Patents by Inventor Kunio Ito

Kunio Ito 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).

  • Patent number: 11982368
    Abstract: Provided is a piezoelectric actuator that can reduce a risk of air leakage due to weakening of pressing force of a valve element against a valve seat surface and airtightness. The piezoelectric actuator is used for a piezoelectric valve that opens and closes a valve utilizing displacement of a laminated piezoelectric element. The piezoelectric actuator includes: a valve element; a laminated piezoelectric element that generates a driving force, required for operation of the valve element, as a displacement; and a displacement enlargement mechanism that enlarges a displacement of a laminated piezoelectric element and causes the enlarged displacement to act on the valve element. In the piezoelectric actuator, a surface of the valve element to be in contact with a valve seat of the piezoelectric valve is made flat and smooth in a state in which a tensile load is applied to the laminated piezoelectric element.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 14, 2024
    Assignees: SATAKE CORPORATION, MECHANO TRANSFORMER CORPORATION
    Inventors: Takafumi Ito, Tadashi Matsushita, Toshiro Higuchi, Sze Keat Chee, Kunio Ebihara, Toshitada Hirata
  • Publication number: 20240100586
    Abstract: A metal fiber for fiber reinforced concrete includes a linear main body that extends in an X-Y plane, having width in a Y direction, a length in an X direction, and a thickness in a Z direction within a three dimensional space defined by X, Y, and Z axes which are perpendicular to each other. Ends of the linear main body are bent portions which are bent at an obtuse angle in the Z direction. An elongate metal plate is intermittently conveyed in the Y direction on a die of a pressing machine at a pitch corresponding to the width of the metal fiber in the Y direction. The leading end of the metal plate is sheared to cut out and produce the metal fiber.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 28, 2024
    Inventor: Kunio ITO
  • Patent number: 11927225
    Abstract: A sliding spline shaft device of the present invention includes a male spline and a female spline that is fitted to the male spline in an axially slidable manner, and at least one of the splines has a surface processed layer. The surface processed layer includes an undercoat layer, an intermediate layer containing phosphate, and a topcoat layer containing solid lubricant, in this order. The undercoat layer contains iron nitride and/or iron carbide. Thus, the surface of a base material has high hardness. As a result, microscopic deformation of the sliding surface is reduced, and increase in a real contact area is suppressed, whereby stick-slip is prevented.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: March 12, 2024
    Assignees: NISSAN MOTOR CO., LTD., NIHON PARKERIZING CO., LTD.
    Inventors: Shigetoshi Kashiwabara, Kunio Katada, Shunsuke Hiraiwa, Akihumi Kawaguchi, Takeo Nishijima, Shinichi Suzuki, Yasuyuki Katsumada, Makoto Nakajima, Tokunori Kodama, Masato Ito, Aiki Iwasa
  • Publication number: 20200005754
    Abstract: Vibration damping and sound absorbing foam formed of foam and fine particles present inside the foam so as to form bell-like structures in the foam is produced by performing the following steps [I] to [III] in the stated order. [I] Producing fine particles each having a surface coated with a coating material capable of being dissolved in at least one liquid selected from water and a solvent. [II] Mixing the coated fine particles into a material for foam, and producing foam from the mixture. [III] Immersing the foam in at least one liquid selected from water and a solvent to remove the coating of each of the fine particles in the foam by dissolution in the liquid.
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Applicant: Sumitomo Riko Company Limited
    Inventors: Kunio Ito, Motoshige Hibino, Takahiro Kachi, Shinsuke Asai, Keiichi Muratani
  • Publication number: 20190358871
    Abstract: Vibration damping and sound absorbing foam formed of foam and fine particles present inside the foam so as to form bell-like structures having communication paths to a surface of the foam is produced by performing the following steps [I] to [III] in the stated order. [I] Preparing foam having foamed cells inside the foam and having communication paths to the foamed cells on a surface thereof, and fine particles each having a particle diameter smaller than a cell diameter of each of the foamed cells and larger than a diameter of each of the communication paths. [II] Swelling the foam to enlarge the diameter of each of the communication paths, and then sprinkling the surface of the foam with the fine particles, followed by pushing of the fine particles into the foamed cells via the communication paths with a fluid pressure of a liquid. [III] Drying the foam.
