Patents by Inventor Katsushi Maeda
Katsushi Maeda 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: 11020290Abstract: The present invention discloses a material for an absorbent article, the material having an organic hydrophobic antimicrobial agent and a hydrophilic non-volatile organic solvent. The material for an absorbent article is preferably manufactured by a method having a step of applying an antimicrobial agent solution to a material for an absorbent article, the antimicrobial agent solution being formed by dissolving an organic hydrophobic antimicrobial agent in a hydrophilic non-volatile organic solvent. The present invention also discloses an absorbent article in which the material for an absorbent article is used. The absorbent article is preferably manufactured by using a method having a step of making an absorbent core contain an antimicrobial agent solution formed by dissolving an organic hydrophobic antimicrobial agent in a hydrophilic non-volatile organic solvent.Type: GrantFiled: January 19, 2016Date of Patent: June 1, 2021Assignee: KAO CORPORATIONInventors: Makoto Tsuji, Takashi Itoi, Ichiro Mori, Satoshi Ishioka, Katsushi Maeda
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Publication number: 20180318149Abstract: The present invention discloses a material for an absorbent article, the material having an organic hydrophobic antimicrobial agent and a hydrophilic non-volatile organic solvent. The material for an absorbent article is preferably manufactured by a method having a step of applying an antimicrobial agent solution to a material for an absorbent article, the antimicrobial agent solution being formed by dissolving an organic hydrophobic antimicrobial agent in a hydrophilic non-volatile organic solvent. The present invention also discloses an absorbent article in which the material for an absorbent article is used. The absorbent article is preferably manufactured by using a method having a step of making an absorbent core contain an antimicrobial agent solution formed by dissolving an organic hydrophobic antimicrobial agent in a hydrophilic non-volatile organic solvent.Type: ApplicationFiled: January 19, 2016Publication date: November 8, 2018Applicant: KAO CORPORATIONInventors: Makoto TSUJI, Takashi ITOI, Ichiro MORI, Satoshi ISHIOKA, Katsushi MAEDA
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Patent number: 10099821Abstract: A medical rubber closure according to the present invention includes a disc-shaped flange portion and a leg portion formed to be continuous to a lower surface side of the flange portion, and a region at the lower surface side of the flange portion and the leg portion are made of a nitrile based rubber, a region at a top surface side of the flange portion is made of a butyl based rubber, and the leg portion is laminated with a coating layer made of a fluorine based resin film.Type: GrantFiled: September 15, 2015Date of Patent: October 16, 2018Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshikazu Masuyama, Katsushi Maeda
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Patent number: 9867946Abstract: The present invention aims to provide a pre-filled syringe coated with a resin film capable of reducing sliding resistance and preventing liquid leakage by a simple method. The present invention relates to a gasket for a pre-filled syringe, which has a sliding side surface that is coated with an inactive resin film and further cut to form a cut. The cut region is preferably between ring-shaped ribs on the sliding side surface, or in a ring-shaped rib on the sliding side surface.Type: GrantFiled: March 3, 2014Date of Patent: January 16, 2018Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Shinya Iwano, Katsushi Maeda
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Publication number: 20170296757Abstract: A nozzle cap (1) is provided, which is formed from a rubber composition containing a rubber component including a diene rubber and a non-diene rubber, wherein the diene rubber is present in a proportion of 20 to 70 parts by mass based on 100 parts by mass of the total of the rubbers in the rubber composition. The nozzle cap (1) has a moderate gas transmission property and, hence, can be quickly sterilized by EOG sterilization and steam sterilization, quickly removed of residues by deaeration, and quickly dried in a shorter period after the steam sterilization. In addition, the nozzle cap (1) is less liable to be loosened due to increase in internal pressure and compression set and detached from the nozzle, and has a reduced leaching substance amount before and after the sterilization.Type: ApplicationFiled: August 28, 2015Publication date: October 19, 2017Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Katsushi MAEDA, Narihiro TAHARA
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Patent number: 9724476Abstract: The present invention provides, medical rubber parts that do not physically and chemically affect the quality of preparations. The present invention relates to a medical rubber part obtained by press-molding an unvulcanized rubber mainly containing a rubber for forming a liquid-contacting portion and an unvulcanized rubber mainly containing a butyl-based rubber for forming a non-liquid-contacting portion, wherein a color difference dE between the liquid-contacting portion and the non-liquid-contacting portion is 6.0 or more in NBS units.Type: GrantFiled: August 27, 2014Date of Patent: August 8, 2017Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Katsushi Maeda, Yoshikazu Masuyama
