Patents by Inventor Masato Kawai
Masato Kawai 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).
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Patent number: 10966862Abstract: An ophthalmic laser treatment apparatus for generating plasma by focusing a treatment laser beam to treat a treatment target portion of a patient's eye with the plasma includes: an irradiation optical system configured to irradiate the treatment laser beam to the patient's eye; a position adjusting unit configured to adjust a focusing position of the treatment laser beam in an optical axis direction with respect to a predetermined focusing reference position; an energy adjusting unit configured to adjust irradiation energy of the treatment laser beam; a storage unit configured to store evaluation information to evaluate a permissible combination of the focusing position and the irradiation energy with respect to the focusing position; and an evaluation unit configured to evaluate a combination of the focusing position adjusted by the position adjusting unit and the irradiation energy adjusted by the energy adjusting unit based on the evaluation information.Type: GrantFiled: December 23, 2016Date of Patent: April 6, 2021Assignee: NIDEK CO., LTD.Inventors: Hitoshi Abe, Seiki Tomita, Masato Kawai
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Patent number: 10363172Abstract: An ophthalmic laser treatment apparatus includes: an aiming optical system configured to irradiate an aiming beam to a patient's eye; a laser irradiation optical system configured to irradiate a laser beam for treatment to the patient's eye; a shift unit configured to make a shift of a focus shift position corresponding to a focus position of the laser beam to a posterior or anterior position with respect to a focus position of the aiming beam; a selection receiving unit configured to receive an instruction to select any one of a plurality of treatment modes; and a control unit configured to control operations of the ophthalmic laser treatment apparatus. The control unit sets a value of a parameter related to irradiation of the laser beam, the parameter including a parameter related to the shift of the focus shift position, according to the treatment mode selected with the selection receiving unit.Type: GrantFiled: February 25, 2016Date of Patent: July 30, 2019Assignee: NIDEK CO., LTD.Inventors: Masato Kawai, Seiki Tomita
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Publication number: 20170181889Abstract: An ophthalmic laser treatment apparatus for generating plasma by focusing a treatment laser beam to treat a treatment target portion of a patient's eye with the plasma includes: an irradiation optical system configured to irradiate the treatment laser beam to the patient's eye; a position adjusting unit configured to adjust a focusing position of the treatment laser beam in an optical axis direction with respect to a predetermined focusing reference position; an energy adjusting unit configured to adjust irradiation energy of the treatment laser beam; a storage unit configured to store evaluation information to evaluate a permissible combination of the focusing position and the irradiation energy with respect to the focusing position; and an evaluation unit configured to evaluate a combination of the focusing position adjusted by the position adjusting unit and the irradiation energy adjusted by the energy adjusting unit based on the evaluation information.Type: ApplicationFiled: December 23, 2016Publication date: June 29, 2017Applicant: NIDEK CO., LTD.Inventors: Hitoshi ABE, Seiki TOMITA, Masato KAWAI
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Patent number: 9651302Abstract: A purification method for feed air in cryogenic air separation of the present invention includes purifying the feed air for the cryogenic air separation by using a temperature swing adsorption method, wherein the whole region of a carbon dioxide adsorbent layer packed in an adsorption column is used as a mass transfer zone of a carbon dioxide. Also, a purification apparatus for feed air in cryogenic air separation of the present invention includes at least two adsorption columns; and a moisture adsorbent and a carbon dioxide adsorbent being laminated and packed in the adsorption columns, wherein the packed amount of the carbon dioxide adsorbent is the same as the amount of the carbon dioxide adsorbent in the region of the carbon dioxide adsorbent which a mass transfer zone of a carbon dioxide occupies at the end of an adsorption step, and a temperature swing adsorption method is used.Type: GrantFiled: December 12, 2006Date of Patent: May 16, 2017Assignee: TAIYO NIPPON SANSO CORPORATIONInventors: Masato Kawai, Morimitsu Nakamura
