Patents by Inventor Yoshiki Ikeyama
Yoshiki Ikeyama 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: 9630150Abstract: The present invention provides a porous polytetrafluoroethylene membrane having a surface coated with a liquid-repellent agent. In this porous polytetrafluoroethylene membrane, the liquid-repellent agent is a polymer obtained by polymerization of monomers consisting essentially of CH2?CHCOOCH2CH2C6F13. This porous polytetrafluoroethylene membrane is suitable for use as a gas-permeable membrane that allows passage of gases but prevents entry of liquids and/or dust, specifically as a waterproof sound-transmitting membrane, a waterproof gas-permeable membrane, or a dustproof gas-permeable membrane.Type: GrantFiled: July 26, 2013Date of Patent: April 25, 2017Assignee: NITTO DENKO CORPORATIONInventors: Masaaki Mori, Yoshiki Ikeyama
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Patent number: 9528622Abstract: A ventilation member is configured to be attached to an opening portion of a housing, and includes: an inner member configured to be fitted to the opening portion and including a tubular portion having a through hole configured to serve as a part of a ventilation path between a space inside the housing and a space outside the housing; and an outer member mounted to the inner member and covering a water-proof gas-permeable membrane attached so as to close an opening of the through hole. The inner member and the outer member have an exposed surface subjected to liquid-repellent treatment.Type: GrantFiled: November 19, 2013Date of Patent: December 27, 2016Assignee: NITTO DENKO CORPORATIONInventors: Kyoko Ishii, Youzou Yano, Yoshiki Ikeyama
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Patent number: 9508971Abstract: A gas-permeable filter provided with oil repellency is provided. The gas-permeable filter includes a porous membrane having a surface coated with an oil-repellent agent. The oil-repellent agent includes a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, and the porous membrane is a stretched polytetrafluoroethylene (PTFE) porous membrane. Here, R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. The gas-permeable filter is provided with oil repellency without significant reduction in gas permeability.Type: GrantFiled: February 24, 2012Date of Patent: November 29, 2016Assignee: NITTO DENKO CORPORATIONInventors: Yoshiki Ikeyama, Nobuaki Maruoka, Naofumi Kosaka, Asuka Onohara
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Patent number: 9255209Abstract: Provided is an air-permeable sheet imparted with oil repellency, having a surface coated with an oil-repellent agent. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. The air-permeable sheet is a resin sheet having air permeability in a thickness direction of the resin sheet, the resin sheet is a non-porous sheet having two or more through holes formed to extend in the thickness direction, and the through holes are straight holes extending straight through the resin sheet. This air-permeable sheet is imparted with oil repellency without significantly reducing its air permeability.Type: GrantFiled: April 2, 2013Date of Patent: February 9, 2016Assignee: Nitto Denko CorporationInventors: Yoshiki Ikeyama, Junichi Moriyama
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Patent number: 9254467Abstract: Disclosed is an air-permeable filter with an adhesive layer. This air-permeable filter is imparted with oil repellency and includes: a porous membrane having a surface coated with an oil-repellent agent; and an adhesive layer disposed on the surface. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by (1) —R1C5F10CH2C4F9 or (2) —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. This air-permeable filter is imparted with oil repellency without significantly reducing its adhesive strength to the adhesive layer.Type: GrantFiled: April 2, 2013Date of Patent: February 9, 2016Assignee: Nitto Denko CorporationInventors: Nobuaki Maruoka, Yoshiki Ikeyama, Ryota Masuda, Asuka Onohara
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Patent number: 9168472Abstract: Disclosed is an air-permeable film imparted with oil repellency, including a porous body having a surface coated with an oil-repellent agent. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group, and the porous body is a porous formed body composed of ultra-high molecular weight polyethylene fine particles that are bound together. This air-permeable film is imparted with oil repellency without significantly reducing its air permeability.Type: GrantFiled: April 2, 2013Date of Patent: October 27, 2015Assignee: Nitto Denko CorporationInventor: Yoshiki Ikeyama
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Publication number: 20150238909Abstract: The present invention provides a porous polytetrafluoroethylene membrane having a surface coated with a liquid-repellent agent. In this porous polytetrafluoroethylene membrane, the liquid-repellent agent is a polymer obtained by polymerization of monomers consisting essentially of CH2=CHCOOCH2CH2C6F13. This porous polytetrafluoroethylene membrane is suitable for use as a gas-permeable membrane that allows passage of gases but prevents entry of liquids and/or dust, specifically as a waterproof sound-transmitting membrane, a waterproof gas-permeable membrane, or a dustproof gas-permeable membrane.Type: ApplicationFiled: July 26, 2013Publication date: August 27, 2015Inventors: Masaaki Mori, Yoshiki Ikeyama
