Patents by Inventor Shingo Kajiyama
Shingo Kajiyama 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: 20220202015Abstract: Provided is a microbicide-containing aqueous composition having a superior effect of stabilizing 5-chloro-2-methyl-4-isothiazolin-3-one. This microbicide composition includes: (A) 5-chloro-2-methyl-4-isothiazolin-3-one; (B) 2,2,6,6-tetramethylpiperidin-1-oxyl; and (C) at least one solvent selected from the group consisting of water and a hydrophilic organic solvent.Type: ApplicationFiled: June 2, 2020Publication date: June 30, 2022Applicant: CHEMICREA INC.Inventors: Takamasa YOSHIDA, Tomoaki NOGUCHI, Naoto TAGUCHI, Shingo KAJIYAMA
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Patent number: 9748044Abstract: A photosensitizer is a dye represented by the following formula (I) or its salt. In the following chemical formula, m represents an integer of 0 through 4, and n represents an integer of 0 or 1, and p represents an integer of 0 to 2. R1, R2 and R3 represent a hydrogen atom, an alkyl group, an aryl group or the like. R4, R4?, R4?, R5, R6, R7, R8 and R9 represent a hydrogen atom, an alkyl group and the like. X represents a carbonyl group or the like.Type: GrantFiled: December 14, 2016Date of Patent: August 29, 2017Assignee: Chemicrea Inc.Inventors: Hidetoshi Miura, Shingo Kajiyama, Yukiko Inoue, Shinji Higashijima
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Patent number: 9693912Abstract: An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 ?m, and (c) the hollowness is 5 to 30%.Type: GrantFiled: February 15, 2012Date of Patent: July 4, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Kenichi Suzuki, Shingo Kajiyama
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Publication number: 20170092436Abstract: A photosensitizer is a dye represented by the following formula (I) or its salt. In the following chemical formula, m represents an integer of 0 through 4, and n represents an integer of 0 or 1, and p represents an integer of 0 to 2. R1, R2 and R3 represent a hydrogen atom, an alkyl group, an aryl group or the like. R4, R4?, R4?, R5, R6, R7, R8 and R9 represent a hydrogen atom, an alkyl group and the like. X represents a carbonyl group or the like.Type: ApplicationFiled: December 14, 2016Publication date: March 30, 2017Applicant: Chemicrea Inc.Inventors: Hidetoshi Miura, Shingo Kajiyama, Yukiko Inoue, Shinji Higashijima
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Patent number: 9404207Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.Type: GrantFiled: October 23, 2015Date of Patent: August 2, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
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Publication number: 20160040335Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.Type: ApplicationFiled: October 23, 2015Publication date: February 11, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Akio MATSUBARA, Shingo KAJIYAMA, Kenichi SUZUKI, Hirohisa SHIODE, Takayuki KUBO
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Patent number: 9200392Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.Type: GrantFiled: December 5, 2011Date of Patent: December 1, 2015Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
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Publication number: 20130317469Abstract: An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 ?m, and (c) the hollowness is 5 to 30%.Type: ApplicationFiled: February 15, 2012Publication date: November 28, 2013Applicant: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Kenichi Suzuki, Shingo Kajiyama
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Publication number: 20130266874Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.Type: ApplicationFiled: December 5, 2011Publication date: October 10, 2013Applicant: MITSUI CHEMICALS,INC.Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo