Patents by Inventor Nobuaki Maruoka

Nobuaki Maruoka 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).

  • Publication number: 20180001274
    Abstract: The purpose of the present invention is to provide a composite semipermeable membrane whose water permeability is hard to decline even when exposed to high temperature environment for a long period of time, a spiral wound separation membrane element using the composite semipermeable membrane, and a method for producing the same. Another purpose of the invention is to provide a method for evaluating water permeation performance of a composite semipermeable membrane, which method evaluates whether the water permeability of a composite semipermeable membrane is likely to decline due to heat, by a simple evaluation method. The composite semipermeable membrane having a skin layer that includes a polyamide resin, the skin layer being placed on a porous support and having an elastic modulus of 100 MPa or more, calculated by AFM force curve measurement in water.
    Type: Application
    Filed: January 20, 2016
    Publication date: January 4, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazusa MATSUI, Nobuaki MARUOKA
  • Patent number: 9508971
    Abstract: 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: Grant
    Filed: February 24, 2012
    Date of Patent: November 29, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiki Ikeyama, Nobuaki Maruoka, Naofumi Kosaka, Asuka Onohara
  • Publication number: 20160280967
    Abstract: This invention provides a surface protection sheet that allows for easy application to an adherend surface with good removability. The surface protection sheet provided by this invention comprises a PSA layer and a support substrate supporting the PSA layer. The surface protection sheet has a peel strength (SA) after adhered to a stainless steel plate and stored at 23° C. for 30 minutes, and a peel strength (SB) after adhered on a stainless steel plate and stored at 70° C. for 168 hours, at a peel strength ratio (SB/SA) of 5 or less. The surface protection sheet has a peel strength to itself of 5 N/25 mm or less when the PSA layer is adhered to itself and peeled apart after one minute.
    Type: Application
    Filed: October 1, 2014
    Publication date: September 29, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Natsuki UKEI, Izumi NISHIMURA, Chie MATSUMOTO, Mika OKADA, Nobuaki MARUOKA
  • Patent number: 9254467
    Abstract: 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: Grant
    Filed: April 2, 2013
    Date of Patent: February 9, 2016
    Assignee: Nitto Denko Corporation
    Inventors: Nobuaki Maruoka, Yoshiki Ikeyama, Ryota Masuda, Asuka Onohara
  • Publication number: 20150082984
    Abstract: 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: Application
    Filed: April 2, 2013
    Publication date: March 26, 2015
    Inventors: Nobuaki Maruoka, Yoshiki Ikeyama, Ryota Masuda, Asuka Onohara
  • Publication number: 20140023895
    Abstract: 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: Application
    Filed: February 24, 2012
    Publication date: January 23, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiki Ikeyama, Nobuaki Maruoka, Naofumi Kosaka, Asuka Onohara
  • Publication number: 20130022734
    Abstract: In the method for producing a medical pressure-sensitive adhesive tape or sheet of the invention, a water dispersion-type copolymer solution having a specific composition is used. Therefore, the problem caused by high thixotropy can be eliminated and a pressure-sensitive adhesive layer can be relatively easily formed on a porous substrate by a direct method. In addition, when the medical pressure-sensitive adhesive tape or sheet obtained by the method of the invention is attached to the skin surface, skin adhesion and tube fixing are excellent and at the same time, irritation to skin is low.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tatsuya MURATA, Noriyuki KIKUTA, Atsushi HAMADA, Tomonari NAITO, Nobuaki MARUOKA
  • Publication number: 20100319151
    Abstract: A cleaning sheet for cleaning foreign matters away from the interior of the substrate processing equipment is provided. The cleaning sheet includes a cleaning layer having substantially no tackiness and having a tensile modulus of not lower than 0.98 N/mm2 as determined according to JIS K7127. Alternatively, the cleaning sheet includes a cleaning layer having a Vickers hardness of not lower than 10 MPa.
    Type: Application
    Filed: August 6, 2010
    Publication date: December 23, 2010
    Applicant: NITTO DENKKO CORPORATION
    Inventors: Makoto Namikawa, Yoshio Terada, Jirou Nukaga, Eiji Toyoda, Hirofumi Fujii, Daisuke Uenda, Asami Funatsu, Nobuaki Maruoka, Hitoshi Ishizaka, Yasuhiro Amano
  • Patent number: 7793668
    Abstract: A cleaning sheet for cleaning foreign matters away from the interior of the substrate processing equipment is provided. The cleaning sheet includes a cleaning layer having substantially no tackiness and having a tensile modulus of not lower than 0.98 N/mm2 as determined according to JIS K7127. Alternatively, the cleaning sheet includes a cleaning layer having a Vickers hardness of not lower than 10 MPa.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: September 14, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Makoto Namikawa, Yoshio Terada, Jirou Nukaga, Eiji Toyoda, Hirofumi Fujii, Daisuke Uenda, Asami Funatsu, Nobuaki Maruoka, Hitoshi Ishizaka, Yasuhiro Amano
  • Publication number: 20060105164
    Abstract: A cleaning sheet for cleaning foreign matters away from the interior of the substrate processing equipment is provided. The cleaning sheet includes a cleaning layer having substantially no tackiness and having a tensile modulus of not lower than 0.98 N/mm2 as determined according to JIS K7127. Alternatively, the cleaning sheet includes a cleaning layer having a Vickers hardness of not lower than 10 MPa.
    Type: Application
    Filed: September 20, 2005
    Publication date: May 18, 2006
    Inventors: Makoto Namikawa, Yoshio Terada, Jirou Nukaga, Eiji Toyoda, Hirofumi Fujii, Daisuke Uenda, Asami Funatsu, Nobuaki Maruoka, Hitoshi Ishizaka, Yasuhiro Amano
  • Publication number: 20060005337
    Abstract: A cleaning member comprising a cleaning layer which is non-adhesive at the temperature range of 25 to 200° C. and has a tensile elastic modulus (Young's modulus) of 3,000 MPa or less, particularly preferably 100 MPa or less, a cleaning sheet having the above cleaning layer as such a cleaning member, or a carrying member with a cleaning function having the above cleaning layer on the carrying member.
    Type: Application
    Filed: July 8, 2005
    Publication date: January 12, 2006
    Inventors: Yoshio Terada, Nobuaki Maruoka
  • Publication number: 20050244632
    Abstract: A cleaning sheet for cleaning foreign matters away from the interior of the substrate processing equipment is provided. The cleaning sheet includes a cleaning layer having substantially no tackiness and having a tensile modulus of not lower than 0.98 N/mm2 as determined according to JIS K7127. Alternatively, the cleaning sheet includes a cleaning layer having a Vickers hardness of not lower than 10 MPa.
    Type: Application
    Filed: December 20, 2004
    Publication date: November 3, 2005
    Inventors: Makoto Namikawa, Yoshio Terada, Jirou Nukaga, Eiji Toyoda, Hirofumi Fujii, Daisuke Uenda, Asami Funatsu, Nobuaki Maruoka, Hitoshi Ishizaka, Yasuhiro Amano