Patents by Inventor Nobusuke Urabe

Nobusuke Urabe 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 the production of peracetic acid
    Patent number: 3963773
    Abstract: Peracetic acid is produced by the catalytic reaction of acetaldehyde with molecular oxygen or an oxygen containing gas by forwarding the reactants through an upright reaction vessel which is divided into at least three reaction zones by perforated partition plates in which the size of the perforations and the height of the reaction zones are selected so as to achieve an average gas flow velocity in the range of 0.4 - 6.0 m. per second at the perforations and a superficial gas flow velocity of 0.04 - 0.15 m. per second across the entire vessel.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: June 15, 1976
    Assignee: Daicel, Ltd.
    Inventors: Toshiharu Ishi, Akira Asahi, Hiroaki Fujita, Takeshi Sato, Nobusuke Urabe