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).

  • Patent number: 10966862
    Abstract: 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: Grant
    Filed: December 23, 2016
    Date of Patent: April 6, 2021
    Assignee: NIDEK CO., LTD.
    Inventors: Hitoshi Abe, Seiki Tomita, Masato Kawai
  • Patent number: 10363172
    Abstract: 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: Grant
    Filed: February 25, 2016
    Date of Patent: July 30, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Masato Kawai, Seiki Tomita
  • Publication number: 20170181889
    Abstract: 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: Application
    Filed: December 23, 2016
    Publication date: June 29, 2017
    Applicant: NIDEK CO., LTD.
    Inventors: Hitoshi ABE, Seiki TOMITA, Masato KAWAI
  • Patent number: 9651302
    Abstract: 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: Grant
    Filed: December 12, 2006
    Date of Patent: May 16, 2017
    Assignee: TAIYO NIPPON SANSO CORPORATION
    Inventors: Masato Kawai, Morimitsu Nakamura
  • Patent number: 9510308
    Abstract: 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: Grant
    Filed: December 19, 2011
    Date of Patent: November 29, 2016
    Assignee: Furuno Electric Co. Ltd.
    Inventors: Dun Wang, Masato Kawai
  • Publication number: 20160250075
    Abstract: 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: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Applicant: NIDEK CO., LTD.
    Inventors: Masato KAWAI, Seiki TOMITA
  • Patent number: 8690990
    Abstract: 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: Grant
    Filed: February 25, 2010
    Date of Patent: April 8, 2014
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Morimitsu Nakamura, Masato Kawai, Hiroyuki Takei
  • Patent number: 8597584
    Abstract: 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: Grant
    Filed: May 19, 2010
    Date of Patent: December 3, 2013
    Assignees: Taiyo Nippon Sanso Corporation
    Inventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda
  • Publication number: 20130308688
    Abstract: 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: Application
    Filed: December 19, 2011
    Publication date: November 21, 2013
    Applicant: FURUNO ELECTRIC CO., LTD.
    Inventors: Dun Wang, Masato Kawai
  • Patent number: 8366806
    Abstract: 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: Grant
    Filed: December 29, 2010
    Date of Patent: February 5, 2013
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Tatsuya Hidano, Morimitsu Nakamura, Masato Kawai
  • Patent number: 8361058
    Abstract: 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 by
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: January 29, 2013
    Assignee: Nidek Co., Ltd.
    Inventors: Hitoshi Abe, Masato Kawai
  • Publication number: 20120011887
    Abstract: 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: Application
    Filed: February 25, 2010
    Publication date: January 19, 2012
    Inventors: Morimitsu Nakamura, Masato Kawai, Hiroyuki Takei
  • Patent number: 7993431
    Abstract: 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: Grant
    Filed: June 14, 2006
    Date of Patent: August 9, 2011
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Morimitsu Nakamura, Masato Kawai
  • Publication number: 20110126706
    Abstract: 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: Application
    Filed: December 29, 2010
    Publication date: June 2, 2011
    Applicant: TAIYO NIPPON SANSO CORPORATION
    Inventors: Tatsuya Hidano, Morimitsu Nakamura, Masato Kawai
  • Patent number: 7931736
    Abstract: 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: Grant
    Filed: March 29, 2005
    Date of Patent: April 26, 2011
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Tatsuya Hidano, Morimitsu Nakamura, Masato Kawai
  • Patent number: 7897541
    Abstract: 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: Grant
    Filed: December 13, 2005
    Date of Patent: March 1, 2011
    Assignee: OJI Paper Co., Ltd.
    Inventors: Nobuyuki Iwasaki, Hisashi Tani, Masato Kawai, Masaharu Nojima
  • Patent number: 7824474
    Abstract: 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: Grant
    Filed: September 8, 2006
    Date of Patent: November 2, 2010
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Akihiro Nakamura, Kazuhiko Fujie, Masato Kawai
  • Publication number: 20100247395
    Abstract: 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: Application
    Filed: May 19, 2010
    Publication date: September 30, 2010
    Applicants: TAIYO NIPPON SANSO CORPORATION
    Inventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda
  • Patent number: 7749306
    Abstract: 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: Grant
    Filed: March 29, 2005
    Date of Patent: July 6, 2010
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Morimitsu Nakamura, Masato Kawai
  • Patent number: 7744836
    Abstract: 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: Grant
    Filed: May 26, 2003
    Date of Patent: June 29, 2010
    Assignees: Taiyo Nippon Sanso Corporation
    Inventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda