Patents by Inventor Masaaki Ichino

Masaaki Ichino 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).

  • Recovery of acetic anhydride
    Patent number: 4737318
    Abstract: Acetic anhydride is recovered from a mixture of acetic anhydride, acetic acid and water by contacting the mixture with at least one extraction solvent selected from the group consisting of a hydrophobic, organic solvent, a ketone and an ester to extract and recover acetic anhydride.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: April 12, 1988
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Masaaki Ichino, Kunio Koga, Tsutomu Mizuta, Takashi Matsuyama
  • Process for producing glyoxalic acid by electrolytic oxidation
    Patent number: 4235684
    Abstract: A process for producing glyoxalic acid which comprises electrolytically oxidizing glyoxal in an electrolytic cell comprising at least one anode, at least one cathode and at least one cation exchange membrane therebetween to define an anode compartment(s) and a cathode compartment(s) therein, using an aqueous solution containing glyoxal and halogen ions as an anolyte solution and an aqueous solution containing an inorganic or organic electrolyte as a catholyte solution.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: November 25, 1980
    Assignees: Chlorine Engineers Corp., Ltd., Daicel Chemical Industries Ltd.
    Inventors: Hiroyuki Harada, Kazuhiro Hirao, Tadayuki Mitani, Masaaki Ichino