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Publication number: 20150217220Abstract: A gas-permeable filter of the present invention has a surface coated with an oil-repellent agent. The oil-repellent agent contains a copolymer of a linear fluorine-containing hydrocarbon group-containing monomer and a crosslinkable monomer. The crosslinkable monomer contains at least one selected from an alkoxy group-containing monomer, a hydroxy group-containing monomer, and a carboxyl group-containing monomer.Type: ApplicationFiled: August 22, 2013Publication date: August 6, 2015Inventors: Yoshiki Ikeyama, Nobuaki Marouka, Ryota Masuda, Asuka Onohara
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Publication number: 20150166820Abstract: Provided is an air-permeable sheet imparted with oil repellency, having a surface coated with an oil-repellent agent. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. The air-permeable sheet is a resin sheet having air permeability in a thickness direction of the resin sheet, the resin sheet is a non-porous sheet having two or more through holes formed to extend in the thickness direction, and the through holes are straight holes extending straight through the resin sheet. This air-permeable sheet is imparted with oil repellency without significantly reducing its air permeability.Type: ApplicationFiled: April 2, 2013Publication date: June 18, 2015Inventors: Yoshiki Ikeyama, Junichi Moriyama
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Publication number: 20150089911Abstract: Disclosed is an air-permeable film imparted with oil repellency, including a porous body having a surface coated with an oil-repellent agent. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group, and the porous body is a porous formed body composed of ultra-high molecular weight polyethylene fine particles that are bound together. This air-permeable film is imparted with oil repellency without significantly reducing its air permeability.Type: ApplicationFiled: April 2, 2013Publication date: April 2, 2015Inventor: Yoshiki Ikeyama
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Publication number: 20150082984Abstract: Disclosed is an air-permeable filter with an adhesive layer. This air-permeable filter is imparted with oil repellency and includes: a porous membrane having a surface coated with an oil-repellent agent; and an adhesive layer disposed on the surface. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by (1) —R1C5F10CH2C4F9 or (2) —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. This air-permeable filter is imparted with oil repellency without significantly reducing its adhesive strength to the adhesive layer.Type: ApplicationFiled: April 2, 2013Publication date: March 26, 2015Inventors: Nobuaki Maruoka, Yoshiki Ikeyama, Ryota Masuda, Asuka Onohara
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Patent number: 8821226Abstract: A vent member (1) includes a support body (2) provided with a through-hole (3), a permeable membrane (6) closing the through-hole (3) in the support body (2), and a cover part (10) covering the permeable membrane (6). A ventilation hole (10a) is made in a ceiling portion (11) of the cover part (10) and a notch (10b) is made in a side wall portion (12) thereof. These ventilation hole (10a) and notch (10b) function as a passage for ventilation between the interior and the exterior of the cover part (10). The ventilation hole (10a) establishes a positional relation that it does not overlap a permeable region of the permeable membrane (6) in the axial direction. Further, the side wall portion (12) extends to the lower side in the axial direction below a position at which the permeable membrane (6) is disposed, and the permeable membrane (6) is protected entirely along a circumferential direction by the side wall portion (12).Type: GrantFiled: November 15, 2006Date of Patent: September 2, 2014Assignee: Nitto Denko CorporationInventors: Youzou Yano, Yuuta Shimazaki, Toshimasa Nishimori, Yuuki Sugou, Yoshiki Ikeyama
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Publication number: 20140137739Abstract: A ventilation member is configured to be attached to an opening portion of a housing, and includes: an inner member configured to be fitted to the opening portion and including a tubular portion having a through hole configured to serve as a part of a ventilation path between a space inside the housing and a space outside the housing; and an outer member mounted to the inner member and covering a water-proof gas-permeable membrane attached so as to close an opening of the through hole. The inner member and the outer member have an exposed surface subjected to liquid-repellent treatment.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Applicant: NITTO DENKO CORPORATIONInventors: Kyoko ISHII, Youzou YANO, Yoshiki IKEYAMA
