Patents by Inventor Akihiro Shirai
Akihiro Shirai 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: 10889331Abstract: A hood silencer includes a back skin layer, a thin film layer, a first shape-retaining layer, a sound-absorbing layer, a second shape-retaining layer, an aeration-suppressing layer, and a front skin layer. The aeration-suppressing layer suppresses oozing of a binder resin out of the surface of the front skin layer from the second shape-retaining layer during the heat forming of the second shape-retaining layer.Type: GrantFiled: July 6, 2018Date of Patent: January 12, 2021Assignee: HOWA CO., LTD.Inventors: Takahiro Asai, Akihiro Shirai
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Patent number: 10663059Abstract: An automatic transmission controller includes a solenoid drive controller that performs a current feedback control to one or more of a plurality of solenoids that correspond to a plurality of gear positions for shifting to one of the plurality of gear positions in a transmission mechanism. From among all the solenoids, the solenoid drive controller distinguishes one or more target solenoids to operate to shift from a current gear position to a post-change gear position, and changes a current feedback cycle of the target solenoid(s) for performing the current feedback control.Type: GrantFiled: January 25, 2019Date of Patent: May 26, 2020Assignee: DENSO CORPORATIONInventor: Akihiro Shirai
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Publication number: 20200047470Abstract: A hood silencer includes a back skin layer, a thin film layer, a first shape-retaining layer, a sound-absorbing layer, a second shape-retaining layer, an aeration-suppressing layer, and a front skin layer. The aeration-suppressing layer suppresses oozing of a binder resin out of the surface of the front skin layer from the second shape-retaining layer during the heat forming of the second shape-retaining layer.Type: ApplicationFiled: July 6, 2018Publication date: February 13, 2020Applicant: HOWA TEXTILE INDUSTRY CO., LTD.Inventors: Takahiro ASAI, Akihiro SHIRAI
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Publication number: 20190234513Abstract: An automatic transmission controller includes a solenoid drive controller that performs a current feedback control to one or more of a plurality of solenoids that correspond to a plurality of gear positions for shifting to one of the plurality of gear positions in a transmission mechanism. From among all the solenoids, the solenoid drive controller distinguishes one or more target solenoids to operate to shift from a current gear position to a post-change gear position, and changes a current feedback cycle of the target solenoid(s) for performing the current feedback control.Type: ApplicationFiled: January 25, 2019Publication date: August 1, 2019Inventor: Akihiro SHIRAI
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Patent number: 9701780Abstract: A polybutadiene having a hydroxyl group at a terminal end thereof is reacted with a lactone compound such as an ?-caprolactone to obtain a polymer polyol represented by formula (I): HO—X1—Y—X2—OH (wherein X1 and X2 each independently represents a polyester component and Y represents a polybutadiene component), the polymer polyol is reacted with an unsymmetric diisocyanate to obtain a urethane prepolymer, and then the urethane prepolymer is reacted with a chain extender to obtain a polyurethane.Type: GrantFiled: February 24, 2016Date of Patent: July 11, 2017Assignee: NIPPON SODA CO., LTD.Inventors: Akihiro Shirai, Yasunori Miyashita, Shinichi Kimizuka, Mitsuhiro Nakamura
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Patent number: 9701779Abstract: A polybutadiene having a hydroxyl group at a terminal end thereof is reacted with a lactone compound such as an ?-caprolactone to obtain a polymer polyol represented by formula (I): HO—X1—Y—X2—OH (wherein X1 and X2 each independently represents a polyester component and Y represents a polybutadiene component), the polymer polyol is reacted with an unsymmetric diisocyanate to obtain a urethane prepolymer, and then the urethane prepolymer is reacted with a chain extender to obtain a polyurethane.Type: GrantFiled: May 23, 2013Date of Patent: July 11, 2017Assignee: NIPPON SODA CO., LTD.Inventors: Akihiro Shirai, Yasunori Miyashita, Shinichi Kimizuka, Mitsuhiro Nakamura
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Publication number: 20160168310Abstract: A polybutadiene having a hydroxyl group at a terminal end thereof is reacted with a lactone compound such as an ?-caprolactone to obtain a polymer polyol represented by formula (I): HO—X1—Y—X2—OH (wherein X1 and X2 each independently represents a polyester component and Y represents a polybutadiene component), the polymer polyol is reacted with an unsymmetric diisocyanate to obtain a urethane prepolymer, and then the urethane prepolymer is reacted with a chain extender to obtain a polyurethane.Type: ApplicationFiled: February 24, 2016Publication date: June 16, 2016Inventors: Akihiro SHIRAI, Yasunori MIYASHITA, Shinichi KIMIZUKA, Mitsuhiro NAKAMURA