    Type: Application
    Filed: August 6, 2019
    Publication date: November 28, 2019
    Applicant: Sumitomo Riko Company Limited
    Inventors: Kunio Ito, Motoshige Hibino, Takahiro Kachi, Shinsuke Asai, Keiichi Muratani
  • Patent number: 10203626
    Abstract: Provided is a charging roll for an electrophotographic apparatus, which includes a surface layer that suppresses bleeding of a base layer component and achieves uniform resistance by improving the dispersibility of a conductive agent. A charging roll for an electrophotographic apparatus includes a shaft body, an elastic layer that is formed on the outer circumference of the shaft body, and a surface layer that is formed on the outer circumference of the elastic layer, wherein the surface layer contains the following components (A)-(D), i.e., at least one resin (A) selected from among fluororesins and fluorine-modified acrylic resins, a carbon black (B), an ester-based polymer dispersant (C) and a sulfonic acid-based dispersant (D).
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: February 12, 2019
    Assignee: Sumitomo Riko Company Limited
    Inventors: Kunio Ito, Masanori Satoh
  • Publication number: 20180321609
    Abstract: Provided is a charging roll for an electrophotographic apparatus, which includes a surface layer that suppresses bleeding of a base layer component and achieves uniform resistance by improving the dispersibility of a conductive agent. A charging roll for an electrophotographic apparatus includes a shaft body, an elastic layer that is formed on the outer circumference of the shaft body, and a surface layer that is formed on the outer circumference of the elastic layer, wherein the surface layer contains the following components (A)-(D), i.e., at least one resin (A) selected from among fluororesins and fluorine-modified acrylic resins, a carbon black (B), an ester-based polymer dispersant (C) and a sulfonic acid-based dispersant (D).
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Kunio ITO, Masanori SATOH
  • Patent number: 10095156
    Abstract: Provided is a conductive foam roll having a high surface opening ratio that achieves both cleaning performance and low resistance. A conductive foam roll 10 includes a shaft body 12 and a conductive foam layer 14 around the shaft body 12, wherein the conductive foam layer 14 has a surface opening ratio of 50% to 90%, and wherein the conductive foam layer 14 contains an ionic conductive agent that contains salt of diallyl-type ammonium cations, and at least one selected from the group consisting of N,N-bis(trifluoromethanesulfonyl)imide anions, and N,N-bis(fluorosulfonyl)imide anions.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 9, 2018
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kunio Ito, Satoshi Suzuki, Masanari Umeda, Motoharu Ishihara
  • Publication number: 20180231908
    Abstract: To provide a charging roll for an electrophotographic apparatus that is excellent in charging performance while suppressing adhesion of toner particles. A charging roll 10 includes a shaft body 12, an elastic body layer 14 provided on the outer periphery of the shaft body 12, and a surface layer 16 provided on the outer periphery of the elastic body layer 14. The surface layer 16 contains cellulose nanofibers, and has pores generated on the surface thereof due to overlapping of the cellulose nanofibers, and the pores have a diameter of 0.05 to 30 micrometers. The surface layer 16 preferably contains no binder resin or contains a binder resin at a content of 5 mass % or less with respect to the total content of the surface layer 16.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 16, 2018
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kunio Ito, Masanori Satoh
  • Patent number: 10018935
    Abstract: To provide a conductive member for an electrophotographic machine that is capable of preventing hardening degradation of a surface layer that is caused by an ionic conductive agent contained in a conductive rubber elastic body layer, allowing the surface layer to be improved in durability. A conductive member 10 for an electrophotographic machine includes a conductive rubber elastic body layer 14 containing crosslinked rubber and an ionic conductive agent, and a surface layer 16 provided on an outer periphery of the conductive rubber elastic body layer 14, wherein the surface layer 16 contains a polymer and polyphenol. Examples of the polyphenol include a tannin, gallic acid, ellagic acid, pyrogallol, catechin, and chlorogenic acid.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: July 10, 2018
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Masanori Ishida, Takayuki Ootani, Kunio Ito, Keisuke Tokoro
  • Publication number: 20170227881
    Abstract: To provide a conductive member for an electrophotographic machine that is capable of preventing hardening degradation of a surface layer that is caused by an ionic conductive agent contained in a conductive rubber elastic body layer, allowing the surface layer to be improved in durability. A conductive member 10 for an electrophotographic machine includes a conductive rubber elastic body layer 14 containing crossiinked rubber and an ionic conductive agent, and a surface layer 16 provided on an outer periphery of the conductive rubber elastic body layer 14, wherein the surface layer 16 contains a polymer and polyphenol. Examples of the polyphenol include a tannin, gallic acid, ellagic acid, pyrogallol, catechin, and chlorogenic acid.
