Patents by Inventor Jiro HIKIDA

Jiro HIKIDA 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: 11718587
    Abstract: A novel compound suitable as an epoxy curing catalyst; an epoxy curing catalyst using the compound; and a method for producing the compound. A compound represented by formula (1) in which Xm+ represents an m valent counter cation, R1 represents an aromatic group which may have a substituent; R2 represents an alkylene group which may have a substituent; R3 represents a halogen atom, a hydroxyl group, a mercapto group, a sulfide group, a silyl group, a silanol group, a nitro group, a nitroso group, a sulfonic acid ester group, a phosphino group, a phosphinyl group, a phosphonic acid ester group or an organic group; m represents an integer of 1 or more; n represents an integer of 0-3; and R2 may bond with R1 to form a cyclic structure.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: August 8, 2023
    Assignees: Tokyo Ohka Kogyo Co., Ltd., Daicel Corporation
    Inventors: Kunihiro Noda, Hiroki Chisaka, Issei Suzuki, Jiro Hikida, Dai Shiota, Kieko Hanano, Kyohei Ishida, Tsutomu Watanabe, Kazuhiro Uehara
  • Patent number: 11260635
    Abstract: A resin composition resulting in a cured article which is excellent in balance among mechanical strength, surface smoothness, and light transmittance, a method for producing a cured article, a cured article, and a flexible substrate or flexible display including the cured article. The resin composition includes a polyamic acid having a structural unit represented by the following formula (1), a cellulose compound having a weight average molecular weight of 60,000 or less, and an organic solvent. In the formula (1), A is a tetravalent organic group and B is a divalent organic group.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: March 1, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideki Saijo, Hiroyuki Kikuchi, Jiro Hikida, Dai Shiota
  • Patent number: 11174221
    Abstract: An aromatic amine compound capable of satisfactorily forming a cured product having exceptional alkali resistance by reaction with an epoxy compound; a curing agent for an epoxy compound, the curing agent including the aromatic amine compound; a curable composition including the curing agent for an epoxy compound; a cured product of the curable composition; a method for producing the cured product; and a method for producing the abovementioned aromatic amine compound. The aromatic amine compound has a structure such that a specific position in a central skeleton comprising a fused ring such as a fluorene ring is substituted with a side-chain group including two aromatic groups linked by a flexible bond such as an amide bond, at least one amino group is bonded to the end of the side-chain group, and the structure has no hydroxyl groups.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: November 16, 2021
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Jiro Hikida, Dai Shiota
  • Patent number: 11142629
    Abstract: A hydrogen barrier agent capable of imparting hydrogen barrier performance to various materials; a hydrogen barrier film forming composition including the hydrogen barrier agent; a hydrogen barrier film including the hydrogen barrier agent; a method for producing a hydrogen barrier film, which uses the composition; and an electronic element provided with the hydrogen barrier film. A salt compound having a specific structure including an imidazolyl group is used as the hydrogen barrier agent. The composition is prepared by blending the hydrogen barrier agent into the base material component. The hydrogen barrier film is formed using the hydrogen barrier film forming composition.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: October 12, 2021
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Jiro Hikida, Kazuya Someya, Koichi Misumi, Dai Shiota
  • Publication number: 20210189080
    Abstract: A composition that makes it easy to form a hard coat having both high hardness and high transparency regardless of the surface hardness level of the article to be hard-coated; a method for producing an article having a hard coat using such a composition; a hard coat including a cured product of such a composition; a hard-coated article having such a hard coat; and a silane-modified alicyclic compound suitable for use as a component of such a composition. The composition includes a silane-modified alicyclic compound that is a mixture of products of reaction of an alicyclic tetracarboxylic dianhydride with an aminosilane compound having a specific structure with a hydrolyzable silyl group.
    Type: Application
    Filed: December 11, 2020
    Publication date: June 24, 2021
    Inventors: Jiro HIKIDA, Masato MIYAZAKI, Dai SHIOTA
  • Publication number: 20210130284
    Abstract: An aromatic amine compound capable of satisfactorily forming a cured product having exceptional alkali resistance by reaction with an epoxy compound; a curing agent for an epoxy compound, the curing agent including the aromatic amine compound; a curable composition including the curing agent for an epoxy compound; a cured product of the curable composition; a method for producing the cured product; and a method for producing the abovementioned aromatic amine compound. The aromatic amine compound has a structure such that a specific position in a central skeleton comprising a fused ring such as a fluorene ring is substituted with a side-chain group including two aromatic groups linked by a flexible bond such as an amide bond, at least one amino group is bonded to the end of the side-chain group, and the structure has no hydroxyl groups.
