Patents by Inventor Noritaka Kuroda

Noritaka Kuroda 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).

  • Substituted thiazole derivatives bearing 3-pyridyl groups, process for preparing the same and use thereof
    Patent number: 7067537
    Abstract: The present invention provides a pharmaceutical composition having a steroid C17,20-lyase inhibitory activity, which is useful as a prophylactic or therapeutic agent of prostatism, tumor such as breast cancer and the like, more particularly, a steroid C17,20-lyase inhibitor containing a compound represented by the formula: wherein A1 is an aromatic hydrocarbon group optionally having substituents or a heterocyclic group optionally having substituents, one of A2 and A3 is a hydrogen atom, a halogen atom, a C1-4 aliphatic hydrocarbon group optionally having substituents or an optionally esterified carboxyl group, the other of A2 and A3 is an aromatic hydrocarbon group optionally having substituents or a heterocyclic group optionally having substituents, and at least one of A1, A2 and A3 is a 3-pyridyl group optionally having substituents, or a salt thereof or a prodrug thereof.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: June 27, 2006
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Noritaka Kuroda, Yoshi Nara, Shohei Hashiguchi, Akihiro Tasaka, Masami Kusaka, Masuo Yamaoka, Tomohiro Kaku
  • Substituted thiazole derivatives bearing 3-pyridyl groups, process for preparing the same and use thereof
    Publication number: 20040072876
    Abstract: The present invention provides a pharmaceutical composition having a steroid C17,20-lyase inhibitory activity, which is useful as a prophylactic or therapeutic agent of prostatism, tumor such as breast cancer and the like, more particularly, a steroid C17,20-lyase inhibitor containing a compound represented by the formula: 1
    Type: Application
    Filed: June 4, 2003
    Publication date: April 15, 2004
    Inventors: Noritaka Kuroda, Yoshi Nara, Shohei Hashiguchi, Akihiro Tasaka, Masami Kusaka, Masuo Yamaoka, Tomohiro Kaku
  • Process for producing aldehyde derivatives
    Patent number: 5527952
    Abstract: The present invention provides a novel process for producing 4-acyloxy-2-methyl-2-buten-1-al readily in high yield from a readily available inexpensive industrial starting compound without using special reaction apparatuses and conditions.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: June 18, 1996
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Noritaka Kuroda, Tatsuhiko Kaneko, Kenichi Kashiwa
  • Process for producing .alpha.,.beta.-unsaturated aldehydes
    Patent number: 5471004
    Abstract: The present invention relates to a process for producing an .alpha.,.beta.-unsaturated aldehyde which comprises subjecting an allyl-hexamethylenetetraammonium derivative to hydrolysis in water and an organic solvent homogeneously immiscible with water. The resulting .alpha.,.beta.-unsaturated aldehyde is useful as medicaments, flavorings, etc., or as raw materials for their production.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: November 28, 1995
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Tatsuhiko Kaneko, Noritaka Kuroda, Kenichi Kashiwa
  • Optical fiber type polarizer
    Patent number: 5386484
    Abstract: An optical fiber type polarizer comprises a first optical fiber constituted by a birefringent optical fiber wound at a predetermined winding radius and having winding start and end fixed to each other by an adhesive, the first optical fiber having short extra portions respectively extending from the winding start and end, and the length of each of the short extra porions being at least as small as the predetermined winding radius. The optical fiber type polarizer further comprises a second optical fiber spliced to one of the short extra portions of the first optical fiber, and a third optical fiber spliced to the other of the short extra portions of the first optical fiber.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: January 31, 1995
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Akihiro Ooka, Kenji Kawamura, Yozo Nishiura, Katsuaki Itoh, Takaki Iwashita, Yasuhiko Nishi, Noritaka Kuroda, Hayato Hasegawa