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Patent number: 9023950Abstract: The present invention provides a styrene-based star polymer with narrow dispersion and suitable as a resist material, etc. A star polymer of the present invention is represented by the formula A[C(Y)Xm]n (wherein A represents a polyvalent aliphatic hydrocarbon group with 4-15 carbons, C represents a carbon atom, X represents a styrene-based polymer chain, Y represents a hydroxy group or an oxo group, m represents an integer of 1 or 2, and n represents any integer from 2 to 5, with the proviso that if Y is a hydroxy group, m is 2, and if Y is an oxo group, m is 1). The star polymer can be produced by reacting a styrene-based polymer having an anionic end, and an aliphatic carboxylic acid ester represented by A(COOR)n (wherein R represents an alkyl group having 1-8 carbons, and A and n are as defined for the above formula).Type: GrantFiled: April 18, 2011Date of Patent: May 5, 2015Assignee: Nippon Soda Co., Ltd.Inventors: Akihiro Shirai, Takeshi Niitani
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Publication number: 20150119535Abstract: A polybutadiene having a hydroxyl group at a terminal end thereof is reacted with a lactone compound such as an ?-caprolactone to obtain a polymer polyol represented by formula (I): HO—X1—Y—X2—OH (wherein X1 and X2 each independently represents a polyester component and Y represents a polybutadiene component), the polymer polyol is reacted with an unsymmetric diisocyanate to obtain a urethane prepolymer, and then the urethane prepolymer is reacted with a chain extender to obtain a polyurethane.Type: ApplicationFiled: May 23, 2013Publication date: April 30, 2015Inventors: Akihiro Shirai, Yasunori Miyashita, Shinichi Kimizuka, Mitsuhiro Nakamura
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Patent number: 8915351Abstract: A work piece conveying apparatus capable of conveying plural work pieces with differing transport pitches to each other. The work piece conveying apparatus includes a drive motor that includes an output shaft, plural drive pulleys that are fixed to the output shaft and have different diameters to each other, plural timing belts that are respectively entrained around the plural drive pulleys, and plural coupling plates that are respectively fixed to the timing belts and that move reciprocating with different transport pitches to each other accompanying forward and reverse rotation of the output shaft, and cause to convey work pieces.Type: GrantFiled: July 1, 2013Date of Patent: December 23, 2014Assignee: Asmo Co., Ltd.Inventors: Yoshimasa Tomida, Akihiro Shirai
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Patent number: 8710165Abstract: A multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer: where A represents an organic group having 3 or more branched chains, Xa represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m1 represents any integer of 1 to the number of branched chains of A, m2 represents the number of branched chains of A, n1 represents an integer of 0 or 1 or more, and Ra represents an organic group that is not associated with the polymerization reaction.Type: GrantFiled: February 7, 2011Date of Patent: April 29, 2014Assignee: Nippon Soda Co., Ltd.Inventors: Takeshi Niitani, Kiyoshi Kawamura, Akihiro Shirai
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Publication number: 20140008181Abstract: A work piece conveying apparatus capable of conveying plural work pieces with differing transport pitches to each other. The work piece conveying apparatus includes a drive motor that includes an output shaft, plural drive pulleys that are fixed to the output shaft and have different diameters to each other, plural timing belts that are respectively entrained around the plural drive pulleys, and plural coupling plates that are respectively fixed to the timing belts and that move reciprocating with different transport pitches to each other accompanying forward and reverse rotation of the output shaft, and cause to convey work pieces.Type: ApplicationFiled: July 1, 2013Publication date: January 9, 2014Inventors: Yoshimasa TOMIDA, Akihiro SHIRAI
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Patent number: 8420744Abstract: A modified polysiloxane compound represented by formula (I): X(Y)n (I), where X represents a polymer block having a repeating unit represented by formula (II), Y represents a polymer block having a repeating unit represented by formula (III), and n represents 1 or 2, and having an X to Y weight ratio of 1/99?X/Y?90/10 and a number-average molecular weight of 1,000 to 100,000 is subjected to treat for elimination of a protecting group for a hydroxyl group by adding a non-aqueous solution containing hydrogen chloride in the presence of a non-aqueous solvent so that hydrogen chloride is 0.9 to 1.3 equivalents with respect to 1 equivalent of the repeating unit represented by formula (II).Type: GrantFiled: August 19, 2010Date of Patent: April 16, 2013Assignee: Nippon Soda Co., Ltd.Inventors: Akihiro Shirai, Toshiaki Okado, Takeshi Shimotori
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Publication number: 20130030127Abstract: The present invention provides a styrene-based star polymer with narrow dispersion and suitable as a resist material, etc. A star polymer of the present invention is represented by the formula A[C(Y)Xm]n (wherein A represents a polyvalent aliphatic hydrocarbon group with 4-15 carbons, C represents a carbon atom, X represents a styrene-based polymer chain, Y represents a hydroxy group or an oxo group, m represents an integer of 1 or 2, and n represents any integer from 2 to 5, with the proviso that if Y is a hydroxy group, m is 2, and if Y is an oxo group, m is 1). The star polymer can be produced by reacting a styrene-based polymer having an anionic end, and an aliphatic carboxylic acid ester represented by A(COOR)n (wherein R represents an alkyl group having 1-8 carbons, and A and n are as defined for the above formula).Type: ApplicationFiled: April 18, 2011Publication date: January 31, 2013Applicant: NIPPON SODA CO., LTD.Inventors: Akihiro Shirai, Takeshi Niitani
