Patents by Inventor Shuji Kawabe

Shuji Kawabe 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).

  • Methods for the production of 2-halo-4-nitroimidazole and intermediates thereof
    Patent number: 8558005
    Abstract: The present invention relates to a method for the production of 2-halo-4-nitroimidazole and intermediates thereof. Further, the present invention relates to a production process of 1,4-dinitroimidazole comprising subjecting 4-nitroimidazole to nitration reaction. Furthermore, the present invention relates to a production process of 4-nitroimidazole comprising subjecting imidazole to nitration reaction.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 15, 2013
    Assignees: Dynamit Nobel GmbH Explosivstoff-und Systemtechnik, Asahi Kasei Chemicals Corporation, Otsuka Pharmaceutical Co., Ltd.
    Inventors: Guido Wuellner, Franz-Willi Herkenrath, Alexander Juelich, Yoshinori Yamada, Shuji Kawabe
  • METHODS FOR THE PRODUCTION OF 2-HALO-4-NITROIMIDAZOLE AND INTERMEDIATES THEREOF
    Publication number: 20110178308
    Abstract: The present invention relates to a method for the production of 2-halo-4-nitroimidazole and intermediates thereof. Further, the present invention relates to a production process of 1,4-dinitroimidazole comprising subjecting 4-nitroimidazole to nitration reaction. Furthermore, the present invention relates to a production process of 4-nitroimidazole comprising subjecting imidazole to nitration reaction.
    Type: Application
    Filed: August 21, 2009
    Publication date: July 21, 2011
    Inventors: Guido Wuellner, Franz-Willi Herkenrath, Alexander Juelich, Yoshinori Yamada, Shuji Kawabe
  • Connection establishment method without specifying called terminal, switched network control device and system using this method
    Patent number: 6791951
    Abstract: A first connection stage includes connecting by a switched network control device a call from a first terminal with a terminal selection device, noticing “there is no terminal to be connected” to the first terminal as a selected result from the terminal selection device when no terminal is selected, and disconnecting the call. A second connection stage includes connecting by the switched network control device a call from a second terminal with the terminal selection device, noticing “there is a terminal to be connected” and “a connection number of the first terminal” to the second terminal as a selected result from the terminal selection device when the first terminal is selected, and disconnecting the call.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: September 14, 2004
    Assignee: KDD Corporation
    Inventors: Junnosuke Miyamoto, Hitomi Murakami, Shuji Kawabe, Kazuyasu Matsumoto
  • Process for the preparation of hexanitrohexaazaisowurtzitanes
    Patent number: 6297372
    Abstract: A nitro group-containing hexaazaisowurtzitane derivative represented by the following general formula (I): W An N(6−n)  (I) wherein n is an integer of 4 or 5, A is an acyl group having 1-10 carbon atoms with each acyl group being the same as or different from one or more of the others, N is a nitro group and W is a hexavalent hexaazaisowurtzitane residue represented by the following formula (II): a nitroso group-containing hexaazaisowurtzitane derivative represented by the following general formula (III): W An NS(6−n)  (III) wherein n is an integer of 4 or 5, A is an acyl group having 1-10 carbon atoms with each acyl group being the same as or different from one or more of the others, NS is a nitroso group and W is a hexavalent hexaazaisowurtzitane residue of formula (II) above, and an acyl group-containing hexaazaisowurtzitane derivative represented by the following general formula (IV): W Am H(6−m)  (IV) wherein N is an integer of 4-6,
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: October 2, 2001
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Shuji Kawabe, Hiroshi Miya, Tamotsu Kodama, Nobuhisa Miyake