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Patent number: 9510308Abstract: A LEX signal tracking method of continuously tracking a LEX signal is provided. The LEX signal broadcast from a Quasi-Zenith Satellite is demodulated. A weekend approach notification signal Snear is generated based on a time within a week obtained from the demodulated LEX signal. A state of a Long code, which is generated when a code correlation processing is performed, is analyzed. If the analyzed code state is in agreement with a stored 997425th code state, a pulse signal dplus is generated. If the generation of the pulse signal dplus is immediately after the detection of the weekend approach notification signal Snear, the Long code is reset to an initial state.Type: GrantFiled: December 19, 2011Date of Patent: November 29, 2016Assignee: Furuno Electric Co. Ltd.Inventors: Dun Wang, Masato Kawai
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Publication number: 20160250075Abstract: An ophthalmic laser treatment apparatus includes: an aiming optical system configured to irradiate an aiming beam to a patient's eye; a laser irradiation optical system configured to irradiate a laser beam for treatment to the patient's eye; a shift unit configured to make a shift of a focus shift position corresponding to a focus position of the laser beam to a posterior or anterior position with respect to a focus position of the aiming beam; a selection receiving unit configured to receive an instruction to select any one of a plurality of treatment modes; and a control unit configured to control operations of the ophthalmic laser treatment apparatus. The control unit sets a value of a parameter related to irradiation of the laser beam, the parameter including a parameter related to the shift of the focus shift position, according to the treatment mode selected with the selection receiving unit.Type: ApplicationFiled: February 25, 2016Publication date: September 1, 2016Applicant: NIDEK CO., LTD.Inventors: Masato KAWAI, Seiki TOMITA
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Patent number: 8690990Abstract: A pre-purification method of feed air for cryogenic air separation, which includes; (a) an adsorption step wherein a compressed feed air is supplied in an adsorption column, wherein a moisture adsorbent and a carbon dioxide adsorbent are filled in this order from the side where the feed air is introduced in the column, to remove water and carbon dioxide from the feed air; (b) a decompression step wherein pressure in the adsorption column is reduced; (c) a heating step wherein the adsorbents in the decompressed column are heated and regenerated, and the heating step includes a total heating step wherein the moisture adsorbent and the carbon dioxide adsorbent are heated and a partial heating step wherein the moisture adsorbent is heated; (d) a cooling step wherein the adsorbents are cooled by introducing a purge gas, which is not heated, to the adsorption column; and (e) a pressurization step wherein the cooled adsorbents are pressurized by purified air.Type: GrantFiled: February 25, 2010Date of Patent: April 8, 2014Assignee: Taiyo Nippon Sanso CorporationInventors: Morimitsu Nakamura, Masato Kawai, Hiroyuki Takei
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Patent number: 8597584Abstract: This gas purifying process removes trace constituents from a mixed gas that includes a rare gas and nitrogen as main components, and at least one from among hydrogen, nitrogen and hydrogen reaction products, and water vapor as the trace constituent. This process sequentially carries out an adsorbing step for removing water vapor and nitrogen and hydrogen reaction products; a hydrogen oxidation step for converting the hydrogen into water vapor by means of a hydrogen oxidation catalytic reaction in the presence of oxygen; and a drying step for removing water vapor generated in the hydrogen oxidation step. When nitrogen oxides are included as a trace constituent, then a denitration step is carried out prior to the adsorbing step, to convert nitrogen oxides into nitrogen and water vapor by means of a catalytic denitration reaction in the presence of a reducing substance.Type: GrantFiled: May 19, 2010Date of Patent: December 3, 2013Assignees: Taiyo Nippon Sanso CorporationInventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda
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Publication number: 20130308688Abstract: A LEX signal tracking method of continuously tracking a LEX signal is provided. The LEX signal broadcast from a Quasi-Zenith Satellite is demodulated. A weekend approach notification signal Snear is generated based on a time within a week obtained from the demodulated LEX signal. A state of a Long code, which is generated when a code correlation processing is performed, is analyzed. If the analyzed code state is in agreement with a stored 997425th code state, a pulse signal dplus is generated. If the generation of the pulse signal dplus is immediately after the detection of the weekend approach notification signal Snear, the Long code is reset to an initial state.Type: ApplicationFiled: December 19, 2011Publication date: November 21, 2013Applicant: FURUNO ELECTRIC CO., LTD.Inventors: Dun Wang, Masato Kawai
