Patents by Inventor Yusuke Ohsawa
Yusuke Ohsawa 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: 9988350Abstract: The present invention provides a compound represented by the general formula (I): in the formula, R1, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group or the like, R4 is a C1-6 alkyl group or the like, R5 is a C1-6 alkyl group or the like, R6 is a C1-6 alkyl group or the like, R7 is a hydrogen atom, a halogen atom, a C1-6 alkyl group or the like, R8 is a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group, a C1-6 alkoxy group or the like, and R9 is a hydrogen atom or a C1-6 alkyl group, or a pharmaceutically acceptable salt thereof. The compounds of the present invention have an excellent S1P1 receptor antagonistic activity and therefore are useful as an agent for the treatment or prevention of autoimmune diseases and the like.Type: GrantFiled: July 26, 2017Date of Patent: June 5, 2018Assignee: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Hitoshi Inoue, Kohsuke Ohno, Tetsuya Nakamura, Yusuke Ohsawa
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Publication number: 20170320821Abstract: [Problem] The present invention provides a novel compound having an S1P1 receptor antagonistic activity. [Solution] The present invention provides a compound represented by the general formula (I): (in the formula, Rl, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group or the like, R4 is a C1-6 alkyl group or the like, R5 is a C1-6 alkyl group or the like, R6 is a C1-6 alkyl group or the like, R7 is a hydrogen atom, a halogen atom, a C1-6 alkyl group or the like, R8 is a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group, a C1-6 alkoxy group or the like, and R9 is a hydrogen atom or a C1-6 alkyl group.) or a pharmaceutically acceptable salt thereof, a pharmaceutical compositions containing same, and use thereof. The compounds of the present invention have an excellent S1P1 receptor antagonistic activity and therefore are useful as an agent for the treatment or prevention of antoimmune diseases and the like.Type: ApplicationFiled: July 26, 2017Publication date: November 9, 2017Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Hitoshi Inoue, Kohsuke Ohno, Tetsuya Nakamura, Yusuke Ohsawa
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Patent number: 9718771Abstract: A compound having an S1P1 receptor antagonistic activity. A compound represented by general formula (I): (in the formula, R1, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group or the like, R4 is a C1-6 alkyl group or the like, R5 is a C1-6 alkyl group or the like, R6 is a C1-6 alkyl group or the like, R7 is a hydrogen atom, a halogen atom, a C1-6 alkyl group or the like, R8 is a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group, a C1-6 alkoxy group or the like, and R9 is a hydrogen atom or a C1-6 alkyl group.) or a pharmaceutically acceptable salt thereof, a pharmaceutical compositions containing same, and use thereof. The compounds have an excellent S1P1 receptor antagonistic activity and are useful for the treatment or prevention of autoimmune diseases.Type: GrantFiled: February 27, 2015Date of Patent: August 1, 2017Assignee: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Hitoshi Inoue, Kohsuke Ohno, Tetsuya Nakamura, Yusuke Ohsawa
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Publication number: 20160362368Abstract: [Problem] The present invention provides a novel compound having an S1P1 receptor antagonistic activity. [Solution] The present invention provides a compound represented by the general formula (I): (in the formula, R1, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group or the like, R4 is a C1-6 alkyl group or the like, R5 is a C1-6 alkyl group or the like, R6 is a C1-6 alkyl group or the like, R7 is a hydrogen atom, a halogen atom, a C1-6 alkyl group or the like, R8 is a halogen atom, a C1-6 alkyl group, a halo C1-6 alkyl group, a C1-6 alkoxy group or the like, and R9 is a hydrogen atom or a C1-6 alkyl group.) or a pharmaceutically acceptable salt thereof, a pharmaceutical compositions containing same, and use thereof. The compounds of the present invention have an excellent S1P1 receptor antagonistic activity and therefore are useful as an agent for the treatment or prevention of autoimmune diseases and the like.Type: ApplicationFiled: February 27, 2015Publication date: December 15, 2016Applicant: Kissei Pharmaceutical Co., Ltd.Inventors: Hitoshi Inoue, Kohsuke Ohno, Tetsuya Nakamura, Yusuke Ohsawa
