Patents by Inventor Tadao Kawarasaki

Tadao Kawarasaki 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 tricyclic fused heterocyclic derivative
    Patent number: 6881842
    Abstract: A process for easily and industrially advantageously producing both a tricyclic fused heterocyclic derivative having acetylcholinesterase inhibitory activity and an intermediate for the derivative. The process for producing the target compounds comprises the following reaction.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: April 19, 2005
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Tadao Kawarasaki, Hideo Hashimoto, Kiminori Tomimatsu
  • Process for producing tricyclic fused heterocyclic derivative
    Publication number: 20030191150
    Abstract: A process for easily and industrially advantageously producing both a tricyclic fused heterocyclic derivative having acetylcholinesterase inhibitory activity and an intermediate for the derivative. The process for producing the target compounds comprises the following reaction.
    Type: Application
    Filed: March 20, 2003
    Publication date: October 9, 2003
    Inventors: Tadao Kawarasaki, Hideo Hashimoto, Kiminori Tomimatsu