Patents by Inventor Yutaka NANASHIMA

Yutaka NANASHIMA 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: 10920117
    Abstract: The invention is a curable composition comprising the following component (A) and component (B): Component (A): a curable polysilsesquioxane compound having a repeating unit represented by the following specific formula (a-1): R1—D—SiO3/2??(a-1) Component (B): a silane coupling agent having a nitrogen atom in its molecule, and a method for producing the curable composition, and a cured product obtained by curing the curable composition, and a method for using the curable composition as an adhesive for an optical element-fixing material, and a method for using the curable composition as a sealant for an optical element-fixing material, and an optical device obtained by using the curable composition as an adhesive or a sealant for an optical element-fixing material. One aspect of the curable composition according to one embodiment of the invention can provide a cured product excellent in adhesiveness and heat resistance and having a low refractive index.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: February 16, 2021
    Assignee: LINTEC CORPORATION
    Inventors: Yutaka Nanashima, Hidekazu Nakayama, Manabu Miyawaki, Mikihiro Kashio
  • Patent number: 10450485
    Abstract: A pressure sensitive adhesive sheet is provided which comprises a pressure sensitive adhesive layer formed of a pressure sensitive adhesive composition. The pressure sensitive adhesive composition contains an aliphatic polycarbonate and a pressure sensitive adhesive resin other than the aliphatic polycarbonate. The pressure sensitive adhesive sheet can be reduced in the adhesive strength at desired timing by a novel mechanism of action so that the release of an adherend becomes easy. The above pressure sensitive adhesive composition preferably contains an acid/base generator that generates an acid or a base by applying energy.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: October 22, 2019
    Assignees: LINTEC CORPORATION, SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Yosuke Koma, Yutaka Nanashima, Yoshitomo Ono, Kiyoshi Nishioka, Shizuka Hachiken
  • Patent number: 10273382
    Abstract: Provided is an antifouling composition including a tetrafunctional silane-based compound (A) having a specified structure, a trifunctional silane-based compound having a specified structure, and at least one metal catalyst (C) selected from the group consisting of a titanium-based catalyst, an aluminum-based catalyst, a tin-based catalyst, and a zinc-based catalyst, the antifouling composition satisfying the following relational expression (1). 1.5?y?2x+1??Expression (1): In the expression, x indicates the carbon number of an alkyl group that is selected for R2 in the formula (b) representing the silane-based compound (B) and indicates a number of 4 to 22; and y indicates a blending amount ratio (A)/(B) in a molar ratio of the silane-based compound (A) to the silane-based compound (B).
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: April 30, 2019
    Assignee: LINTEC CORPORATION
    Inventors: Maki Hironaga, Sou Miyata, Yoshitomo Ono, Yutaka Nanashima, Takashi Sugino
  • Publication number: 20180355111
    Abstract: The invention is a curable composition comprising the following component (A) and component (B): Component (A): a curable polysilsesquioxane compound having a repeating unit represented by the following specific formula (a-1): R1—D—SiO3/2??(a-1) Component (B): a silane coupling agent having a nitrogen atom in its molecule, and a method for producing the curable composition, and a cured product obtained by curing the curable composition, and a method for using the curable composition as an adhesive for an optical element-fixing material, and a method for using the curable composition as a sealant for an optical element-fixing material, and an optical device obtained by using the curable composition as an adhesive or a sealant for an optical element-fixing material. One aspect of the curable composition according to one embodiment of the invention can provide a cured product excellent in adhesiveness and heat resistance and having a low refractive index.
    Type: Application
    Filed: December 21, 2016
    Publication date: December 13, 2018
    Applicant: LINTEC CORPORATION
    Inventors: Yutaka NANASHIMA, Hidekazu NAKAYAMA, Manabu MIYAWAKI, Mikihiro KASHIO
  • Publication number: 20180298238
    Abstract: A pressure sensitive adhesive sheet is provided which comprises a pressure sensitive adhesive layer formed of a pressure sensitive adhesive composition. The pressure sensitive adhesive composition contains an aliphatic polycarbonate and a pressure sensitive adhesive resin other than the aliphatic polycarbonate. The pressure sensitive adhesive sheet can be reduced in the adhesive strength at desired timing by a novel mechanism of action so that the release of an adherend becomes easy. The above pressure sensitive adhesive composition preferably contains an acid/base generator that generates an acid or a base by applying energy.
    Type: Application
    Filed: October 12, 2016
    Publication date: October 18, 2018
    Inventors: Yosuke KOMA, Yutaka NANASHIMA, Yoshitomo ONO, Kiyoshi NISHIOKA, Shizuka HACHIKEN
  • Publication number: 20170369738
    Abstract: Provided is an antifouling composition including a tetrafunctional silane-based compound (A) having a specified structure, a trifunctional silane-based compound having a specified structure, and at least one metal catalyst (C) selected from the group consisting of a titanium-based catalyst, an aluminum-based catalyst, a tin-based catalyst, and a zinc-based catalyst, the antifouling composition satisfying the following relational expression (1). 1.5?y?2x+1??Expression (1): In the expression, x indicates the carbon number of an alkyl group that is selected for R2 in the formula (b) representing the silane-based compound (B) and indicates a number of 4 to 22; and y indicates a blending amount ratio (A)/(B) in a molar ratio of the silane-based compound (A) to the silane-based compound (B).
    Type: Application
    Filed: January 12, 2016
    Publication date: December 28, 2017
    Applicant: LINTEC CORPORATION
    Inventors: Maki HIRONAGA, Sou MIYATA, Yoshitomo ONO, Yutaka NANASHIMA, Takashi SUGINO