Patents by Inventor Keita Nakahara

Keita Nakahara 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).

  • Patent number: 11958725
    Abstract: A guide display unit for a crane, wherein a data processing unit: calculates a measurement area corresponding to the measurement area of a camera; the measurement area from the viewpoint of the camera and generates a first image; performs mosaic-processing on the image captured by the camera according to the particle size of the three-dimensional map and generates a second image; performs registration processing on the first image and the second image and calculates the amount of deviation between the first image and the second image; corrects the position of a guide frame figure with respect to the image of a suspended load and a feature on the basis of the calculated amount of deviation; and overlays the guide frame figure on the images of the suspended load and the feature and displays the result on the data display unit.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: April 16, 2024
    Assignees: TADANO LTD., THE SCHOOL CORPORATION KANSAI UNIVERSITY
    Inventors: Iwao Ishikawa, Takayuki Kosaka, Keita Mashima, Satoshi Kubota, Shigenori Tanaka, Masaya Nakahara, Koki Nakahata
  • Patent number: 11757130
    Abstract: An additive for a non-aqueous electrolyte solution that can exhibit high-temperature cycle properties at 50° C. or more and low-temperature output properties at ?20° C. or less in a well-balanced manner for a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by formula [1], wherein Z1, Z2, Z3, Z4, Mp+ and p are as defined in the specification.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: September 12, 2023
    Assignee: CENTRAL GLASS CO., LTD.
    Inventors: Takayoshi Morinaka, Susumu Iwasaki, Keita Nakahara, Makoto Kubo, Mikihiro Takahashi
  • Patent number: 11545697
    Abstract: An additive for a non-aqueous electrolyte solution that can suppress the initial gas generation amount when used in a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by any one of formulae [1] to [4]: wherein R1, R2, R3, R4, X1, X2 and Y are as defined in the specification.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: January 3, 2023
    Assignee: CENTRAL GLASS CO., LTD.
    Inventors: Takayoshi Morinaka, Keita Nakahara, Susumu Iwasaki, Wataru Kawabata, Mikihiro Takahashi
  • Publication number: 20220384847
    Abstract: There is provided a method for producing lithium difluorophosphate in which difluorophosphate ester reacts with a lithium salt compound in a nonaqueous organic solvent without using water as a raw material, a method for producing a difluoro phosphate ester including a step of allowing a dihalophosphate ester to react with a fluorinating agent having a concentration of contained hydrogen fluoride of 15 mol % or less in a nonaqueous organic solvent; lithium difluorophosphate in which a value of a relational expression (d90-d10)/MV represented by d90 which is a particle size at which a volume cumulative distribution is 90%, d10 which is a particle size at which a volume cumulative distribution is 10%, and MV which is a volume average particle size is 10 or less; and methods for producing a nonaqueous electrolytic solution and a nonaqueous secondary battery using the production method described above.
    Type: Application
    Filed: August 6, 2020
    Publication date: December 1, 2022
    Inventors: Mikihiro TAKAHASHI, Masutaka SHINMEN, Takayoshi MORINAKA, Masataka FUJIMOTO, Susumu IWASAKI, Keita NAKAHARA, Masahiro MIURA, Shunsuke MIMURA, Katsuya KUBO
  • Publication number: 20220278371
    Abstract: The present invention provides a nonaqueous electrolyte battery which has a low internal resistance after the initial charge and discharge, while having excellent low-temperature output characteristics after storage at high temperatures. The present invention contains a compound represented by general formula (1) as a component of a nonaqueous electrolyte solution. In the formula, X1 represents a carbon atom or a sulfur atom; each of Y1 and Y2 represents an oxygen atom or a methylene group that may be substituted by a halogen atom; r represents 1 or 2; and R1 represents a group represented by general formula (2) or a group represented by general formula (3), provided that (i) in cases where X1 is a sulfur atom and Y1 and Y2 are methylene groups and (ii) in cases where X1 is a carbon atom and Y1 and Y2 are oxygen atoms, R1 is a group represented by general formula (2).
    Type: Application
    Filed: July 8, 2020
    Publication date: September 1, 2022
    Applicant: CENTRAL GLASS CO., LTD.
    Inventors: Wataru KAWABATA, Mikihiro TAKAHASHI, Takayoshi MORINAKA, Keita NAKAHARA, Takahiro TANIGAWA
  • Publication number: 20200313236
    Abstract: An additive for a non-aqueous electrolyte solution that can suppress the initial gas generation amount when used in a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by any one of formulae [1] to [4]: wherein R1, R2, R3, R4, X1, X2 and Y are as defined in the specification.
    Type: Application
    Filed: September 12, 2018
    Publication date: October 1, 2020
    Applicant: CENTRAL GLASS CO., LTD.
    Inventors: Takayoshi MORINAKA, Keita NAKAHARA, Susumu IWASAKI, Wataru KAWABATA, Mikihiro TAKAHASHI
  • Publication number: 20200287241
    Abstract: An additive for a non-aqueous electrolyte solution that can exhibit high-temperature cycle properties at 50° C. or more and low-temperature output properties at ?20° C. or less in a well-balanced manner for a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by formula [1], wherein Z1, Z2, Z3, Z4, Mp+ and p are as defined in the specification.
