Patents by Inventor Tamotsu Takahasi

Tamotsu Takahasi 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).

  • Polyacene derivatives and production thereof
    Patent number: 7901594
    Abstract: The present invention relates to polyacene derivatives represented by general formula (I) below: (wherein R1 to R10, etc. each represents hydrogen atom, hydrocarbon group, or an alkoxy group; A1 and A2 are hydrogen atom, a halogen atom, a hydrocarbon group, an alkoxy group, cyano group, etc.; n is an integer of not less than 1; R6 and R7 may be linked to each other to form a ring); and a process for preparing the polyacene derivatives from polyhydro compounds as well as electrically conductive materials comprising the polyacene derivatives. According to the process for preparing the polyacene derivatives of the present invention, optional substituents can be introduced into any carbon atoms of the polyacene, and the number of aromatic rings can be increased.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: March 8, 2011
    Assignee: Japan Science and Technology Corporation
    Inventor: Tamotsu Takahasi