Patents by Inventor Mizuho Nagata

Mizuho Nagata 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: 20220025223
    Abstract: A pressure-sensitive adhesive composition contains an adhesive component and gas-generative particles dispersed in the adhesive component. When the gas-generative particles are subjected to particle size distribution measurement, in the particle size distribution of the gas-generative particles, a cumulative particle size (D90) where a cumulative value from the smallest particle size is 90% based on volume is 10.0 ?m or less.
    Type: Application
    Filed: December 9, 2019
    Publication date: January 27, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mizuho NAGATA, Yu TACHIKAWA, Keisuke HIRANO, Kiichiro MATSUSHITA
  • Publication number: 20220017789
    Abstract: A pressure-sensitive adhesive composition includes a pressure-sensitive adhesive component and a gas generating particle dispersed in the pressure-sensitive adhesive component. A tensile elastic modulus at 25° C. of the pressure-sensitive adhesive composition is 5 MPa or less. A gas generation amount at which the gas generating particle is generated in the pressure-sensitive adhesive composition is 5 mL/g or more in terms of decane at 0° C. and 1013 hPa in a solid content of the pressure-sensitive adhesive composition.
    Type: Application
    Filed: November 12, 2019
    Publication date: January 20, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mizuho NAGATA, Yu TACHIKAWA, Keisuke HIRANO, Kiichiro MATSUSHITA
  • Patent number: 10883022
    Abstract: A pressure-sensitive adhesive composition for an optical film, includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including, as a main component, an alkyl (meth)acrylate having an alkyl group of 4 to 18 carbon atoms; and a phosphate ester compound. The pressure-sensitive adhesive composition is capable of forming a pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer that is for use on optical films and makes it possible to suppress an increase in the surface resistance of a transparent conductive layer even when a laminate including a transparent conductive layer and an optical film such as a polarizing plate with the pressure-sensitive adhesive layer interposed therebetween is stored under hot and humid conditions.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: January 5, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Mizuho Nagata, Toshitaka Takahashi, Yousuke Makihata, Kayo Shimokawa, Kenichi Okada, Toshitsugu Hosokawa
  • Patent number: 10570320
    Abstract: Provided is an adhesive member to be adhesively fixed through pressure which has both position adjustability and adhesiveness and is capable of producing a sufficient adhesive strength in addition to the position adjustability. The adhesive member comprises a support, a pressure-sensitive adhesive layer provided on one surface of the support, and a plurality of protrusion elements arranged, in spaced-apart relation to each other, on a principal surface of the pressure-sensitive adhesive layer on a side opposite to the support. Each of the protrusion elements is composed of an aggregation of a plurality of cohesive particles, wherein the adhesive member has a frictional force of 0.4 N/cm2 or less, with respect to a stainless steel plate serving as an adherend, as measured when the protrusion elements are in contact with a surface of the adherend, and a shear adhesive strength of 45 N/cm2 or more.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: February 25, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kensuke Tani, Mizuho Nagata, Kaori Mizobata, Masatsugu Soga, Ryota Masuda, Masayuki Satake, Kenichi Okada, Naofumi Kosaka, Keisuke Shimokita
  • Publication number: 20190016923
    Abstract: Provided is an adhesive member to be adhesively fixed through pressure which has both position adjustability and adhesiveness and is capable of producing a sufficient adhesive strength in addition to the position adjustability. The adhesive member comprises a support, a pressure-sensitive adhesive layer provided on one surface of the support, and a plurality of protrusion elements arranged, in spaced-apart relation to each other, on a principal surface of the pressure-sensitive adhesive layer on a side opposite to the support. Each of the protrusion elements is composed of an aggregation of a plurality of cohesive particles, wherein the adhesive member has a frictional force of 0.4 N/cm2 or less, with respect to a stainless steel plate serving as an adherend, as measured when the protrusion elements are in contact with a surface of the adherend, and a shear adhesive strength of 45 N/cm2 or more.
    Type: Application
    Filed: March 7, 2016
    Publication date: January 17, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kensuke TANI, Mizuho NAGATA, Kaori MIZOBATA, Masatsugu SOGA, Ryota MASUDA, Masayuki SATAKE, Kenichi OKADA, Naofumi KOSAKA, Keisuke SHIMOKITA
  • Publication number: 20170183543
    Abstract: An anchor layer formation composition, a pressure-sensitive adhesive layer-attached optical film, and an image display device are provided, in which the composition includes an oxazoline group-containing polymer and an ionic compound including a cation component and a sulfonyl group-containing anion component and is capable of forming an anchor layer that can improve the adhesion between a pressure-sensitive adhesive layer and an optical film when interposed therebetween, the pressure-sensitive adhesive layer-attached optical film has high durability and good reworkability and allows the pressure-sensitive adhesive layer to resist chipping, and the image display device has the pressure-sensitive adhesive layer-attached optical film.
    Type: Application
    Filed: June 24, 2015
    Publication date: June 29, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mizuho Nagata, Toshitaka Takahashi, Eriko Nakao
  • Publication number: 20160215182
    Abstract: It is an object of the invention to provide a water-dispersible pressure-sensitive adhesive composition capable of forming a pressure-sensitive adhesive layer having removability and a sufficient level of adhesion reliability and to provide a pressure-sensitive adhesive layer made from such a water-dispersible pressure-sensitive adhesive composition. It is another object of the invention to provide a pressure-sensitive adhesive optical film including an optical film and such a pressure-sensitive adhesive layer provided on at least one side of the optical film and to provide an image display device having such a pressure-sensitive adhesive optical film. The present invention relates to a water-dispersible pressure-sensitive adhesive composition, comprising emulsion particles each having a core-shell structure in which (A) a (meth)acryl copolymer forms a core layer and (B) another (meth)acryl copolymer forms a shell layer, wherein the (meth)acryl copolymer (B) has a glass transition temperature of ?10° C.
    Type: Application
    Filed: February 7, 2014
    Publication date: July 28, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toshitaka Takahashi, Yousuke Makihata, Kayo Shimokawa, Mizuho Nagata, Kenichi Okada, Toshitsugu Hosokawa
  • Publication number: 20160130478
    Abstract: A pressure-sensitive adhesive composition for an optical film, includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including, as a main component, an alkyl(meth)acrylate having an alkyl group of 4 to 18 carbon atoms; and a phosphate ester compound. The pressure-sensitive adhesive composition is capable of forming a pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer that is for use on optical films and makes it possible to suppress an increase in the surface resistance of a transparent conductive layer even when a laminate including a transparent conductive layer and an optical film such as a polarizing plate with the pressure-sensitive adhesive layer interposed therebetween is stored under hot and humid conditions.
    Type: Application
    Filed: June 24, 2014
    Publication date: May 12, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mizuho Nagata, Toshitaka Takahashi, Yousuke Makihata, Kayo Shimokawa, Kenichi Okada, Toshitsugu Hosokawa
  • Publication number: 20150353787
    Abstract: It is an object of the invention to provide a water-dispersible pressure-sensitive adhesive composition that is suitable for use on a transparent conductive layer and capable of forming a pressure-sensitive adhesive layer effective in suppressing the corrosion of various adherends such as transparent conductive thin coatings, in particular, effective in suppressing the corrosion in a high-temperature environment and a high-temperature, high-humidity environment, and capable of providing good optical properties on a transparent conductive layer.
    Type: Application
    Filed: December 20, 2013
    Publication date: December 10, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mizuho Nagata, Kenichi Okada, Toshitaka Takahashi, Yousuke Makihata, Kayo Shimokawa, Toshitsugu Hosokawa