    Type: Application
    Filed: July 26, 2018
    Publication date: May 6, 2021
    Inventors: Jiro HIKIDA, Dai SHIOTA
  • Publication number: 20190300674
    Abstract: A hydrogen barrier agent capable of imparting hydrogen barrier performance to various materials; a hydrogen barrier film forming composition including the hydrogen barrier agent; a hydrogen barrier film including the hydrogen barrier agent; a method for producing a hydrogen barrier film, which uses the composition; and an electronic element provided with the hydrogen barrier film. A salt compound having a specific structure including an imidazolyl group is used as the hydrogen barrier agent. The composition is prepared by blending the hydrogen barrier agent into the base material component. The hydrogen barrier film is formed using the hydrogen barrier film forming composition.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Jiro HIKIDA, Kazuya SOMEYA, Koichi MISUMI, Dai SHIOTA
  • Publication number: 20180230330
    Abstract: A resin composition resulting in a cured article which is excellent in balance among mechanical strength, surface smoothness, and light transmittance, a method for producing a cured article, a cured article, and a flexible substrate or flexible display including the cured article. The resin composition includes a polyamic acid having a structural unit represented by the following formula (1), a cellulose compound having a weight average molecular weight of 60,000 or less, and an organic solvent. In the formula (1), A is a tetravalent organic group and B is a divalent organic group.
    Type: Application
    Filed: February 2, 2018
    Publication date: August 16, 2018
    Inventors: Hideki SAIJO, Hiroyuki KIKUCHI, Jiro HIKIDA, Dai SHIOTA
  • Patent number: 10023540
    Abstract: To provide a hydrogen barrier agent capable of imparting hydrogen barrier performance to various materials; a hydrogen barrier film forming composition including the hydrogen barrier agent; a hydrogen barrier film including the hydrogen barrier agent; a method for producing a hydrogen barrier film, which uses the hydrogen barrier film forming composition; and an electronic element provided with the hydrogen barrier film. A compound having a specific structure including an imidazolyl group is used as the hydrogen barrier agent. Furthermore, the hydrogen barrier film forming composition is prepared by blending the above-mentioned hydrogen barrier agent into the base material component. In addition, the hydrogen barrier film is formed using the hydrogen barrier film forming composition.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 17, 2018
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Jiro Hikida, Kazuya Someya, Koichi Misumi, Dai Shiota
  • Patent number: 9981914
    Abstract: To provide a hydrogen barrier agent capable of imparting hydrogen barrier performance to various materials; a hydrogen barrier film forming composition including the hydrogen barrier agent; a hydrogen barrier film including the hydrogen barrier agent; a method for producing a hydrogen barrier film, which uses the hydrogen barrier film forming composition; and an electronic element provided with the hydrogen barrier film. A compound having a specific structure including an imidazolyl group is used as the hydrogen barrier agent. Furthermore, the hydrogen barrier film forming composition is prepared by blending the above-mentioned hydrogen barrier agent into the base material component. In addition, the hydrogen barrier film is formed using the hydrogen barrier film forming composition.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 29, 2018
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Jiro Hikida, Kazuya Someya, Koichi Misumi, Dai Shiota
  • Publication number: 20180086717
    Abstract: To provide a hydrogen barrier agent capable of imparting hydrogen barrier performance to various materials; a hydrogen barrier film forming composition including the hydrogen barrier agent; a hydrogen barrier film including the hydrogen barrier agent; a method for producing a hydrogen barrier film, which uses the hydrogen barrier film forming composition; and an electronic element provided with the hydrogen barrier film. A compound having a specific structure including an imidazolyl group is used as the hydrogen barrier agent. Furthermore, the hydrogen barrier film forming composition is prepared by blending the above-mentioned hydrogen barrier agent into the base material component. In addition, the hydrogen barrier film is formed using the hydrogen barrier film forming composition.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 29, 2018
    Inventors: Jiro HIKIDA, Kazuya SOMEYA, Koichi MISUMI, Dai SHIOTA