Patents by Inventor Ken Umihara

Ken Umihara 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).

  • Process for producing N-(hetero)aryl-substituted nitrogen-containing heteroaryl compound
    Patent number: 7834183
    Abstract: A process for producing an N-(hetero)aryl-substituted nitrogen-containing heteroaryl compound, the process comprising: reacting a heteroaryl compound having an NH group as a ring-constituting component with a (hetero)aryl compound having a leaving group in the presence of a heterogeneous-system platinum group metal catalyst, a ligand and a base.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 16, 2010
    Assignee: Fujifilm Finechemicals Co., Ltd
    Inventors: Yuji Ishikawa, Susumu Harada, Ken Umihara
  • Process for producing N-(hetero)aryl-substituted nitrogen-containing heteroaryl compound
    Publication number: 20070135633
    Abstract: A process for producing an N-(hetero)aryl-substituted nitrogen-containing heteroaryl compound, the process comprising: reacting a heteroaryl compound having an NH group as a ring-constituting component with a (hetero)aryl compound having a leaving group in the presence of a heterogeneous-system platinum group metal catalyst, a ligand and a base.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 14, 2007
    Applicant: FUJIFILM FINECHEMICALS CO., LTD
    Inventors: Yuji Ishikawa, Susumu Harada, Ken Umihara
  • Process for the production of 2-pyridylpyridine derivatives
    Patent number: 6489483
    Abstract: A process for producing a 2-pyridylpyridine derivative usable as an intermediate for medicines or agricultural chemicals is provided, which does not require expensive special catalysts and special equipment, which does not cause environmental problems, and which can be conducted on an industiral scale. The process comprises reacting an acetyl-substituted pyridine derivative with a 3-amino acrolein, then reacting the reaction product with ammonia or an ammonium salt.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: December 3, 2002
    Assignee: Sankio Chemical Co., Ltd.
    Inventors: Hirokazu Suda, Ken Umihara