Patents by Inventor Satoshi Asano

Satoshi Asano 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: 20210296945
    Abstract: A communication control device comprises: an antenna; and a control unit that controls wireless communication related to wireless power transfer to a power receiver device through a power transmitter device. The control unit acquires via the antenna a radio wave status of each of a plurality of channels related to the wireless communication. The control unit acquires a power transmission status of the wireless power transfer. The control unit sets, based on the acquired power transmission status, switching conditions for switching the channel according to the radio wave status. The control unit causes the channel to be switched based on the radio wave status and the switching conditions. The control unit causes the wireless communication to continue on the switched channel.
    Type: Application
    Filed: June 14, 2019
    Publication date: September 23, 2021
    Applicant: IHI Corporation
    Inventors: Satoshi YAZAKI, Michisato MAEKAWA, Naoki OMURA, Yusuke OONO, Atsushi ASANO
  • Publication number: 20210292927
    Abstract: A method for refining bismuth is provided, which comprises recovering bismuth from a solution obtained after recovery of noble metals from a copper electrolytic slime. The method comprises: 1) a neutralization step of adding alkali to an acid solution to adjust the pH to the range of 2.0 or more and 3.
    Type: Application
    Filed: January 30, 2017
    Publication date: September 23, 2021
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroshi TAKENOUCHI, Nobuyuki KAJI, Toshihiko NAGAKURA, Kenji TAKEDA, Satoshi ASANO
  • Publication number: 20210039011
    Abstract: Provided is a solvent extraction method that allows selectively separating magnesium from an acidic aqueous solution of sulfuric acid. The solvent extraction method includes: bringing an acidic aqueous solution of sulfuric acid containing nickel, cobalt, and magnesium in contact with an organic solvent to extract the magnesium into the organic solvent; and using the organic solvent produced by diluting an extractant made of alkylphosphonic acid ester with a diluent. A concentration of the extractant is set to 40 volume % or more and 60 volume % or less and a pH of the acidic aqueous solution of sulfuric acid is set to 1.5 or more and 2.0 or less, or the concentration of the extractant is set to 20 volume % or more and 50 volume % or less and the pH of the acidic aqueous solution of sulfuric acid is set to 2.0 or more and 2.5 or less.
    Type: Application
    Filed: November 21, 2018
    Publication date: February 11, 2021
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hideki OHARA, Satoshi ASANO, Hiroshi KOBAYASHI, Masatoshi TAKANO, Shota SANJO
  • Publication number: 20200391177
    Abstract: A method for producing lithium manganese oxide that is a precursor of a lithium adsorbent under atmospheric pressure is provided. The method for producing a precursor of a lithium adsorbent comprises tire following steps (1) to (3): (1) A 1st mixing step of mixing a manganese salt and alkali hydroxide, so as to obtain a 1st slurry containing manganese hydroxide; (2) a 2nd mixing step of adding lithium hydroxide to the 1st slurry and then mixing the mixture to obtain a 2nd slurry; and (3) an oxidation step of adding an oxidizing agent to the 2nd slurry, so as to obtain a precursor of a lithium adsorbent. The method for producing a precursor of a lithium adsorbent comprises these steps, so that a precursor of a lithium adsorbent can be produced under atmospheric pressure. Therefore, a precursor of a lithium adsorbent can be produced at a limited cost.
    Type: Application
    Filed: April 17, 2019
    Publication date: December 17, 2020
    Applicants: SUMITOMO METAL MINING CO., LTD., THE UNIVERSITY OF KITAKYUSHU
    Inventors: Masatoshi TAKANO, Shin-ya MATSUMOTO, Osamu IKEDA, Yohei KUDO, Satoshi ASANO, Kazuharu YOSHIZUKA, Syouhei NISHIHAMA
  • Publication number: 20200277704
    Abstract: Provided is a treatment method whereby it becomes possible to recovery copper, nickel and cobalt, which are valuable metals, contained in a lithium ion battery waste and to separate copper, nickel and cobalt from one another effectively. A method for treating a lithium ion battery waste according to the present invention includes: an alloy production step S1 of introducing the lithium ion battery waste into a furnace and then melting the lithium ion battery waste by heating, thereby producing an alloy containing copper, nickel and cobalt; and an electrolytic purification step S2 of subjecting the alloy to such an electrolytic treatment that the alloy is charged as an anode into a sulfuric acid solution and then electricity is conducted between the anode and a cathode to electrodeposit copper contained in the alloy onto the cathode, thereby separating nickel and cobalt from each other.