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Patent number: 8808562Abstract: A method of etching an aluminum-containing layer on a substrate is described. The method includes forming plasma from a process composition containing a halogen element, and exposing the substrate to the plasma to etch the aluminum-containing layer. The method may additionally include exposing the substrate to an oxygen-containing environment to oxidize a surface of the aluminum-containing layer and control an etch rate of the aluminum-containing layer. The method may further include forming first plasma from a process composition containing HBr and an additive gas having the chemical formula CxHyRz (wherein R is a halogen element, x and y are equal to unity or greater, and z is equal to zero or greater), forming second plasma from a process composition containing HBr, and exposing the substrate to the first plasma and the second plasma to etch the aluminum-containing layer.Type: GrantFiled: September 12, 2011Date of Patent: August 19, 2014Assignee: Tokyo Electron LimitedInventors: Yusuke Ohsawa, Hiroto Ohtake, Eiji Suzuki, Kaushik Arun Kumar, Andrew W. Metz
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Patent number: 8486792Abstract: A silicon compound gas, an oxidizing gas, and a rare gas are supplied into a chamber (2) of a plasma processing apparatus (1). A microwave is supplied into the chamber (2), and a silicon oxide film is formed on a target substrate with plasma generated by the microwave. A partial pressure ratio of the rare gas is 10% or more of a total gas pressure of the silicon compound gas, the oxidizing gas, and the rare gas, and an effective flow ratio of the silicon compound gas and the oxidizing gas (oxidizing gas/silicon compound gas) is not less than 3 but not more than 11.Type: GrantFiled: May 11, 2009Date of Patent: July 16, 2013Assignee: Tokyo Electron LimitedInventors: Hirokazu Ueda, Yoshinobu Tanaka, Yusuke Ohsawa, Toshihisa Nozawa, Takaaki Matsuoka
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Publication number: 20130065398Abstract: A method of etching an aluminum-containing layer on a substrate is described. The method includes forming plasma from a process composition containing a halogen element, and exposing the substrate to the plasma to etch the aluminum-containing layer. The method may additionally include exposing the substrate to an oxygen-containing environment to oxidize a surface of the aluminum-containing layer and control an etch rate of the aluminum-containing layer. The method may further include forming first plasma from a process composition containing HBr and an additive gas having the chemical formula CxHyRz (wherein R is a halogen element, x and y are equal to unity or greater, and z is equal to zero or greater), forming second plasma from a process composition containing HBr, and exposing the substrate to the first plasma and the second plasma to etch the aluminum-containing layer.Type: ApplicationFiled: September 12, 2011Publication date: March 14, 2013Applicant: TOKYO ELECTRON LIMITEDInventors: Yusuke OHSAWA, Hiroto OHTAKE, Eiji SUZUKI, Kaushik Arun KUMAR, Andrew W. METZ
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Patent number: 8288252Abstract: There is provided a damage recovery method capable of recovering electrical characteristics of a low dielectric insulating film sufficiently while suppressing oxidation of buried metal and generation of pattern defaults. A damaged functional group generated in a surface of the low dielectric insulating film by a processing is substituted with a hydrophobic functional group (ST. 2). A damaged component present under a dense layer generated in the surface of the low dielectric insulating film by the substitution process is recovered by using an ultraviolet heating process (ST. 3).Type: GrantFiled: August 9, 2011Date of Patent: October 16, 2012Assignee: Tokyo Electron LimitedInventors: Ryuichi Asako, Yusuke Ohsawa
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Publication number: 20120190211Abstract: In a film forming method, firstly, a processing target substrate W as a base of a semiconductor device is held on a mounting table 34 by an electrostatic chuck. Then, a film forming gas is adsorbed onto the processing target substrate W (a gas adsorption process) ((A) of FIG. 6). Thereafter, the inside of the processing chamber 32 is evacuated in order to remove residues of the film forming gas ((B) of FIG. 6). Upon the completion of the first exhaust process, a plasma process using microwave is performed ((C) of FIG. 6). Upon the completion of the plasma process, the inside of the processing chamber 32 is evacuated in order to remove an unreacted reactant gas and the like ((D) of FIG. 6). These series of steps (A) to (D) are repeated in this sequence until a desired film thickness is obtained.Type: ApplicationFiled: September 9, 2010Publication date: July 26, 2012Applicant: TOKYO ELECTRON LIMITEDInventors: Hirokazu Ueda, Yusuke Ohsawa, Masahiro Horigome