    Type: Application
    Filed: April 17, 2017
    Publication date: August 10, 2017
    Applicant: Sumitomo Riko Company Limited
    Inventors: Masanori Ishida, Takayuki Ootani, Kunio Ito, Keisuke Tokoro
  • Publication number: 20170075253
    Abstract: Provided is a conductive foam roll having a high surface opening ratio that achieves both cleaning performance and low resistance. A conductive foam roll 10 includes a shaft body 12 and a conductive foam layer 14 around the shaft body 12, wherein the conductive foam layer 14 has a surface opening ratio of 50% to 90%, and wherein the conductive foam layer 14 contains an ionic conductive agent that contains salt of diallyl-type ammonium cations, and at least one selected from the group consisting of N,N-bis(trifluoromethanesulfonyl)imide anions, and N,N-bis(fluorosulfonyl)imide anions.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 16, 2017
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kunio Ito, Satoshi Suzuki, Masanari Umeda, Motoharu Ishihara
  • Publication number: 20150227074
    Abstract: Provided is a conductive composition for use in an electrophotographic apparatus and a conductive roll for use in an electrophotographic apparatus in which resistance reduction can be achieved even when an ion conductive agent is used. A conductive roll 1 includes a shaft 2, and a base layer 3, a surface layer 4, and an intermediate layer 5 that are formed around the shaft 2 and at least one of which contains a conductive composition containing a polar polymer and a conductivity imparting agent that is quaternary ammonium salt represented by the following formula 1: wherein R1 to R3 represent C1 to C14 alkyl groups, R4 represents one of a methacrylate group and an acrylate group, an anion represented by X? is any one of bistrifluoromethanesulfonimide, triflate, and fluorosulfonylimide, and A represents an alkylene group.
    Type: Application
    Filed: April 23, 2015
    Publication date: August 13, 2015
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Kunio Ito, Motoharu Ishihara, Kazunori Tooyama
  • Patent number: 8956650
    Abstract: An intrabuccally rapidly disintegrating tablet which is manufactured by a simple method, has an enough practical hardness and is rapidly disintegrated in the buccal cavity and its production method. The intrabuccally rapidly disintegrating tablet is produced by growing a powder material into a granulated material with a fixed particle diameter, the powder material including a sugar alcohol or a saccharide as main ingredient, each of which is first particle having an average particle diameter of not more than 30 ?m, by mixing thus obtained granulated material with an active ingredient and a disintegrant, and by compressing the mixture into a predetermined shape.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 17, 2015
    Assignee: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Motohiro Ohta, Eiji Hayakawa, Kunio Ito, Sanji Tokuno, Kiyoshi Morimoto, Yasushi Watanabe
  • Patent number: 8945618
    Abstract: An intrabuccally rapidly disintegrating tablet which is manufactured by a simple method, has an enough practical hardness and is rapidly disintegrated in the buccal cavity and its production method. The intrabuccally rapidly disintegrating tablet is produced by growing a powder material into a granulated material with a fixed particle diameter, the powder material including a sugar alcohol or a saccharide as main ingredient, each of which is first particle having an average particle diameter of not more than 30 ?m, by mixing thus obtained granulated material with an active ingredient and a disintegrant, and by compressing the mixture into a predetermined shape.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 3, 2015
    Assignee: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Motohiro Ohta, Eiji Hayakawa, Kunio Ito, Sanji Tokuno, Kiyoshi Morimoto, Yasushi Watanabe
  • Publication number: 20140193496
    Abstract: An intrabuccally rapidly disintegrating tablet which is manufactured by a simple method, has an enough practical hardness and is rapidly disintegrated in the buccal cavity and its production method. The intrabuccally rapidly disintegrating tablet is produced by growing a powder material into a granulated material with a fixed particle diameter, the powder material including a sugar alcohol or a saccharide as main ingredient, each of which is first particle having an average particle diameter of not more than 30 ?m, by mixing thus obtained granulated material with an active ingredient and a disintegrant, and by compressing the mixture into a predetermined shape.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: KYOWA HAKKO KOGYO CO., LTD.
    Inventors: Motohiro OHTA, Eiji HAYAKAWA, Kunio ITO, Sanji TOKUNO, Kiyoshi MORIMOTO, Yasushi WATANABE
  • Patent number: 8357396
    Abstract: An intrabuccally rapidly disintegrating tablet which is manufactured by a simple method, has an enough practical hardness and is rapidly disintegrated in the buccal cavity and its production method. The intrabuccally rapidly disintegrating tablet is produced by growing a powder material into a granulated material with a fixed particle diameter, the powder material including a sugar alcohol or a saccharide as main ingredient, each of which is first particle having an average particle diameter of not more than 30 ?m, by mixing thus obtained granulated material with an active ingredient and a disintegrant, and by compressing the mixture into a predetermined shape.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: January 22, 2013
    Assignee: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Motohiro Ohta, Eiji Hayakawa, Kunio Ito, Sanji Tokuno, Kiyoshi Morimoto, Yasushi Watanabe
  • Publication number: 20120135076
    Abstract: An intrabuccally rapidly disintegrating tablet which is manufactured by a simple method, has an enough practical hardness and is rapidly disintegrated in the buccal cavity and its production method. The intrabuccally rapidly disintegrating tablet is produced by growing a powder material into a granulated material with a fixed particle diameter, the powder material including a sugar alcohol or a saccharide as main ingredient, each of which is first particle having an average particle diameter of not more than 30 ?m, by mixing thus obtained granulated material with an active ingredient and a disintegrant, and by compressing the mixture into a predetermined shape.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 31, 2012
    Inventors: Motohiro OHTA, Eiji Hayakawa, Kunio Ito, Sanji Tokuno, Kiyoshi Morimoto, Yasushi Watanabe
  • Patent number: 8071128
    Abstract: An intrabuccally rapidly disintegrating tablet which is manufactured by a simple method, has an enough practical hardness and is rapidly disintegrated in the buccal cavity and its production method. The intrabuccally rapidly disintegrating tablet is produced by growing a powder material into a granulated material with a fixed particle diameter, the powder material including a sugar alcohol or a saccharide as main ingredient, each of which is first particle having an average particle diameter of not more than 30 ?m, by mixing thus obtained granulated material with an active ingredient and a disintegrant, and by compressing the mixture into a predetermined shape.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: December 6, 2011
    Assignee: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Motohiro Ohta, Eiji Hayakawa, Kunio Ito, Sanji Tokuno, Kiyoshi Morimoto, Yasushi Watanabe
  • Patent number: 7585194
    Abstract: A conductor pin placed between one member and another member and contacting the both members to electrically connect the members to each other. The conductor pin includes a tubular outer pin portion formed by folding a conductive plate material for the outer pin portion, a tubular inner pin portion formed by folding a conductive plate material for the inner pin portion and inserted in the outer pin portion slidably in the axial direction of the outer pin portion, and a conductive spring disposed in the outer pin portion and inserted in the inner pin portion to urge the inner pin portion in a direction in which the inner pin portion projects from the outer pin portion.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: September 8, 2009
    Assignee: Wako Seiki Co., Ltd.
    Inventor: Kunio Ito