    Type: Application
    Filed: October 22, 2018
    Publication date: September 3, 2020
    Inventors: Hiroshi Takenouchi, Satoshi Asano, Toshirou Tan, Hiroshi Kobayashi, Kenji Takeda
  • Publication number: 20200263276
    Abstract: A method for treating a lithium ion battery waste according to the present invention is a method for treating a lithium ion battery waste using a converter furnace in a copper smelting process, wherein, prior to a treatment for charging a copper mat produced in a flash smelter in a copper smelting process into a converter furnace and blowing oxygen into the converter furnace to produce crude copper, the lithium ion battery waste is introduced into the converter furnace or a ladle that is used for the charging of the copper mat into the converter furnace and then the lithium ion battery waste is burned with residual heat in the converter furnace or the ladle.
    Type: Application
    Filed: October 22, 2018
    Publication date: August 20, 2020
    Inventors: Kenji Takeda, Satoshi Asano
  • Publication number: 20200232066
    Abstract: Provided is a method for separating copper, nickel, and cobalt, the method being capable of efficiently and selectively separating copper, nickel, and cobalt from alloys containing copper, nickel, and cobalt, such as highly corrosive alloys containing copper, nickel, and cobalt obtained by dry-processing used lithium ion batteries. The alloy containing copper, nickel, and cobalt is brought into contact with nitric acid in the co-presence of a sulfiding agent to obtain a solid containing copper and a leachate containing nickel and cobalt.
    Type: Application
    Filed: September 11, 2018
    Publication date: July 23, 2020
    Inventors: Tatsuya Higaki, Hiroshi Takenouchi, Hiroshi Kobayashi, Satoshi Asano
  • Publication number: 20200216327
    Abstract: Provided is a method for separating copper from nickel and cobalt with which it is possible to selectively and efficiently separate copper, as well as nickel and cobalt, from an alloy including copper, nickel, and cobalt such as an alloy having high corrosion resistance that includes copper, nickel, and cobalt obtained by dry treatment of waste lithium ion cells. An alloy including copper, nickel, and cobalt is brought into contact with sulfuric acid in the joint presence of a sulfurizing agent, and a solid containing copper and a leachate containing nickel and cobalt are obtained.
    Type: Application
    Filed: September 11, 2018
    Publication date: July 9, 2020
    Inventors: Tatsuya Higaki, Hiroshi Takenouchi, Hiroshi Kobayashi, Satoshi Asano
  • Publication number: 20200216929
    Abstract: Provided is a method for separating copper from nickel and cobalt, which is capable of efficiently and selectively separating copper, and nickel and cobalt from an alloy containing copper, nickel and cobalt such as a highly anticorrosive alloy that is obtained by subjecting a waste lithium ion battery to a dry treatment and contains copper, nickel and cobalt. According to the present invention, an alloy containing copper, nickel and cobalt is brought into contact with an acid in the coexistence of a sulfurization agent, thereby obtaining a solid that contains copper and a leachate that contains nickel and cobalt.
