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: 12215001Abstract: The present invention provides a guide display device capable of recognizing a feature in a work area while distinguishing whether the feature is a moving body or not. In a guide display device of a crane, 3D maps are created for continuous frames; an altitude value for each grid in a 3D map that is created at time closest to the current time is obtained as a first altitude value; altitude values for respective corresponding grids in a predetermined number of 3D maps other than the 3D map that is created at time closest to the current time are obtained, and the average of the altitude values is calculated as a second altitude value; and it is determined that the feature is a moving body when the difference between the first altitude value and the second altitude value exceeds a predetermined threshold.Type: GrantFiled: March 23, 2021Date of Patent: February 4, 2025Assignees: TADANO LTD., THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Iwao Ishikawa, Takayuki Kosaka, Keita Mashima, Satoshi Kubota, Shigenori Tanaka, Masaya Nakahara, Koki Nakahata
-
Publication number: 20240429444Abstract: The present disclosure provides a nonaqueous electrolyte solution containing: (I) at least one selected from the group consisting of a compound represented by Formula (1) described in the specification, a compound represented by Formula (2) described in the specification, and a compound represented by Formula (3) described n the specification, and a nonaqueous electrolyte solution battery including at least a positive electrode, a negative electrode, a separator, and the above nonaqueous electrolyte solution.Type: ApplicationFiled: October 11, 2022Publication date: December 26, 2024Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Keita NAKAHARA, Genki SHIMIZU, Takayoshi MORINAKA
-
Publication number: 20240387873Abstract: A nonaqueous solution in contact with austenitic stainless steel, the nonaqueous solution containing a nonaqueous solvent and an imidic acid or imidic acid salt represented by a specific structure, in which a content of the nonaqueous solvent having a dielectric constant (at 25° C.) of 10 or less in the nonaqueous solvent is 50% by volume to 100% by volume.Type: ApplicationFiled: September 14, 2022Publication date: November 21, 2024Applicant: Central Glass Co., Ltd.Inventors: Takayoshi MORINAKA, Keita NAKAHARA, Susumu IWASAKI, Mikihiro TAKAHASHI
-
Patent number: 11757130Abstract: 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: GrantFiled: September 12, 2018Date of Patent: September 12, 2023Assignee: CENTRAL GLASS CO., LTD.Inventors: Takayoshi Morinaka, Susumu Iwasaki, Keita Nakahara, Makoto Kubo, Mikihiro Takahashi
-
Patent number: 11545697Abstract: 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: GrantFiled: September 12, 2018Date of Patent: January 3, 2023Assignee: CENTRAL GLASS CO., LTD.Inventors: Takayoshi Morinaka, Keita Nakahara, Susumu Iwasaki, Wataru Kawabata, Mikihiro Takahashi
-
Publication number: 20220384847Abstract: 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: ApplicationFiled: August 6, 2020Publication date: December 1, 2022Inventors: Mikihiro TAKAHASHI, Masutaka SHINMEN, Takayoshi MORINAKA, Masataka FUJIMOTO, Susumu IWASAKI, Keita NAKAHARA, Masahiro MIURA, Shunsuke MIMURA, Katsuya KUBO
-
Publication number: 20220278371Abstract: 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: ApplicationFiled: July 8, 2020Publication date: September 1, 2022Applicant: CENTRAL GLASS CO., LTD.Inventors: Wataru KAWABATA, Mikihiro TAKAHASHI, Takayoshi MORINAKA, Keita NAKAHARA, Takahiro TANIGAWA
-
Publication number: 20200313236Abstract: 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: ApplicationFiled: September 12, 2018Publication date: October 1, 2020Applicant: CENTRAL GLASS CO., LTD.Inventors: Takayoshi MORINAKA, Keita NAKAHARA, Susumu IWASAKI, Wataru KAWABATA, Mikihiro TAKAHASHI
-
Publication number: 20200287241Abstract: 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: ApplicationFiled: September 12, 2018Publication date: September 10, 2020Applicant: CENTRAL GLASS CO., LTD.Inventors: Takayoshi MORINAKA, Susumu IWASAKI, Keita NAKAHARA, Makoto KUBO, Mikihiro TAKAHASHI
-
Patent number: 10329155Abstract: 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: GrantFiled: November 17, 2015Date of Patent: June 25, 2019Assignee: Central Glass Company, LimitedInventors: Keita Nakahara, Takayoshi Morinaka, Yuta Ikeda, Natsuya Nishimura
-
Publication number: 20170334723Abstract: 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: ApplicationFiled: November 17, 2015Publication date: November 23, 2017Inventors: Keita NAKAHARA, Takayoshi MORINAKA, Yuta IKEDA, Natsuya NISHIMURA
-
Patent number: 9139918Abstract: 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: GrantFiled: April 4, 2011Date of Patent: September 22, 2015Assignee: CENTRAL GLASS COMPANY, LIMITEDInventors: Akifumi Yao, Keita Nakahara
-
Publication number: 20150118579Abstract: 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: ApplicationFiled: May 29, 2013Publication date: April 30, 2015Inventors: Yuki Kondo, Keita Nakahara, Satoshi Muramoto, Takayoshi Morinaka
-
Publication number: 20150111098Abstract: 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: ApplicationFiled: May 29, 2013Publication date: April 23, 2015Inventors: Makoto Kubo, Takayoshi Morinaka, Keita Nakahara, Satoshi Muramoto
-
Publication number: 20150004483Abstract: 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: ApplicationFiled: June 24, 2014Publication date: January 1, 2015Inventors: Keita NAKAHARA, Natsuya NISHIMURA
-
Patent number: 8864960Abstract: 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: GrantFiled: November 25, 2010Date of Patent: October 21, 2014Assignee: Central Glass Company, LimitedInventors: Akifumi Yao, Tatsuo Miyazaki, Yosuke Nakamura, Keita Nakahara, Nobuyuki Tokunaga
-
Publication number: 20130221024Abstract: 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: ApplicationFiled: September 7, 2011Publication date: August 29, 2013Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Akifumi Yao, Tomonori Umezaki, Keita Nakahara, Yuta Takeda
-
Publication number: 20130032471Abstract: 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: ApplicationFiled: April 4, 2011Publication date: February 7, 2013Applicant: CENTRAL GLASS COMPANY, LIMITED.Inventors: Akifumi Yao, Keita Nakahara
-
Publication number: 20120241313Abstract: 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: ApplicationFiled: November 25, 2010Publication date: September 27, 2012Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Akifumi Yao, Tatsuo Miyazaki, Yosuke Nakamura, Keita Nakahara, Nobuyuki Tokunaga
-
Publication number: 20120006487Abstract: [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: ApplicationFiled: February 26, 2010Publication date: January 12, 2012Applicant: Central Glass Company, LimitedInventors: Akiou Kikuchi, Isamu Mori, Akifumi Yao, Tatsuo Miyazaki, Keita Nakahara