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Publication number: 20120003842Abstract: There is provided a silicon oxide film forming method including forming a silicon oxide film on a processing target substrate W by supplying a silicon compound gas, an oxidizing gas and a rare gas into a processing chamber 32 while maintaining a surface temperature of a holding table 34 capable of holding thereon the processing target substrate W at a temperature equal to or lower than about 300° C. and by generating microwave plasma within the processing chamber 32, and performing a plasma process on the silicon oxide film formed on the processing target substrate W by supplying an oxidizing gas and a rare gas into the processing chamber 32 and by generating microwave plasma within the processing chamber 32.Type: ApplicationFiled: December 10, 2009Publication date: January 5, 2012Applicant: TOKYO ELECTRON LIMITEDInventors: Hirokazu Ueda, Yusuke Ohsawa, Yoshinobu Tanaka
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Publication number: 20110294232Abstract: There is provided a damage recovery method capable of recovering electrical characteristics of a low dielectric insulating film sufficiently while suppressing oxidation of buried metal and generation of pattern defaults. A damaged functional group generated in a surface of the low dielectric insulating film by a processing is substituted with a hydrophobic functional group (ST. 2). A damaged component present under a dense layer generated in the surface of the low dielectric insulating film by the substitution process is recovered by using an ultraviolet heating process (ST. 3).Type: ApplicationFiled: August 9, 2011Publication date: December 1, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Ryuichi Asako, Yusuke Ohsawa
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Patent number: 8058153Abstract: There is provided a damage recovery method capable of recovering electrical characteristics of a low dielectric insulating film sufficiently while suppressing oxidation of buried metal and generation of pattern defaults. A damaged functional group generated in a surface of the low dielectric insulating film by a processing is substituted with a hydrophobic functional group (ST. 2). A damaged component present under a dense layer generated in the surface of the low dielectric insulating film by the substitution process is recovered by using an ultraviolet heating process (ST. 3).Type: GrantFiled: June 12, 2008Date of Patent: November 15, 2011Assignee: Tokyo Electron LimitedInventors: Ryuichi Asako, Yusuke Ohsawa
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Publication number: 20110074013Abstract: A silicon compound gas, an oxidizing gas, and a rare gas are supplied into a chamber (2) of a plasma processing apparatus (1). A microwave is supplied into the chamber (2), and a silicon oxide film is formed on a target substrate with plasma generated by the microwave. A partial pressure ratio of the rare gas is 10% or more of a total gas pressure of the silicon compound gas, the oxidizing gas, and the rare gas, and an effective flow ratio of the silicon compound gas and the oxidizing gas (oxidizing gas/silicon compound gas) is not less than 3 but not more than 11.Type: ApplicationFiled: May 11, 2009Publication date: March 31, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Hirokazu Ueda, Yoshinobu Tanaka, Yusuke Ohsawa, Toshihisa Nozawa, Takaaki Matsuoka
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Publication number: 20080311728Abstract: There is provided a damage recovery method capable of recovering electrical characteristics of a low dielectric insulating film sufficiently while suppressing oxidation of buried metal and generation of pattern defaults. A damaged functional group generated in a surface of the low dielectric insulating film by a processing is substituted with a hydrophobic functional group (ST. 2). A damaged component present under a dense layer generated in the surface of the low dielectric insulating film by the substitution process is recovered by using an ultraviolet heating process (ST. 3).Type: ApplicationFiled: June 12, 2008Publication date: December 18, 2008Applicant: Tokyo Electron LimitedInventors: Ryuichi Asako, Yusuke Ohsawa