    Type: Application
    Filed: August 21, 2018
    Publication date: July 9, 2020
    Inventors: Tatsuya Higaki, Hiroshi Takenouchi, Hiroshi Kobayashi, Satoshi Asano
  • Patent number: 10615076
    Abstract: A semiconductor chip having a pad, a protective element, and an internal circuit for providing a semiconductor chip having a protective circuit with high noise resistance, wherein the semiconductor chip is characterized in that the resistance value of metal wiring on a path reaching the pad and the protective element is higher than the resistance value of the protective element.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 7, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yoshimitsu Yanagawa, Masahiro Matsumoto, Hiroshi Nakano, Akira Kotabe, Satoshi Asano
  • Patent number: 10591332
    Abstract: Provided is an airflow meter with good precision. In the airflow meter, which is provided with an arithmetic circuit that incorporates air temperature and a sensor module temperature as adjustment elements for the output characteristics of the airflow meter, corrects the output characteristics in accordance with the temperature difference between the air temperature and the sensor module temperature and reduces the correction amount when the absolute value of the difference between the air temperature and the sensor module temperature is small.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: March 17, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryo Sato, Masahiro Matsumoto, Satoshi Asano, Akira Kotabe, Kazunori Suzuki
  • Patent number: 10577255
    Abstract: Provided is a method for producing solutions, by which two solutions, namely a high-purity nickel sulfate solution and a mixed solution of nickel sulfate and cobalt sulfate are able to be obtained at the same time from a sulfuric acid solution containing nickel, cobalt and calcium. A method for producing solutions according to the present invention uses a sulfuric acid solution containing nickel, cobalt and calcium and performs a first step S1 for producing a mixed solution of nickel sulfate and cobalt sulfate from the sulfuric acid solution and a second step S2 for producing a solution of nickel sulfate from the sulfuric acid solution in parallel. In the first step, the sulfuric acid solution is subjected to solvent extraction by an extractant, thereby obtaining a first organic solvent after extraction. In the second step, the sulfuric acid solution is subjected to solvent extraction by means of an extractant.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: March 3, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hideki Ohara, Toshirou Tan, Masatoshi Takano, Satoshi Asano, Hiroshi Kobayashi
  • Patent number: 10570480
    Abstract: The invention provides a method for recovering scandium from an acidic solution containing scandium. The method having [a] a precipitation step wherein sodium sulfate is added into the acidic solution containing scandium to obtain a precipitate of a scandium double sulfate; [b] a neutralization step wherein pure water is added to the precipitate of a scandium double sulfate to dissolve the precipitate of a scandium double sulfate therein, and scandium hydroxide is obtained by adding a neutralizing agent into the dissolution liquid; and [c] a re-dissolution step wherein an acid is added to the scandium hydroxide obtained in the neutralization step, so that a scandium dissolution after purification, in which the scandium hydroxide is dissolved, is obtained.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: February 25, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hidemasa Nagai, Keiji Kudo, Shin-ya Matsumoto, Hiroshi Kobayashi, Satoshi Asano
  • Patent number: 10508942
    Abstract: In configurations in which a circuit element is connected in parallel with a resistor, it is difficult to detect a break in the two wires. A thermal flow meter includes a heating element and a temperature controlling bridge circuit that is formed of a plurality of resistors and controls the temperature of the heating element. The thermal flow meter includes: a circuit element connected in parallel with at least one resistor configuring the temperature controlling bridge circuit through two wires drawn from both ends of the resistor; a voltage detection circuit that detects that the magnitude of voltage produced between the two wires has become smaller than a first predetermined value; and a fault signal output circuit that, when it is detected at the voltage detection circuit that the. magnitude of the voltage has become smaller than the first predetermined value, outputs a signal indicating a fault.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: December 17, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masahiro Matsumoto, Hiroshi Nakano, Keiji Hanzawa, Satoshi Asano
  • Patent number: 10501334
    Abstract: An aqueous cobalt chloride solution refinement method, in which metallic nickel is washed with an acidic liquid having a pH of not more than 2.5 before the metallic nickel is brought into contact with the aqueous solution containing cobalt chloride. Since the metallic nickel is washed with the acidic liquid having a pH of not more than 2.5, a passive film on a surface of the metallic nickel is removed and therefore, when the metallic nickel comes in contact with the aqueous solution containing cobalt chloride, an impurity more noble than the metallic nickel can be precipitated by a cementation reaction. In addition, since the metallic nickel is only washed with acid to be brought into contact with the aqueous solution containing cobalt chloride, impurities can be easily removed from the aqueous solution containing cobalt chloride.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 10, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hideki Ohara, Satoshi Asano, Toshirou Tan, Masatoshi Takano
  • Patent number: 10444031
    Abstract: Provided is a sensor device wherein malfunction due to a negative surge is suppressed. This sensor device is provided with: a sensor element wherein electrical characteristics change corresponding to physical quantities; a signal processing circuit that processes output signals of the sensor element; a first transistor element that supplies currents to the sensor element and the signal processing circuit; a control circuit that controls a base current of the first transistor element; a power supply terminal; and a ground terminal. The sensor device is characterized in that the control circuit is provided with a limiting section that limits a current flowing from the ground terminal toward a base terminal of the first transistor element.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: October 15, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshimitsu Yanagawa, Masahiro Matsumoto, Satoshi Asano, Hiroshi Nakano, Akira Kotabe
  • Publication number: 20190194031
    Abstract: Provided is a method for producing solutions, by which two solutions, namely a high-purity nickel sulfate solution and a mixed solution of nickel sulfate and cobalt sulfate are able to be obtained at the same time from a sulfuric acid solution containing nickel, cobalt and calcium. A method for producing solutions according to the present invention uses a sulfuric acid solution containing nickel, cobalt and calcium and performs a first step S1 for producing a mixed solution of nickel sulfate and cobalt sulfate from the sulfuric acid solution and a second step S2 for producing a solution of nickel sulfate from the sulfuric acid solution in parallel. In the first step, the sulfuric acid solution is subjected to solvent extraction by an extractant, thereby obtaining a first organic solvent after extraction In the second step, the sulfuric acid solution is subjected to solvent extraction by means of an extractant.
    Type: Application
    Filed: September 1, 2017
    Publication date: June 27, 2019
    Inventors: Hideki Ohara, Toshirou Tan, Masatoshi Takano, Satoshi Asano, Hiroshi Kobayashi
  • Publication number: 20190185964
    Abstract: Provided is a method for efficiently purifying scandium by separating scandium and impurities from an acidic solution which contains scandium and impurities that include iron. A method for purifying scandium according to the present invention subjects an acidic solution, which contains an element component including at least ion, while containing scandium, to solvent extraction by means of a mixed extractant containing a phosphoric acid-based extractant and a neutral extractant, thereby extracting scandium from the acidic solution. It is preferable that the phosphoric acid-based extractant is contained in the mixed extractant at a mixing molar ratio within the range of from 5% to 50% (inclusive). It is also preferable that the pH of the acidic solution is adjusted to a value within the range of from 0.0 to 2.0 (inclusive) before the solvent extraction.
    Type: Application
    Filed: August 21, 2017
    Publication date: June 20, 2019
    Inventors: Masahiro Goto, Fukiko Kubota, Itsumi Matsuoka, Satoshi Asano, Hiroshi Kobayashi
  • Patent number: 10239764
    Abstract: An aqueous cobalt chloride solution purification method, in which impurities can be efficiently removed from a cobalt salt solution, includes bringing metallic nickel into contact with an aqueous solution containing cobalt chloride to remove an impurity by a substitution reaction, in which the pH of the aqueous solution containing cobalt chloride is adjusted to not less than 1.5 and not more than 2.5. Since the pH of the aqueous solution containing cobalt chloride is adjusted to not less than 1.5 and not more than 2.5, a passive film on a surface of the metallic nickel can be effectively removed, and the metallic nickel comes in contact with the aqueous solution containing cobalt chloride, so that an impurity more noble than the metallic nickel can be precipitated by the substitution reaction. The metallic nickel is only brought into contact with the aqueous solution containing cobalt chloride, and the impurity can be easily removed.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 26, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Toshirou Tan, Masatoshi Takano, Hideki Ohara, Satoshi Asano
  • Patent number: 10227675
    Abstract: A wet smelting method for nickel oxide ores from which nickel, cobalt, etc. are recovered is provided with which it is possible to reduce the consumption of an acid in leaching, such as sulfuric acid, and to recover valuable metals. The method comprises: step (A) in which nickel oxide ores as a raw material are separated into a limonite-type ore having a low magnesium content and a saprolite-type ore having a high magnesium content; step (B) in which the saprolite-type ore is subjected to normal-pressure leaching under given standardized leaching conditions using the pressure leachate obtained by pressure leaching in step (C); and step (C) in which the limonite-type ore obtained in step (A) is mixed with the normal-pressure leaching residue obtained in step (B) and the mixture is reacted with sulfuric acid in an acidic atmosphere having a high temperature and a high pressure, thereby conducting pressure leaching.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: March 12, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi Shouji, Keiji Kudo, Yoshitomo Ozaki, Hiroshi Kobayashi, Satoshi Asano