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Patent number: 9452264Abstract: A pre-filled syringe with excellent air-tightness and liquid-tightness and a mold for forming the gasket are provided. At least a surface of the mold for a gasket laminated with an inactive film for a pre-filled syringe forms a seal sliding surface of an annular protrusion of the gasket is mirror finished to have an arithmetic mean roughness Ra of less than 0.03 ?m.Type: GrantFiled: April 3, 2014Date of Patent: September 27, 2016Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Katsushi Maeda, Junji Tashiro, Hiroaki Nakano, Eiji Yao
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Publication number: 20160075485Abstract: A medical rubber closure according to the present invention includes a disc-shaped flange portion and a leg portion formed to be continuous to a lower surface side of the flange portion, and a region at the lower surface side of the flange portion and the leg portion are made of a nitrile based rubber, a region at a top surface side of the flange portion is made of a butyl based rubber, and the leg portion is laminated with a coating layer made of a fluorine based resin film.Type: ApplicationFiled: September 15, 2015Publication date: March 17, 2016Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yoshikazu MASUYAMA, Katsushi MAEDA
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Publication number: 20160017114Abstract: A medical rubber part according to the present invention comprises a rubber composition including at least one type of rubber component, selected from the group consisting of butyl rubbers and halogenated butyl rubbers, and not less than 3 parts by mass and not more than 50 parts by mass, with respect to 100 parts by mass of the total amount of the rubber component, of silica with a BET specific surface area of not less than 1 m2/g and not more than 60 m2/g and a bulk specific gravity of not less than 30 g/liter and not more than 130 g/liter.Type: ApplicationFiled: July 13, 2015Publication date: January 21, 2016Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Katsushi MAEDA, Yoshikazu MASUYAMA
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Publication number: 20150086802Abstract: The present invention provides, medical rubber parts that do not physically and chemically affect the quality of preparations. The present invention relates to a medical rubber part obtained by press-molding an unvulcanized rubber mainly containing a rubber for forming a liquid-contacting portion and an unvulcanized rubber mainly containing a butyl-based rubber for forming a non-liquid-contacting portion, wherein a color difference dE between the liquid-contacting portion and the non-liquid-contacting portion is 6.0 or more in NBS units.Type: ApplicationFiled: August 27, 2014Publication date: March 26, 2015Inventors: Katsushi MAEDA, Yoshikazu MASUYAMA
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Patent number: 8978909Abstract: Disclosed is a closure device for a container, which seals an opening (6) that opens at the top of a container (2) and has a rim (7) on its periphery. The closure device comprises a seal member (8) that is to cover the opening (6) on the top of the container (2), and a synthetic resin cap (9) that is to press the seal member (8) against the upper surface of the rim (7). The seal member (8) comprises a flange (10) to be mounted on the upper surface of the rim (7). The cap (9) comprises a top wall (15), a cylinder part (16), and a locking part (18). The top wall (15) is to be disposed above the flange (10). The cylinder part (16) hangs down from the outer circumference of the top wall (15). The locking part (18) is disposed on the inner surface of the cylinder part (16). After the cap (9) is pushed down, the locking part (18) locks at the under surface of the rim (7). The upper surface of the flange (10) has a compressible projection (29).Type: GrantFiled: April 29, 2011Date of Patent: March 17, 2015Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Masahiro Kakutani, Norikazu Miyamoto, Tomohito Shirai, Katsushi Maeda, Eiji Yao
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Patent number: 8960685Abstract: The present invention provides a gasket for glass or resin syringes which is laminated with an inert resin film and is excellent in plugging properties, liquid-tightness, and slidability. The gasket laminated with an inert resin film has multiple circular ribs that are to be in sliding contact with an inner wall of a syringe barrel, wherein the circular ribs include a front circular rib having a sliding contact portion whose cross section has a diameter that expands substantially linearly toward a back end of the syringe barrel, the linear portion has a length of 10 to 55% of the length of a sliding side face of the gasket, and the diameter of the linear portion which expands substantially linearly toward a back end of the syringe barrel has a diameter expansion ratio X between a minimum diameter r (mm) and a maximum diameter R (mm) of 0.1 to 8.0%.Type: GrantFiled: August 29, 2013Date of Patent: February 24, 2015Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Katsushi Maeda, Eiji Yao