    Type: Application
    Filed: September 12, 2018
    Publication date: September 10, 2020
    Applicant: CENTRAL GLASS CO., LTD.
    Inventors: Takayoshi MORINAKA, Susumu IWASAKI, Keita NAKAHARA, Makoto KUBO, Mikihiro TAKAHASHI
  • Patent number: 10329155
    Abstract: To provide a manufacturing method with which lithium difluorophosphate powder can be recovered from a lithium difluorophosphate solution. A method for manufacturing lithium difluorophosphate powder is used which includes the steps of precipitating solid lithium difluorophosphate by adding a poor solvent to a solution in which lithium difluorophosphate is dissolved in a main solvent, and obtaining lithium difluorophosphate powder by solid-liquid separation of the solid lithium difluorophosphate from the liquid containing the main solvent and the poor solvent, wherein the relational expression between the octanol/water partition coefficient PP of the main solvent and the octanol/water partition coefficient PA of the poor solvent is defined by the following formula (1). PA??4/3×PP+1.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: June 25, 2019
    Assignee: Central Glass Company, Limited
    Inventors: Keita Nakahara, Takayoshi Morinaka, Yuta Ikeda, Natsuya Nishimura
  • Publication number: 20170334723
    Abstract: To provide a manufacturing method with which lithium difluorophosphate powder can be recovered from a lithium difluorophosphate solution. A method for manufacturing lithium difluorophosphate powder is used which includes the steps of precipitating solid lithium difluorophosphate by adding a poor solvent to a solution in which lithium difluorophosphate is dissolved in a main solvent, and obtaining lithium difluorophosphate powder by solid-liquid separation of the solid lithium difluorophosphate from the liquid containing the main solvent and the poor solvent, wherein the relational expression between the octanol/water partition coefficient PP of the main solvent and the octanol/water partition coefficient PA of the poor solvent is defined by the following formula (1). (1): PA??4/3×PP+1.
    Type: Application
    Filed: November 17, 2015
    Publication date: November 23, 2017
    Inventors: Keita NAKAHARA, Takayoshi MORINAKA, Yuta IKEDA, Natsuya NISHIMURA
  • Patent number: 9139918
    Abstract: A fluorine gas generating apparatus includes: a first main passage connected to a first gas chamber and supplying a fluorine gas to an external device; a first conveying device leading out and conveying the fluorine gas from the first gas chamber; a first pressure detector detecting the pressure on the upstream side of the first conveying device; a first pressure regulating valve returning the fluorine gas from the first conveying device to the suction side of the first conveying device; a controller controlling the opening degree of the first pressure regulating valve so that the pressure detected by the first pressure detector becomes a first set value; a start valve provided on the upstream side of the pressure detector; and a differential pressure detector for detecting the pressure difference before and after the start valve in the closed valve state.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: September 22, 2015
    Assignee: CENTRAL GLASS COMPANY, LIMITED
    Inventors: Akifumi Yao, Keita Nakahara
  • Publication number: 20150118579
    Abstract: The present invention provides an electrolytic solution for a nonaqueous electrolyte battery and a nonaqueous electrolyte battery having excellent cycle characteristics and high-temperature storage characteristics without causing hydrolysis of a fluorine-containing lithium salt, such as LiPF6, contained as a solute and containing a less amount of free fluorine ions, as well as a method of producing the electrolytic solution for a nonaqueous electrolyte battery.
    Type: Application
    Filed: May 29, 2013
    Publication date: April 30, 2015
    Inventors: Yuki Kondo, Keita Nakahara, Satoshi Muramoto, Takayoshi Morinaka
  • Publication number: 20150111098
    Abstract: The present invention provides a method of safely producing a solution containing a tetrafluoro(oxalate)phosphate in which the amounts of chlorine compounds and free acids are low such that crystallization refinement is not required in a post-process. The method produces a tetrafluoro(oxalate)phosphate solution by mixing a tetrafluoro(oxalate)phosphate with oxalic acid in a non-aqueous solvent and then adding silicon tetrachloride to the resulting mixture solution for reaction. In the reaction, the addition ratio of the hexafluorophosphate, oxalic acid, and silicon tetrachloride is controlled such that the amount of the hexafluorophosphate is 1.90 moles or more and the amount of the oxalic acid is 1.90 to 2.10 moles, based on 1 mole of the silicon tetrachloride.
