Patents by Inventor Toshio Kondoh

Toshio Kondoh 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).

  • BORONIC ACID COMPOUND AND METHOD FOR PRODUCING SAME
    Publication number: 20240124496
    Abstract: The invention provides a method for producing radiolabeled tyrosine derivatives with good purity and stability, by a safe method suitable for industrial production of pharmaceuticals. The invention relates to a method for producing Compound (5) and Radiolabeled Compound (6) as follows: wherein each symbol is as defined in the description.
    Type: Application
    Filed: March 24, 2022
    Publication date: April 18, 2024
    Applicant: OSAKA UNIVERSITY
    Inventors: Yoshifumi SHIRAKAMI, Kazuko KANEDA, Yuichiro KADONAGA, Tadashi WATABE, Atsushi TOYOSHIMA, Koichi FUKASE, Atsushi SHINOHARA, Toshio YAMANAKA, Yutaka KONDOH
  • Flux washing agent
    Patent number: 5693599
    Abstract: A flux washing agent which comprises an aqueous solution containing a quaternary ammonium salt and hydrazine is disclosed. The flux washing agent is used in the production of printed circuit boards and the like. The flux washing agent has a washing ability, and a property to suppress etching of solder which are comparable with those of Flon 113 and trichloroethylene heretofore used as flux washing agents. Furthermore, the flux washing agent is safe, does not cause environmental pollution and has an excellent rinsing property.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: December 2, 1997
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Tetsuo Aoyama, Toshio Kondoh, Toshihiko Kobayashi, Kaoru Tsuyuki
  • Active carbon materials, process for the preparation thereof and the use thereof
    Patent number: 5338462
    Abstract: The present invention relates to specific activated carbon materials including from 1 to 5% by weight of nitrogen, from 3 to 30% by weight of oxygen and from 40 to 95% by weight of carbon, and having an average pore radius of from 15 to 30 .ANG., with the proviso that mesopores occupy at least 50% by volume based on the total pore volume, and also relates a process for the preparation thereof, and to the use thereof as catalysts.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: August 16, 1994
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Hisaki Abe, Toshio Kondoh, Hideki Fukuda, Mayumi Takahashi, Tetsuo Aoyama, Masahiro Miyake
  • Active carbon materials, process for the preparation thereof and the use thereof
    Patent number: 5242879
    Abstract: The present invention relates to specific activated carbon materials including from 1 to 5% by weight of nitrogen, from 3 to 30% by weight of oxygen and from 40 to 95% by weight of carbon, and having an average pore radius of from 15 to 30 .ANG., with the proviso that mesopores occupy at least 50% by volume based on the total pore volume, and also relates a process for the preparation thereof, and to the use thereof as catalysts.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: September 7, 1993
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Hisaki Abe, Toshio Kondoh, Hideki Fukuda, Mayumi Takahashi, Tetsuo Aoyama, Masahiro Miyake