); a first neutralizing step (S02), which is a step of forming Sn precipitates by adding one or more of alkaline solutions of ammonium carbonate, ammonium bicarbonate, and aqueous ammonia to the Sn ion-containing acid solution to retain pH at 3-6 therein; a Sn precipitate separating step (S03); a Sn precipitate dispersing step (S04), which is a step of dispersing the separated Sn precipitates in a solvent liquid to obtain a dispersion liquid; and a second neutralizing step (S06), which is a step of forming SnO by adding an alkaline solution to the dispersion liquid of the Sn precipitates and then by heating, wherein Na, K, Pb, Fe, Ni, Cu, Zn, Al, Mg, Ca, Cr, Mn, Co, In, and Cd reside in the Sn ion-containing acid solution in the first neutralizing step (S02).
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: January 22, 2019
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takuma Katase, Hirotaka Hirano
  • Publication number: 20180327274
    Abstract: A stannous oxide powder which has a high dissolution rate into various acid solutions such as a plating solution and is particularly suitable as a Sn supply material to a plating solution, and a method for producing the stannous oxide powder are provided. The stannous oxide powder is a particle body having a plurality of plate-like protrusions protruding outward, and has an average particle size in a range of 1 ?m to 15 ?m.
    Type: Application
    Filed: February 12, 2016
    Publication date: November 15, 2018
    Inventors: Hirotaka Hirano, Takuma Katase
  • Publication number: 20170009078
    Abstract: The method of producing stannous oxide includes: a Sn ion-containing acid solution forming step (S01); a first neutralizing step (S02), which is a step of forming Sn precipitates by adding one or more of alkaline solutions of ammonium carbonate, ammonium bicarbonate, and aqueous ammonia to the Sn ion-containing acid solution to retain pH at 3-6 therein; a Sn precipitate separating step (S03); a Sn precipitate dispersing step (S04), which is a step of dispersing the separated Sn precipitates in a solvent liquid to obtain a dispersion liquid; and a second neutralizing step (S06), which is a step of forming SnO by adding an alkaline solution to the dispersion liquid of the Sn precipitates and then by heating, wherein Na, K, Pb, Fe, Ni, Cu, Zn, Al, Mg, Ca, Cr, Mn, Co, In, and Cd reside in the Sn ion-containing acid solution in the first neutralizing step (S02).
    Type: Application
    Filed: March 2, 2015
    Publication date: January 12, 2017
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takuma Katase, Hirotaka Hirano
  • Patent number: 9108861
    Abstract: An object and a problem of the present invention is to provide tin(II) oxide powder which has extremely high solubility in an acid or an acidic plating solution and excellent in storage stability in the air. The tin(II) oxide powder of the present invention is for replenishing a tin component of a tin-alloy plating solution, and comprises 100 to 5000 ppm of an antioxidant being contained in the powder with a mass ratio, and has such a dissolution rate that when 0.1 g of the tin(II) oxide powder is added to 100 ml of 100 g/L aqueous alkylsulfonic acid solution at a temperature of 25° C. and stirred, then the powder dissolves therein within 180 seconds.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: August 18, 2015
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takuma Katase, Akihiro Masuda, Kanji Kuba
  • Patent number: 9067800
    Abstract: An object of the present invention is to provide tin(II) oxide powder which has extremely high solubility in an acid or an acidic plating solution, excellent in storage stability in the air and can heighten oxidation-preventive effect of Sn2+ ion in the plating solution. The method for manufacturing tin(II) oxide powder of the present invention comprises Step (11) of preparing an aqueous acidic solution containing Sn2+ ions, Step (12) of neutralizing the aqueous acidic solution by adding an aqueous alkaline solution to prepare a slurry of tin(II) hydroxide, Step (13) of dehydrating the prepared slurry to obtain a slurry of tin(II) oxide, Step (14) of separating the slurry of tin(II) oxide into a solid and a liquid to obtain tin(II) oxide, Step (15) of treating the obtained tin(II) oxide with an aqueous antioxidant solution, and Step (16) of vacuum drying the tin(II) oxide treated with the aqueous antioxidant solution.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: June 30, 2015
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takuma Katase, Akihiro Masuda, Kanji Kuba
  • Publication number: 20140127109
    Abstract: An object and a problem of the present invention is to provide tin (II) oxide powder which has extremely high solubility in an acid or an acidic plating solution and excellent in storage stability in the air. The tin (II) oxide powder of the present invention is for replenishing a tin component of a tin-alloy plating solution, and comprises 100 to 5000 ppm of an antioxidant being contained in the powder with a mass ratio, and has such a dissolution rate that when 0.1 g of the tin (II) oxide powder is added to 100 ml of 100 g/L aqueous alkylsulfonic acid solution at a temperature of 25° C. and stirred, then the powder dissolves therein within 180 seconds.
    Type: Application
    Filed: May 8, 2012
    Publication date: May 8, 2014
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takuma Katase, Akihiro Masuda, Kanji Kuba
  • Publication number: 20140079618
    Abstract: An object of the present invention is to provide tin(II) oxide powder which has extremely high solubility in an acid or an acidic plating solution, excellent in storage stability in the air and can heighten oxidation-preventive effect of Sn2+ ion in the plating solution. The method for manufacturing tin(II) oxide powder of the present invention comprises Step (11) of preparing an aqueous acidic solution containing Sn2+ ions, Step (12) of neutralizing the aqueous acidic solution by adding an aqueous alkaline solution to prepare a slurry of tin(II) hydroxide, Step (13) of dehydrating the prepared slurry to obtain a slurry of tin(II) oxide, Step (14) of separating the slurry of tin(II) oxide into a solid and a liquid to obtain tin(II) oxide, Step (15) of treating the obtained tin(II) oxide with an aqueous antioxidant solution, and Step (16) of vacuum drying the tin(II) oxide treated with the aqueous antioxidant solution.
    Type: Application
    Filed: May 8, 2012
    Publication date: March 20, 2014
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takuma Katase, Akihiro Masuda, Kanji Kuba