Patents by Inventor Takamasa Fuchigami

Takamasa Fuchigami 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 aromatic primary amine by low-pressure
    Patent number: 6476267
    Abstract: A method for producing an aromatic primary amine, characterized by hydrogenating an aromatic nitrile at a low partial pressure of hydrogen in a heterogeneous system comprising a non-reductive polar solvent and a nickel-immobilized catalyst suspended therein was proposed. By such method, an aromatic primary amine which is industrially useful as a medicine, agricultural chemical, dye surfactant, chemical agent, etc. can be produced in a high yield.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: November 5, 2002
    Assignee: Sagami Chemical Research Center
    Inventors: Takamasa Fuchigami, Satoshi Takamizawa, Noriko Wakasa
  • Copolymer of fluoromethacrylate with styrene or its derivative and method of preparing same
    Patent number: 4609715
    Abstract: An .alpha.-trifluoromethylacrylate, which does not undergo radical homopolymerization, is easily and efficiently copolymerized with styrene or its derivatives by using a common radical polymerization initiator. The composition of the resultant copolymer does not greatly vary with the proportions of the monomers subjected to copolymerization and usually is close to an alternating copolymer.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: September 2, 1986
    Assignee: Central Glass Company, Limited
    Inventors: Toshio Koishi, Akira Ishihara, Takamasa Fuchigami, Iwao Ojima