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Publication number: 20120202910Abstract: An object of the present invention is to provide a method for producing a polybutadiene by anionic polymerization at a low temperature, in which the microstructures thereof is controlled to polybutadienes having diverse physical properties. The present invention provides a method for producing a polybutadiene by anionic polymerization of 1,3-butadiene in the presence of a polymerization initiator and under the conditions of a reaction temperature not higher than the boiling point of butadiene, wherein the polymerization is performed in the presence of a potassium salt in an aprotic polar solvent or in a mixed solvent of an aprotic polar solvent and a nonpolar solvent. The potassium salt is preferably potassium t-butoxide, and the solvent is preferably a mixed solvent of tetrahydrofuran and hexane. The resultant polybutadiene can be used in an adhesive composition and in a plate-making material composition used for flexographic printing plates.Type: ApplicationFiled: October 12, 2010Publication date: August 9, 2012Applicant: NIPPON SODA CO., LTD.Inventors: Akihiro Shirai, Yasunori Miyashita, Takeshi Shimotori
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Publication number: 20120136122Abstract: A modified polysiloxane compound represented by formula (I): X(Y)n (I), where X represents a polymer block having a repeating unit represented by formula (II), Y represents a polymer block having a repeating unit represented by formula (III), and n represents 1 or 2, and having an X to Y weight ratio of 1/99?X/Y?90/10 and a number-average molecular weight of 1,000 to 100,000 is subjected to treat for elimination of a protecting group for a hydroxyl group by adding a non-aqueous solution containing hydrogen chloride in the presence of a non-aqueous solvent so that hydrogen chloride is 0.9 to 1.3 equivalents with respect to 1 equivalent of the repeating unit represented by formula (II).Type: ApplicationFiled: August 19, 2010Publication date: May 31, 2012Applicant: NIPPON SODA CO., LTD.Inventors: Akihiro Shirai, Toshiaki Okado, Takeshi Shimotori
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Publication number: 20110152388Abstract: A multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer: where A represents an organic group having 3 or more branched chains, Xa represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m1 represents any integer of 1 to the number of branched chains of A, m2 represents the number of branched chains of A, n1 represents an integer of 0 or 1 or more, and Ra represents an organic group that is not associated with the polymerization reaction.Type: ApplicationFiled: February 7, 2011Publication date: June 23, 2011Applicant: NIPPON SODA CO., LTD.Inventors: Takeshi Niitani, Kiyoshi Kawamura, Akihiro Shirai
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Patent number: 7919570Abstract: The present invention provides a multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer: wherein A represents an organic group having 3 or more branched chains, Xa represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m1 represents any integer of 1 to the number of branched chains of A, m2 represents the number of branched chains of A, n1 represents an integer of 0 or 1 or more, and Ra represents an organic group which is not associated with the polymerization reaction.Type: GrantFiled: August 11, 2005Date of Patent: April 5, 2011Assignee: Nippon Soda Co., Ltd.Inventors: Takeshi Niitani, Kiyoshi Kawamura, Akihiro Shirai
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Publication number: 20100210805Abstract: Disclosed is a star polymer having a core part produced by anionic polymerizing one or more polyfunctional (meth)acrylic acid ester derivative represented by formula (IV) (wherein R represents a hydrogen atom, etc., n represents 2 or 3, and A represents an organic group linking at a carbon atom) in an organic solvent, in the presence of 0.1 to 0.99 mol of organic alkali metal compound with respect to 1 mol of the compound of the formula (IV), and in the presence of 0.1 to 20 mol of inorganic salts of alkali metal or alkali earth metal with respect to 1 mol of the organic alkali metal compound, and an arm part formed by anionic polymerizing from the anionic active site of the core part one or more monofunctional (meth)acrylic acid ester derivative represented by formula (I) (wherein R1 represents a hydrogen atom, etc., and R2 represents an organic group).Type: ApplicationFiled: August 29, 2008Publication date: August 19, 2010Applicant: NIPPON SODA CO., LTD.Inventors: Akihiro Shirai, Takeshi Shimotori, Shinji Marumo, Takeshi Niitani
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Publication number: 20080214685Abstract: The present invention provides a multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer: wherein A represents an organic group having 3 or more branched chains, Xa represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m1 represents any integer of 1 to the number of branched chains of A, m2 represents the number of branched chains of A, n1 represents an integer of 0 or 1 or more, and Ra represents an organic group which is not associated with the polymerization reaction.Type: ApplicationFiled: August 11, 2005Publication date: September 4, 2008Applicant: NIPPON SODA CO., LTD.Inventors: Takeshi Niitani, Kiyoshi Kawamura, Akihiro Shirai