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Patent number: 8366806Abstract: A hydrocarbon adsorbent that includes a zeolite with either a H-FER structure or a MOR structure in which the pore diameter has been adjusted by ion exchange. A propane adsorbent that includes a zeolite with a MFI structure having a Si/Al ratio of no more than 20. A hydrocarbon removal unit that includes a TSA pre-purification unit having a column packed with sequential layers of activated alumina, a NaX zeolite, and the hydrocarbon adsorbent. A method of reducing the hydrocarbon content within liquid oxygen inside a cryogenic air separation unit that includes purifying feed air with the above pre-purification unit.Type: GrantFiled: December 29, 2010Date of Patent: February 5, 2013Assignee: Taiyo Nippon Sanso CorporationInventors: Tatsuya Hidano, Morimitsu Nakamura, Masato Kawai
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Patent number: 8361058Abstract: A laser treatment apparatus for irradiating a laser beam to a patient's eye, comprises: a plurality of laser sources which emit treatment laser beams having different wavelengths, each laser source being held in a main body to be mountable and demountable and connected to a power source through a connector; a light delivery optical system having a mirror for making the laser beams from the laser sources coaxial with each other to deliver each laser beam to the patient's eye; an input unit for inputting mounting information of each laser source; a control unit which checks a predetermined operation of each laser source by a sensor at the time of activation to determine whether an abnormality is present or not in each laser source, and displays an indication that the abnormality is present on a display, wherein the control unit will not perform the operation check whether the abnormality is present or not in the laser source or laser sources unmounted in the main body, based on the mounting information input byType: GrantFiled: March 19, 2009Date of Patent: January 29, 2013Assignee: Nidek Co., Ltd.Inventors: Hitoshi Abe, Masato Kawai
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Publication number: 20120011887Abstract: A pre-purification method of feed air for cryogenic air separation, which includes; (a) an adsorption step wherein a compressed feed air is supplied in an adsorption column, wherein a moisture adsorbent and a carbon dioxide adsorbent are filled in this order from the side where the feed air is introduced in the column, to remove water and carbon dioxide from the feed air; (b) a decompression step wherein pressure in the adsorption column is reduced; (c) a heating step wherein the adsorbents in the decompressed column are heated and regenerated, and the heating step includes a total heating step wherein the moisture adsorbent and the carbon dioxide adsorbent are heated and a partial heating step wherein the moisture adsorbent is heated; (d) a cooling step wherein the adsorbents are cooled by introducing a purge gas, which is not heated, to the adsorption column; and (e) a pressurization step wherein the cooled adsorbents are pressurized by purified air.Type: ApplicationFiled: February 25, 2010Publication date: January 19, 2012Inventors: Morimitsu Nakamura, Masato Kawai, Hiroyuki Takei
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Patent number: 7993431Abstract: A gas purifier of the present invention includes a purifier in which a gas-purifying agent is packed, wherein a gas is fed into the purifier, and impurities in the gas are removed by a thermal swing adsorption method, in which an amount A of the gas-purifying agent is determined such that an impurities-removing capacity possessed by half of the amount A of the gas-purifying agent is equal to the total amount of impurities in the gas to be purified in one purification step, and the amount of the gas-purifying agent packed in the purifier is the amount A or more.Type: GrantFiled: June 14, 2006Date of Patent: August 9, 2011Assignee: Taiyo Nippon Sanso CorporationInventors: Morimitsu Nakamura, Masato Kawai
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Publication number: 20110126706Abstract: A hydrocarbon adsorbent that includes a zeolite with either a H-FER structure or a MOR structure in which the pore diameter has been adjusted by ion exchange. A propane adsorbent that includes a zeolite with a MFI structure. A hydrocarbon removal unit that includes a TSA pre-purification unit having a column packed with sequential layers of activated alumina, a NaX zeolite, and the hydrocarbon adsorbent. A method of reducing the hydrocarbon content within liquid oxygen inside a cryogenic air separation unit that includes purifying feed air with the above pre-purification unit.Type: ApplicationFiled: December 29, 2010Publication date: June 2, 2011Applicant: TAIYO NIPPON SANSO CORPORATIONInventors: Tatsuya Hidano, Morimitsu Nakamura, Masato Kawai
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Patent number: 7931736Abstract: A hydrocarbon adsorbent that includes a zeolite with either a H-FER structure or a MOR structure in which the pore diameter has been adjusted by ion exchange. A propane adsorbent that includes a zeolite with a MFI structure. A hydrocarbon removal unit that includes a TSA pre-purification unit having a column packed with sequential layers of activated alumina, a NaX zeolite, and the hydrocarbon adsorbent. A method of reducing the hydrocarbon content within liquid oxygen inside a cryogenic air separation unit that includes purifying feed air with the above pre-purification unit.Type: GrantFiled: March 29, 2005Date of Patent: April 26, 2011Assignee: Taiyo Nippon Sanso CorporationInventors: Tatsuya Hidano, Morimitsu Nakamura, Masato Kawai
