Patents by Inventor Hideyuki Funasaka

Hideyuki Funasaka 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).

  • Metal-encapsulated fullerene compound and a method of synthesizing such compound
    Patent number: 5869626
    Abstract: A novel metal-encapsulated fullerene compound wherein a side chain is introduced in a metal-encapsulated fullerene is provided.A metal-encapsulated fullerene compound represented by the following structural formula (1) is synthesized by causing a disilirane derivative or digermirane derivative having the following structural formula (2) to react with a metal-encapsulation fullerene so as to add functional groups to the fullerene. ##STR1## Herein, M is an encapsulated metal atom, m is an integer from 1 to 3, n is an even number from 28 to 200, and R is a t-butyl group or an aromatic group having alkyl groups in the 2,6-positions, such as mesityl, 2,6-diethylphenyl or 2,6-dimethylphenyl groups.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: February 9, 1999
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Kazunori Yamamoto, Hideyuki Funasaka, Takeshi Takahashi, Takeshi Akasaka, Tatsuhisa Kato, Shigeru Nagase, Kaoru Kobayashi
  • Metal-encapsulated fullerene derivative compound of and method for making the derivative
    Patent number: 5717076
    Abstract: There are provided a derivative of a metal-encapsulated fullerene having application as a functional material, superconducting material, electronics material or pharmaceutical material, and a method of synthesizing this derivative. The derivative of a metal-encapsulated fullerene having the following structure is synthesized by adding a substituted diazomethane to a metal-encapsulated fullerene and denitrifying in a solvent.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: February 10, 1998
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Kazunori Yamamoto, Hideyuki Funasaka, Takeshi Takahashi, Toshiyasu Suzuki, Yusei Maruyama, Tatsuhisa Kato, Takeshi Akasaka