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Publication number: 20140288508Abstract: The present invention aims to provide a pre-filled syringe coated with a resin film capable of reducing sliding resistance and preventing liquid leakage by a simple method. The present invention relates to a gasket for a pre-filled syringe, which has a sliding side surface that is coated with an inactive resin film and further cut to form a cut. The cut region is preferably between ring-shaped ribs on the sliding side surface, or in a ring-shaped rib on the sliding side surface.Type: ApplicationFiled: March 3, 2014Publication date: September 25, 2014Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Shinya IWANO, Katsushi MAEDA
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Publication number: 20140228774Abstract: The present invention aims to provide a gasket for a pre-filled syringe which has excellent air-tightness and liquid-tightness and a mold for forming the gasket. The present invention relate to a mold for a gasket laminated with an inactive film for a pre-filled syringe, wherein at least a surface of the mold which forms a seal sliding surface of an annular protrusion of the gasket is mirror finished to have an arithmetic mean roughness Ra of less than 0.03 ?m.Type: ApplicationFiled: April 3, 2014Publication date: August 14, 2014Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Katsushi MAEDA, Junji TASHIRO, Hiroaki NAKANO, Eiji YAO
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Publication number: 20140062036Abstract: The present invention provides a gasket for glass or resin syringes which is laminated with an inert resin film and is excellent in plugging properties, liquid-tightness, and slidability. The gasket laminated with an inert resin film has multiple circular ribs that are to be in sliding contact with an inner wall of a syringe barrel, wherein the circular ribs include a front circular rib having a sliding contact portion whose cross section has a diameter that expands substantially linearly toward a back end of the syringe barrel, the linear portion has a length of 10 to 55% of the length of a sliding side face of the gasket, and the diameter of the linear portion which expands substantially linearly toward a back end of the syringe barrel has a diameter expansion ratio X between a minimum diameter r (mm) and a maximum diameter R (mm) of 0.1 to 8.0%.Type: ApplicationFiled: August 29, 2013Publication date: March 6, 2014Applicant: Sumitomo Rubber Industries, LTD.Inventors: Katsushi MAEDA, Eiji YAO
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Publication number: 20130053786Abstract: The present invention aims to provide a gasket for a pre-filled syringe which has excellent air-tightness and liquid-tightness and a mold for forming the gasket. The present invention relate to a mold for a gasket laminated with an inactive film for a pre-filled syringe, wherein at least a surface of the mold which forms a seal sliding surface of an annular protrusion of the gasket is mirror finished to have an arithmetic mean roughness Ra of less than 0.03 ?m.Type: ApplicationFiled: August 30, 2012Publication date: February 28, 2013Inventors: Katsushi MAEDA, Junji Tashiro, Hiroaki Nakano, Eiji Yao
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Publication number: 20110266249Abstract: Disclosed is a closure device for a container, which seals an opening (6) that opens at the top of a container (2) and has a rim (7) on its periphery. The closure device comprises a seal member (8) that is to cover the opening (6) on the top of the container (2), and a synthetic resin cap (9) that is to press the seal member (8) against the upper surface of the rim (7). The seal member (8) comprises a flange (10) to be mounted on the upper surface of the rim (7). The cap (9) comprises a top wall (15), a cylinder part (16), and a locking part (18). The top wall (15) is to be disposed above the flange (10). The cylinder part (16) hangs down from the outer circumference of the top wall (15). The locking part (18) is disposed on the inner surface of the cylinder part (16). After the cap (9) is pushed down, the locking part (18) locks at the under surface of the rim (7). The upper surface of the flange (10) has a compressible projection (29).Type: ApplicationFiled: April 29, 2011Publication date: November 3, 2011Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Masahiro KAKUTANI, Norikazu MIYAMOTO, Tomohito SHIRAI, Katsushi MAEDA, Eiji YAO
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Patent number: D643720Type: GrantFiled: October 12, 2010Date of Patent: August 23, 2011Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Katsushi Maeda, Eiji Yao
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Patent number: D644104Type: GrantFiled: October 12, 2010Date of Patent: August 30, 2011Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Katsushi Maeda, Eiji Yao
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Patent number: D686322Type: GrantFiled: November 16, 2012Date of Patent: July 16, 2013Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Katsushi Maeda, Eiji Yao, Shinya Iwano