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Patent number: 7897541Abstract: The present invention provides a heat-sensitive recording material comprising a support and a heat-sensitive recording layer, wherein the heat-sensitive recording layer contains a leuco dye and a color developer, the leuco dye is in a form of composite particles comprising the leuco dye and a hydrophobic resin, and the color developer comprises at least 4,4?-cyclohexylidenediphenol and 4,4?-bis(N-p-tolylsulfonylaminocarbonylamino)diphenylmethane.Type: GrantFiled: December 13, 2005Date of Patent: March 1, 2011Assignee: OJI Paper Co., Ltd.Inventors: Nobuyuki Iwasaki, Hisashi Tani, Masato Kawai, Masaharu Nojima
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Patent number: 7824474Abstract: A method of activating a molded Cu-ZSM5 zeolite adsorbent of the present invention includes: oxidizing a molded product of Cu-ZSM5 zeolite in the flow of air or a gas having an equivalent oxidizability to the air at a temperature of 250° C. to 550° C.; and then heat-treating the molded product of the Cu-ZSM5 zeolite in vacuum or the flow of an inert gas at a temperature of 550° C. to 800° C. According to the present invention, an adsorbent whose adsorption performance is not deteriorated can be obtained in the case where a molded product is produced using Cu-ZSM5 zeolite.Type: GrantFiled: September 8, 2006Date of Patent: November 2, 2010Assignee: Taiyo Nippon Sanso CorporationInventors: Akihiro Nakamura, Kazuhiko Fujie, Masato Kawai
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Publication number: 20100247395Abstract: This gas purifying process removes trace constituents from a mixed gas that includes a rare gas and nitrogen as main components, and at least one from among hydrogen, nitrogen and hydrogen reaction products, and water vapor as the trace constituent. This process sequentially carries out an adsorbing step for removing water vapor and nitrogen and hydrogen reaction products; a hydrogen oxidation step for converting the hydrogen into water vapor by means of a hydrogen oxidation catalytic reaction in the presence of oxygen; and a drying step for removing water vapor generated in the hydrogen oxidation step. When nitrogen oxides are included as a trace constituent, then a denitration step is carried out prior to the adsorbing step, to convert nitrogen oxides into nitrogen and water vapor by means of a catalytic denitration reaction in the presence of a reducing substance.Type: ApplicationFiled: May 19, 2010Publication date: September 30, 2010Applicants: TAIYO NIPPON SANSO CORPORATIONInventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda
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Patent number: 7749306Abstract: A method of restarting a TSA apparatus includes, in the case where the TSA apparatus was stopped when or after when a temperature of a purge gas which flows out from a first adsorption column (5a) during a regeneration process became a peak temperature, in the first adsorption column (5a), closing an entrance valve, an exit valve, and an atmosphere-releasing valve; in a second adsorption column (5b) during an adsorption process, closing an entrance valve and an exit valve and opening an atmosphere-releasing valve so as to release a gas in the opposite direction to feed air flow, followed by closing the atmosphere-releasing valve; pressurizing, just before a restart, the second adsorption column (5b) with feed air to a pressure necessary for the adsorption process; and performing, after the restart, the regeneration process and the adsorption process continuously from the time point of stopping the TSA apparatus.Type: GrantFiled: March 29, 2005Date of Patent: July 6, 2010Assignee: Taiyo Nippon Sanso CorporationInventors: Morimitsu Nakamura, Masato Kawai
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Patent number: 7744836Abstract: This gas purifying process removes trace constituents from a mixed gas that includes a rare gas and nitrogen as main components, and at least one from among hydrogen, nitrogen and hydrogen reaction products, and water vapor as the trace constituent. This process sequentially carries out an adsorbing step for removing water vapor and nitrogen and hydrogen reaction products; a hydrogen oxidation step for converting the hydrogen into water vapor by means of a hydrogen oxidation catalytic reaction in the presence of oxygen; and a drying step for removing water vapor generated in the hydrogen oxidation step. When nitrogen oxides are included as a trace constituent, then a denitration step is carried out prior to the adsorbing step, to convert nitrogen oxides into nitrogen and water vapor by means of a catalytic denitration reaction in the presence of a reducing substance.Type: GrantFiled: May 26, 2003Date of Patent: June 29, 2010Assignees: Taiyo Nippon Sanso CorporationInventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda