Patents by Inventor Youichi Nishimuro
Youichi Nishimuro 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: 20160193876Abstract: A non-pneumatic tire is provided including an attachment body attached to an axle, a ring member including an inner tubular body mounted onto the attachment body and an outer tubular body configured to surround the inner tubular body from the outside in a tire radial direction, and a plurality of connecting members disposed between the inner tubular body and the outer tubular body in a tire circumferential direction and configured to connect the tubular bodies to each other, wherein at least a portion of the ring member and the plurality of connecting members are integrally formed of a synthetic resin material having a breaking elongation of 8.0% or more obtained by a measurement method (23° C.) pursuant to JIS K7161 and a Charpy impact value of 9.4 kJ/m2 or more obtained by a 23° C. Charpy impact test pursuant of ISO 179-1.Type: ApplicationFiled: July 25, 2014Publication date: July 7, 2016Applicant: BRIDGESTONE CORPORATIONInventors: Soichi KYO, Youichi NISHIMURO, Masashi NISHIDA, Akihiko ABE
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Patent number: 7459249Abstract: A cylindrical base for a photosensitive drum composed of a conductive resin composition containing a resin base material and a conductive material mainly containing carbon black, on which base a solvent-using photosensitive layer is directly formed, is characterized in that the resin base material mainly contains a mixed resin wherein (A) a polyester resin and (B) a polycarbonate resin is blended at a ratio (weight ratio) of (A)/(B)=50/50 to 90/10. The base for a photosensitive drum is excellent in chemical resistance, formability, dimensional accuracy, and adhesion to the photosensitive layer, while being excellent in dimensional stability. A photosensitive drum using such a base exhibits good printing performance and excellent durability.Type: GrantFiled: May 20, 2004Date of Patent: December 2, 2008Assignee: Bridgestone CorporationInventors: Takahiro Suzuki, Kunio Machida, Youichi Nishimuro
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Publication number: 20070071923Abstract: A cylindrical base for a photosensitive drum composed of a conductive resin composition containing a resin base material and a conductive material mainly containing carbon black, on which base a solvent-using photosensitive layer is directly formed, is characterized in that the resin base material mainly contains a mixed resin wherein (A) a polyester resin and (B) a polycarbonate resin is blended at a ratio (weight ratio) of (A)/(B)=50/50 to 90/10. The base for a photosensitive drum is excellent in chemical resistance, formability, dimensional accuracy, and adhesion to the photosensitive layer, while being excellent in dimensional stability. A photosensitive drum using such a base exhibits good printing performance and excellent durability.Type: ApplicationFiled: May 20, 2004Publication date: March 29, 2007Inventors: Takahiro Suzuki, Kunio Machida, Youichi Nishimuro
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Patent number: 7029617Abstract: There are disclosed a multi-color injection molding process for producing an ink-jet printer member comprising a plastics substrate and an elastic material layer that are integrally composited, which comprises melt-injecting into a mold in turn, a material for a plastics substrate and an elastic material composed of a thermoplastic elastomer; and an insert molding process for producing the ink-jet printer member mentioned above, which comprises placing in advance, a plastics substrate of a prescribed form in a mold, and melt-injecting an elastic material composed of a thermoplastic elastomer into said plastics substrate. The above processes are well suited for the production of the ink-jet printer member such as an ink tank valve for supplying a recording head with an ink to be filled in an ink chamber, also of a sealing member which is installed at an ink supply port or on the main body of an ink-jet printer and prevents an ink from leaking through the ink supply port or through the recording head.Type: GrantFiled: March 18, 2002Date of Patent: April 18, 2006Assignees: Seiko Epson Corporation, Bridgestone CorporationInventors: Youichi Nishimuro, Kunio Machida, Hisashi Miyazawa, Kazunaga Suzuki
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Patent number: 6824730Abstract: There are disclosed a resin composition which is excellent in rubber elasticity, oil maintainability and adhesivity to a metal, and comprises a thermoplastic elastomer composition comprising a (a1) hydrogenated block copolymer which is obtained by hydrogenating a block copolymer consisting essentially of a polymer block composed principally of a vinyl aromatic compound and a polymer block composed principally of a conjugated diene compound, which has a weight average molecular weight of at least 200,000, in which the polymer block composed principally of a vinyl aromatic compound is polystyrene, and in which the content by weight of the polystyrene moiety contained in the hydrogenated block copolymer is 20 to 40%; a (b1) non-aromatic rubber-softening agent having a kinematic viscosity at 40° C.Type: GrantFiled: February 14, 2001Date of Patent: November 30, 2004Assignee: Bridgestone CorporationInventors: Naruhiko Mashita, Shinichi Toyosawa, Youichi Nishimuro, Yasushi Imai, Tadashi Utsunomiya, Ichiro Akasaka, Youkou Saito
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Patent number: 6748979Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc shaped valve body is equipped further with a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.Type: GrantFiled: February 6, 2003Date of Patent: June 15, 2004Assignee: Bridgestone CorporationInventors: Hisashi Miyazawa, Hirofumi Kikuchi, Youichi Nishimuro, Kunio Machida
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Patent number: 6663975Abstract: There are disclosed a resin composition (I) which comprises 100 parts by weight of (a1) a styrenic thermoplastic elastomer composed of a block copolymer (styrene-ethylene/butylene-styrene block copolymer, styrene-ethylene/propylenestyrene block copolymer), 3 to 50 parts by weight of (b1) an ethylene/(meth) acrylic acid copolymer or an ethylene/(meth)-acrylic ester copolymer each having 5 to 45% by weight of (meth)acrylic acid content, and 50 to 170 parts by weight of (c1) a paraffin base oil; a resin composition (II) which comprises 100 parts by weight of (a2) a styrenic thermoplastic elastomer composed of a block copolymer, 1 to 15 parts by weight of (b2) a maleic anhydride-grafted polyolefin, and 30 to 170 parts by weight of (c2) a paraffin base oil; a gasket material (I) composed of the components (a1), (b1) and (c1); a gasket material (II) composed of the components (a2), (b2) and (c2); and a gasketed cover in which a gasket made of the gasket material (I) or (II) is integrally fitted to a cover body madeType: GrantFiled: September 28, 2000Date of Patent: December 16, 2003Assignee: Bridgestone CorporationInventors: Shinichi Toyosawa, Youichi Nishimuro, Naruhiko Mashita, Kunio Machida
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Publication number: 20030155023Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc shaped valve body is equipped further with a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.Type: ApplicationFiled: February 6, 2003Publication date: August 21, 2003Applicant: Seiko Epson CorporationInventors: Hisashi Miyazawa, Hirofumi Kikuchi, Youichi Nishimuro, Kunio Machida
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Patent number: 6550498Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc shaped valve body is equipped further with a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.Type: GrantFiled: July 20, 2001Date of Patent: April 22, 2003Assignee: Seiko Epson CorporationInventors: Hisashi Miyazawa, Hirofumi Kikuchi, Youichi Nishimuro, Kunio Machida
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Patent number: 6505839Abstract: There are disclosed a first gasketed cover which has excellent sealing properties and comprises a cover body composed of a thermoplastic resin and a gasket composed of a thermoplastic elastomer and integrated with the cover body; a second gasketed cover which has excellent sealing properties and is capable of preventing the generation of noises due the vibration of the cover and which comprises a cover body, a gasket composed of an elastic body and integratedly attached to the cover body, and a member composed of the elastic body of a type same as or different from that in the gasket and integratedly installed on at least part of the cover body plane portion excluding the gasket portion; an electronic equipment cover which is capable of preventing pressure difference between the inside and the outside thereof and which comprises a cover body and a membrane composed of an elastic body and installed on a hole placed on the plane portion of the cover body, in which the cover body is integrated with the membrane;Type: GrantFiled: October 27, 1999Date of Patent: January 14, 2003Assignee: Bridgestone CorporationInventors: Youichi Nishimuro, Shinichi Toyosawa, Kunio Machida
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Publication number: 20020105112Abstract: There are disclosed a multi-color injection molding process for producing an ink-jet printer member comprising a plastics substrate and an elastic material layer that are integrally composited, which comprises melt-injecting into a mold in turn, a material for a plastics substrate and an elastic material composed of a thermoplastic elastomer; and an insert molding process for producing the ink-jet printer member mentioned above, which comprises placing in advance, a plastics substrate of a prescribed form in a mold, and melt-injecting an elastic material composed of a thermoplastic elastomer into said plastics substrate. The above processes are well suited for the production of the ink-jet printer member such as an ink tank valve for supplying a recording head with an ink to be filled in an ink chamber, also of a sealing member which is installed at an ink supply port or on the main body of an ink-jet printer and prevents an ink from leaking through the ink supply port or through the recording head.Type: ApplicationFiled: March 18, 2002Publication date: August 8, 2002Applicant: Seiko Epson CorporationInventors: Youichi Nishimuro, Kunio Machida, Hisashi Miyazawa, Kazunaga Suzuki
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Publication number: 20020089083Abstract: There are disclosed a multi-color injection molding process for producing an ink-jet printer member comprising a plastics substrate and an elastic material layer that are integrally composited, which comprises melt-injecting into a mold in turn, a material for a plastics substrate and an elastic material composed of a thermoplastic elastomer; and an insert molding process for producing the ink-jet printer member mentioned above, which comprises placing in advance, a plastics substrate of a prescribed form in a mold, and melt-injecting an elastic material composed of a thermoplastic elastomer into said plastics substrate. The above processes are well suited for the production of the ink-jet printer member such as an ink tank valve for supplying a recording head with an ink to be filled in an ink chamber, also of a sealing member which is installed at an ink supply port or on the main body of an ink-jet printer and prevents an ink from leaking through the ink supply port or through the recording head.Type: ApplicationFiled: March 18, 2002Publication date: July 11, 2002Applicant: Seiko Epson CorporationInventors: Youichi Nishimuro, Kunio Machida, Hisashi Miyazawa, Kazunaga Suzuki
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Patent number: 6399696Abstract: There are disclosed a thermoplastic elastomer composition which comprises (a) a hydrogenated block copolymer obtained by hydrogenating the block copolymer comprising at least one polymer block composed principally of a vinylic aromatic compound and at least one polymer block composed principally of a conjugated diene compound; (b) a non-aromatic base softening agent having a kinematic viscosity at 40° C.Type: GrantFiled: February 17, 2000Date of Patent: June 4, 2002Assignee: Bridgestone CorporationInventors: Shinichi Toyosawa, Youichi Nishimuro, Kunio Machida, Takashi Shimizu, Naruhiko Mashita, Yasunori Fukuda, Jun Arai, Yasushi Imai, Tadashi Utsunomiya
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Patent number: 6394137Abstract: There is disclosed a fluid supply value comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc-shaped valve body is equipped further with a thin-walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.Type: GrantFiled: June 11, 1999Date of Patent: May 28, 2002Assignee: Seiko Epson CorporationInventors: Hirofumi Kikuchi, Youichi Nishimuro, Kunio Machida
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Patent number: 6383436Abstract: A multi-color injection molding process for producing an ink-jet printer member having a plastic substrate and an elastic material layer that are integrally composited, by melt-injecting into a mold in turn, a material for a plastic substrate and an elastic material composed of a thermoplastic elastomer. The above process is well suited for the production of the ink-jet printer member such as an ink tank valve for supplying a recording head with an ink to be filled in an ink chamber, also of a sealing member which is installed at an ink supply port or on the main body of an ink-jet printer and prevents an ink from leaking through the ink supply port or through the recording head.Type: GrantFiled: October 29, 1998Date of Patent: May 7, 2002Assignees: Seiko Epson Corporation, Bridgestone CorporationInventors: Youichi Nishimuro, Kunio Machida, Hisashi Miyazawa, Kazunaga Suzuki
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Publication number: 20020050298Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a riqid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc-shaped valve body is equipped further with a thin-walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.Type: ApplicationFiled: June 11, 1999Publication date: May 2, 2002Inventors: HIROFUMI KIKUCHI, YOUICHI NISHIMURO, KUNIO MACHIDA, HISASHI MIYAZAWA
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Publication number: 20020050692Abstract: There are disclosed a first gasketed cover which has excellent sealing properties and comprises a cover body composed of a thermoplastic resin and a gasket composed of a thermoplastic elastomer and integrated with the cover body; a second gasketed cover which has excellent sealing properties and is capable of preventing the generation of noises due the vibration of the cover and which comprises a cover body, a gasket composed of an elastic body and integratedly attached to the cover body, and a member composed of the elastic body of a type same as or different from that in the gasket and integratedly installed on at least part of the cover body plane portion excluding the gasket portion; an electronic equipment cover which is capable of preventing pressure difference between the inside and the outside thereof and which comprises a cover body and a membrane composed of an elastic body and installed on a hole placed on the plane portion of the cover body, in which the cover body is integrated with the membrane;Type: ApplicationFiled: December 17, 2001Publication date: May 2, 2002Applicant: Bridgestone CorporationInventors: Youichi Nishimuro, Shinichi Toyosawa, Kunio Machida
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Publication number: 20010050108Abstract: There is disclosed a fluid supply valve comprising a disc-shaped valve body which is equipped with a fluid supply port in the central portion thereof and composed of an elastic material whose peripheral portion is reinforced and fixed with a rigid material, the fluid supply port being closed when the valve body abuts against a fixed valve seat placed so as to be opposite to the fluid supply port, and being opened when the valve body is separated from the fixed valve seat, wherein the disc shaped valve body is equipped further with a thin walled portion in the intermediate annular portion between the fluid supply port and the peripheral portion in the radial direction, and/or with an inflectional portion in the radial direction between the fluid supply port and the peripheral portion.Type: ApplicationFiled: July 20, 2001Publication date: December 13, 2001Applicant: Bridgestone CorporationInventors: Hirofumi Kikuchi, Youichi Nishimuro, Kunio Machida
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Publication number: 20010018490Abstract: There are disclosed a resin composition which is excellent in rubber elasticity, oil maintainability and adhesivity to a metal, and comprises a thermoplastic elastomer composition comprising a (a1) hydrogenated block copolymer which is obtained by hydrogenating a block copolymer consisting essentially of a polymer block composed principally of a vinyl aromatic compound and a polymer block composed principally of a conjugated diene compound, which has a weight average molecular weight of at least 200,000, in which the polymer block composed principally of a vinyl aromatic compound is polystyrene, and in which the content by weight of the polystyrene moiety contained in the hydrogenated block copolymer is 20 to 40% ; a (b1) non-aromatic rubber-softening agent having a kinematic viscosity at 40° C.Type: ApplicationFiled: February 14, 2001Publication date: August 30, 2001Inventors: Naruhiko Mashita, Shinichi Toyosawa, Youichi Nishimuro, Yasushi Imai, Tadashi Utsunomiya, Ichiro Akasaka, Youkou Saito
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Patent number: 6221547Abstract: The invention relates to a photosensitive drum based on a cylindrical base which is made with an electrically conductive resin composition which comprises a polyamide resin as the resin component and an electrically conductive material, said polyamide resin being one selected from the group consisting of polyamide resins obtained from m-xylylenediamine and adipic acid, polyamide resins obtained from &egr;-caprolactam, and mixtures thereof. The cylindrical base for the photosensitive drum has good surface smoothness as well as good mechanical strength, and it can be obtained easily by injection molding or the like from said resin composition.Type: GrantFiled: August 30, 1999Date of Patent: April 24, 2001Assignee: Bridgestone CorporationInventors: Munenori Iizuka, Youichi Nishimuro, Kunio Machida