Patents by Inventor Etsuro Sato
Etsuro Sato 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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Publication number: 20180221815Abstract: In a system for dehydrating carbon dioxide gas, the carbon dioxide gas is cooled by using a turbo expander (21), and the power extracted by the turbo expander from the carbon dioxide gas is used in the system for compressing the carbon dioxide gas. The cooled carbon dioxide gas is fed to a knock-out drum (22) to remove free water therefrom. The carbon dioxide gas from the separator is introduced to a secondary dehydration unit (11) and recompressed to the required pressure for carbon storage or for EOR operation.Type: ApplicationFiled: July 30, 2015Publication date: August 9, 2018Inventors: Yoshitsugi KIKKAWA, Etsuro SATO, Takeshi HINO, Shinji KANETA, Junichiro TANAKA
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Publication number: 20110220045Abstract: A variable valve device has a hydraulic actuator that implements discharge of operating oil in a pressure chamber and a hydraulic control valve that controls supply and discharge of the operating oil to and from the hydraulic actuator by opening and closing, thereby preventing the closing movement of the intake valve. After a signal that closes the hydraulic control valve in a current engine control cycle is output at a prescribed crank angle, the crank angle of a crankshaft, when surge pressure in the pressure chamber has exceeded a prescribed threshold value resulting from closing of the hydraulic control valve, is determined, and at least either an output crank angle or a waveform of the signal that closes the hydraulic control valve is corrected based on the operation start crank angle, and the corrected signal is output to the hydraulic control valve in a next control cycle.Type: ApplicationFiled: November 11, 2009Publication date: September 15, 2011Applicant: KOMATSU LTD.Inventors: Etsuro Sato, Hideaki Tachibana, Youhei Hisada, kazuo Ohta
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Publication number: 20110214631Abstract: A variable valve device and a method of controlling the variable valve device, wherein, in order to prevent a shortage of oil film in a spool section, only the spool of a solenoid on/off valve is moved at a timing not affecting operation of an air intake valve, to thereby stabilize operation of the solenoid on/off valve.Type: ApplicationFiled: November 11, 2009Publication date: September 8, 2011Applicant: KOMATSU LTD.Inventors: Etsuro Sato, Hideaki Tachibana, Youhei Hisada, Kazuo Ohta
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Patent number: 7780933Abstract: All sulfur compounds can be efficiently removed from natural gas that contains hydrogen sulfide and other sulfur compounds such as mercaptan without using physical absorption. The process comprises an absorption step of treating natural gas by means of a chemical absorption method using an amine-containing solution to mainly remove hydrogen sulfide and carbon dioxide, an adsorption step of flowing the natural gas from the absorption step through a packed bed of a molecular sieve to mainly remove mercaptan, a recovery step of recovering sulfur compounds by converting the hydrogen sulfide removed in the absorption step into sulfur by means of the Claus process, a regeneration step of desorbing the mercaptan adsorbed on the molecular sieve in the adsorption step using heated gas and a reaction step of converting the mercaptan in the regeneration exhaust gas exhausted from the regeneration step into hydrogen sulfide.Type: GrantFiled: June 27, 2006Date of Patent: August 24, 2010Assignee: Chiyoda CorporationInventors: Yoshitsugi Kikkawa, Noriyoshi Nozawa, Hiroshi Inoue, Etsuro Sato
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Publication number: 20090199796Abstract: An engine valve device includes an intake valve which opens and closes an intake port by a pressing force of a rotating cam and a pressing force of a valve spring, a piston which is movable in a same direction as the intake valve, a cylinder portion which houses the piston such that the piston is movable inside, a hydraulic actuator including the piston and the cylinder portion, a supply discharge pipe line which communicates with a pressure chamber formed by the piston and the cylinder portion, an accumulator which accumulates hydraulic oil flowed out from the pressure chamber via the supply discharge pipe line, and an electromagnetic on-off valve which controls a flow of the hydraulic oil between the pressure chamber and the accumulator. The electromagnetic on-off valve is arranged on the supply discharge pipe line between the hydraulic actuator and the accumulator.Type: ApplicationFiled: June 22, 2007Publication date: August 13, 2009Applicant: KOMATSU LTD.Inventors: Youhei Hisada, Hideaki Tachibana, Etsuro Sato, Kunio Horiai, Jun Maruyama
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Publication number: 20090130009Abstract: All sulfur compounds can be efficiently removed from natural gas that contains hydrogen sulfide and other sulfur compounds such as mercaptan without using physical absorption. The process comprises an absorption step of treating natural gas by means of a chemical absorption method using an amine-containing solution to mainly remove hydrogen sulfide and carbon dioxide, an adsorption step of flowing the natural gas from the absorption step through a packed bed of a molecular sieve to mainly remove mercaptan, a recovery step of recovering sulfur compounds by converting the hydrogen sulfide removed in the absorption step into sulfur by means of the Claus process, a regeneration step of desorbing the mercaptan adsorbed on the molecular sieve in the adsorption step using heated gas and a reaction step of converting the mercaptan in the regeneration exhaust gas exhausted from the regeneration step into hydrogen sulfide.Type: ApplicationFiled: June 27, 2006Publication date: May 21, 2009Applicant: CHIYODA CORPORATIONInventors: Yoshitsugi Kikkawa, Noriyoshi Nozawa, Hiroshi Inoue, Etsuro Sato
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Patent number: 3951998Abstract: Novel benzothiazole derivatives of the formula ##SPC1##Wherein R.sub.1 and R.sub.2 are individually hydrogen, lower alkyl, nitro, halogen, optionally substituted amino, carboxyl, lower alkoxy-carbonyl or di-lower alkyl-carbamoyl; and R.sub.3 and R.sub.4 are individually hydrogen, lower alkyl or .alpha.-lower alkyl-benzyl or NR.sub.3 R.sub.4 is a saturated heterocyclic ring containing a nitrogen atom, and their salts. They are useful as antihypertensives.Type: GrantFiled: June 17, 1974Date of Patent: April 20, 1976Assignee: Sumitomo Chemical Company, LimitedInventors: Toshihiko Hibino, Yoshio Suzuki, Shigeru Okano, Yoichi Hara, Etsuro Sato
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Patent number: 3932400Abstract: This invention relates to thiazole derivatives of the formula (I): ##EQU1## wherein R.sub.1 and R.sub.2 are each hydrogen, lower alkyl, cycloalkyl, optionally substituted aryl or optionally substituted heteroaromatic rings containing oxygen, sulfur, nitrogen or combinations thereof, and R.sub.3 and R.sub.4 are each hydrogen or lower alkyl and salts thereof. The thiazole derivatives of the formula (I) have excellent pharmacological properties such as .beta.-adrenergic receptor blocking effects and are valuable compounds exerting preventive or therapeutic effects on heart diseases, for example, arrhythmia, coronary heart disease, etc.Type: GrantFiled: August 16, 1973Date of Patent: January 13, 1976Assignee: Sumitomo Chemical Company, LimitedInventors: Toshihiko Hibino, Yoshio Suzuki, Shigeru Okano, Yoichi Hara, Etsuro Sato