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Publication number: 20140023895Abstract: A gas-permeable filter provided with oil repellency is provided. The gas-permeable filter includes a porous membrane having a surface coated with an oil-repellent agent. The oil-repellent agent includes a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, and the porous membrane is a stretched polytetrafluoroethylene (PTFE) porous membrane. Here, R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. The gas-permeable filter is provided with oil repellency without significant reduction in gas permeability.Type: ApplicationFiled: February 24, 2012Publication date: January 23, 2014Applicant: NITTO DENKO CORPORATIONInventors: Yoshiki Ikeyama, Nobuaki Maruoka, Naofumi Kosaka, Asuka Onohara
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Patent number: 8178023Abstract: A ventilation filter part 19 including a support body 27 and a ventilation filter 25 fixed to the support body 27 is disposed in a concave portion 44c in a stationary die 44. A movable die 40 is brought into close proximity to the stationary die 44 and these dies are clamped together. Resin is injected into a cavity CV defined therebetween as a result of the clamping to make the injected resin and the ventilation filter part 19 into one piece. A housing upper portion 13 (housing part) formed of the ventilation filter part 19 and the injected resin is thus molded.Type: GrantFiled: November 15, 2006Date of Patent: May 15, 2012Assignee: Nitto Denko CorporationInventor: Yoshiki Ikeyama
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Patent number: 8141678Abstract: A sound-permeable film (11) includes: a porous membrane (13) that contains polytetrafluoroethylene as its main component, allows sound to pass therethrough, and prevents an foreign object such as a water drop from passing therethrough; and a heat-resistant double-sided adhesive sheet (15) that is disposed on a part of at least one of main surfaces of the porous membrane (13).Type: GrantFiled: September 11, 2006Date of Patent: March 27, 2012Assignee: Nitto Denko CorporationInventors: Yoshiki Ikeyama, Yuri Horie, Kouji Furuuchi
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Publication number: 20090267252Abstract: A ventilation filter part 19 including a support body 27 and a ventilation filter 25 fixed to the support body 27 is disposed in a concave portion 44c in a stationary die 44. A movable die 40 is brought into close proximity to the stationary die 44 and these dies are clamped together. Resin is injected into a cavity CV defined therebetween as a result of the clamping to make the injected resin and the ventilation filter part 19 into one piece. A housing upper portion 13 (housing part) formed of the ventilation filter part 19 and the injected resin is thus molded.Type: ApplicationFiled: November 15, 2006Publication date: October 29, 2009Applicant: NITTO DENKO CORPORATIONInventor: Yoshiki Ikeyama
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Publication number: 20090268928Abstract: A sound-permeable film (11) includes: a porous membrane (13) that contains polytetrafluoroethylene as its main component, allows sound to pass therethrough, and prevents an foreign object such as a water drop from passing therethrough; and a heat-resistant double-sided adhesive sheet (16) that is disposed on a part of at least one of main surfaces of the porous membrane (13).Type: ApplicationFiled: September 11, 2006Publication date: October 29, 2009Applicant: Nitto Denko CorporationInventors: Yoshiki Ikeyama, Yuri Horie, Kouji Furuuchi
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Publication number: 20090047890Abstract: A vent member (1) includes a support body (2) provided with a through-hole (3), a permeable membrane (6) closing the through-hole (3) in the support body (2), and a cover part (10) covering the permeable membrane (6). A ventilation hole (10a) is made in a ceiling portion (11) of the cover part (10) and a notch (10b) is made in a side wall portion (12) thereof. These ventilation hole (10a) and notch (10b) function as a passage for ventilation between the interior and the exterior of the cover part (10). The ventilation hole (10a) establishes a positional relation that it does not overlap a permeable region of the permeable membrane (6) in the axial direction. Further, the side wall portion (12) extends to the lower side in the axial direction below a position at which the permeable membrane (6) is disposed, and the permeable membrane (6) is protected entirely along a circumferential direction by the side wall portion (12).Type: ApplicationFiled: November 15, 2006Publication date: February 19, 2009Applicant: NITTO DENKO CORPORATIONInventors: Youzou Yano, Yuuta Shimazaki, Toshimasa Nishimori, Yuuki Sugou, Yoshiki Ikeyama
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Patent number: 6994621Abstract: A ventilation member having: a breathable film transmitting gas passing through an opening portion of a housing in a state in which the breathable film is fixed to the opening portion; and a support including a supporting portion for supporting the breathable film and an insertion portion to be inserted into the opening portion of the housing; wherein the insertion portion has a lock portion in an insertion-start-side end portion thereof, the lock portion having a tapered forward end, while the insertion portion is divided into a plurality of parts circumferentially at least on an insertion start side thereof.Type: GrantFiled: May 15, 2003Date of Patent: February 7, 2006Assignee: Nitto Denko CorporationInventors: Hiroaki Mashiko, Toshiki Yanagi, Hiroyuki Nishii, Yoshiki Ikeyama