Patents by Inventor Yukitsugu MAEDA

Yukitsugu MAEDA 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: 10336708
    Abstract: A novel imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and oxidation of a wiring surface; a metal surface treatment liquid that contains the imidazole compound; a metal surface treatment method that uses the metal surface treatment liquid; and a laminate production method that uses the surface treatment liquid. A metal is surface-treated using the surface treatment liquid which includes a saturated fatty acid or a saturated fatty acid ester of a specific structure, in which a prescribed position is substituted by an aromatic group of a prescribed structure and an imidazolyl group that may have a substituent group.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: July 2, 2019
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Tatsuro Ishikawa, Kunihiro Noda, Yasuhide Ohuchi, Hiroki Chisaka, Dai Shiota, Yukitsugu Maeda, Takafumi Imoto, Kouhei Fujita, Yasuyuki Akai
  • Publication number: 20170247334
    Abstract: A novel imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and oxidation of a wiring surface; a metal surface treatment liquid that contains the imidazole compound; a metal surface treatment method that uses the metal surface treatment liquid; and a laminate production method that uses the surface treatment liquid. A metal is surface-treated using the surface treatment liquid which includes a saturated fatty acid or a saturated fatty acid ester of a specific structure, in which a prescribed position is substituted by an aromatic group of a prescribed structure and an imidazolyl group that may have a substituent group.
    Type: Application
    Filed: August 27, 2015
    Publication date: August 31, 2017
    Inventors: Tatsuro ISHIKAWA, Kunihiro NODA, Yasuhide OHUCHI, Hiroki CHISAKA, Dai SHIOTA, Yukitsugu MAEDA, Takafumi IMOTO, Kouhei FUJITA, Yasuyuki AKAI
  • Patent number: 9206138
    Abstract: Provided is a high-purity crystal of an unsaturated carboxylic acid amide compound which is useful as or for fine chemicals such as pharmaceuticals, agricultural chemicals, polymeric materials, functional materials, and intermediates of them. The crystal includes an unsaturated carboxylic acid amide compound represented by Formula (1) in an amount of 95 percent by area or more. In X-ray diffraction, the crystal exhibits peaks at 2? in the range of 29.0 to 30.0 and in at least one range selected from 6.0 to 8.0, 12.0 to 13.5, and 16.5 to 17.5 and exhibits approximately no peak at 2? in the range of 14.0 to 15.0.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: December 8, 2015
    Assignee: Daicel Corporation
    Inventors: Yukitsugu Maeda, Takafumi Imoto, Yasuyuki Akai, Kouhei Fujita, Shinya Sahara
  • Publication number: 20150299135
    Abstract: Provided is a high-purity crystal of an unsaturated carboxylic acid amide compound which is useful as or for fine chemicals such as pharmaceuticals, agricultural chemicals, polymeric materials, functional materials, and intermediates of them. The crystal includes an unsaturated carboxylic acid amide compound represented by Formula (1) in an amount of 95 percent by area or more. In X-ray diffraction, the crystal exhibits peaks at 2? in the range of 29.0 to 30.0 and in at least one range selected from 6.0 to 8.0, 12.0 to 13.5, and 16.5 to 17.5 and exhibits approximately no peak at 2? in the range of 14.0 to 15.0.
    Type: Application
    Filed: August 5, 2013
    Publication date: October 22, 2015
    Applicant: DAICEL CORPORATION
    Inventors: Yukitsugu MAEDA, Takafumi IMOTO, Yasuyuki AKAI, Kouhei FUJITA, Shinya SAHARA