    Type: Application
    Filed: May 29, 2013
    Publication date: April 23, 2015
    Inventors: Makoto Kubo, Takayoshi Morinaka, Keita Nakahara, Satoshi Muramoto
  • Publication number: 20150004483
    Abstract: Provided are a method for judging the amount of impurities in a solvent for an electrolyte liquid to be used in a non-aqueous electrolyte liquid battery, that enables judging, more easily than conventionally, the amount in which several types of impurities causing degradation of battery performance is contained in the solvent; a method for producing an electrolyte liquid using this judging method; and an electrolyte liquid. The judging method includes: obtaining a reaction solution by adding a Lewis acid to the solvent; measuring the Hazen value of the reaction solution; and judging whether the value is no more than a predetermined threshold. The producing method includes mixing, with an electrolytic salt, the solvent for which the Hazen value has been judged to be no more than the threshold by the judging method. The electrolyte liquid contains: the solvent with the Hazen value as judged above; and an electrolytic salt.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 1, 2015
    Inventors: Keita NAKAHARA, Natsuya NISHIMURA
  • Patent number: 8864960
    Abstract: A fluorine gas generating apparatus generating a fluorine gas by electrolyzing hydrogen fluoride in molten salt, includes: an electrolytic cell including, above a liquid level of molten salt, a first gas chamber into which a product gas mainly containing the fluorine gas generated at an anode immersed in the molten salt and a second gas chamber separated from the first gas chamber into which a byproduct gas mainly containing a hydrogen gas generated at a cathode immersed in the molten salt; a hydrogen fluoride supply source retaining hydrogen fluoride to be replenished in the electrolytic cell; a refining device trapping a hydrogen fluoride gas evaporated from the molten salt in the electrolytic cell and mixed in the product gas generated from the anode to refine the fluorine gas; and a recovery facility conveying and recovering the hydrogen fluoride trapped in the refining device in the electrolytic cell or the hydrogen fluoride supply source.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: October 21, 2014
    Assignee: Central Glass Company, Limited
    Inventors: Akifumi Yao, Tatsuo Miyazaki, Yosuke Nakamura, Keita Nakahara, Nobuyuki Tokunaga
  • Publication number: 20130221024
    Abstract: Disclosed is a halogen-containing gas supply apparatus for supplying a halogen-containing gas from a container filled with the halogen-containing gas at a high pressure to an external apparatus, the halogen-containing gas supply apparatus including: a supply tube connecting the container and the external apparatus; a supply valve attached to the supply tube to supply the halogen-containing gas from the container; and a shock wave prevention mechanism installed downstream of the supply valve to prevent generation of a shock wave.
    Type: Application
    Filed: September 7, 2011
    Publication date: August 29, 2013
    Applicant: CENTRAL GLASS COMPANY, LIMITED
    Inventors: Akifumi Yao, Tomonori Umezaki, Keita Nakahara, Yuta Takeda
  • Publication number: 20130032471
    Abstract: A fluorine gas generating apparatus includes: a first main passage connected to a first gas chamber and supplying a fluorine gas to an external device; a first conveying device leading out and conveying the fluorine gas from the first gas chamber; a first pressure detector detecting the pressure on the upstream side of the first conveying device; a first pressure regulating valve returning the fluorine gas from the first conveying device to the suction side of the first conveying device; a controller controlling the opening degree of the first pressure regulating valve so that the pressure detected by the first pressure detector becomes a first set value; a start valve provided on the upstream side of the pressure detector; and a differential pressure detector for detecting the pressure difference before and after the start valve in the closed valve state.
    Type: Application
    Filed: April 4, 2011
    Publication date: February 7, 2013
    Applicant: CENTRAL GLASS COMPANY, LIMITED.
    Inventors: Akifumi Yao, Keita Nakahara
  • Publication number: 20120241313
    Abstract: A fluorine gas generating apparatus generating a fluorine gas by electrolyzing hydrogen fluoride in molten salt, includes: an electrolytic cell including, above a liquid level of molten salt, a first gas chamber into which a product gas mainly containing the fluorine gas generated at an anode immersed in the molten salt and a second gas chamber separated from the first gas chamber into which a byproduct gas mainly containing a hydrogen gas generated at a cathode immersed in the molten salt; a hydrogen fluoride supply source retaining hydrogen fluoride to be replenished in the electrolytic cell; a refining device trapping a hydrogen fluoride gas evaporated from the molten salt in the electrolytic cell and mixed in the product gas generated from the anode to refine the fluorine gas; and a recovery facility conveying and recovering the hydrogen fluoride trapped in the refining device in the electrolytic cell or the hydrogen fluoride supply source.
    Type: Application
    Filed: November 25, 2010
    Publication date: September 27, 2012
    Applicant: CENTRAL GLASS COMPANY, LIMITED
    Inventors: Akifumi Yao, Tatsuo Miyazaki, Yosuke Nakamura, Keita Nakahara, Nobuyuki Tokunaga
  • Publication number: 20120006487
    Abstract: [Task] It is a task to provide a fluorine gas supply system which can stably supply fluorine gas generated by a fluorine gas generation device to a semiconductor processing device in a large quantity and in a precise concentration. [Means for solving task] In the fluorine gas supply system, a mixed gas stored in a buffer tank is introduced into a gas introducing piping before the mixed gas is adjusted in the buffer tank to circulate the mixed gas and a monitoring device is disposed which measures a fluorine gas concentration within the mixed gas so that, in response to the obtained fluorine gas concentration, a flow quantity of inert gas supply source can be adjusted.
    Type: Application
    Filed: February 26, 2010
    Publication date: January 12, 2012
    Applicant: Central Glass Company, Limited
    Inventors: Akiou Kikuchi, Isamu Mori, Akifumi Yao, Tatsuo Miyazaki, Keita Nakahara