Patents by Inventor Masashi Ukida

Masashi Ukida 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 sulfenimides
    Patent number: 4219393
    Abstract: Sulfenimides are prepared by electrolytic oxidation of organic disulfides or mercaptans and imides. The electrolytic oxidation is accelerated by a halide compound.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: August 26, 1980
    Assignee: Ouchi Shinko Kagaku Kogyo Kabushiki Kaisha
    Inventors: Sigeru Torii, Hideo Tanaka, Masashi Ukida
  • Preparation of benzothiazolylsulfenamides
    Patent number: 4127454
    Abstract: Benzothiazolylsulfenamides are prepared in a high yield and substantially without a side reaction, via direct electrolytic oxidation, by cross-coupling (1) 2-mercaptobenzothiazole or dibenzothiazyl disulfide or an alkali metal salt of 2-mercaptobenzothiazole with (2) a primary or secondary amine, in the presence of a solvent selected from a dipolar aprotic solvent, a protic solvent, water and mixtures thereof, as well as a supporting electrolyte having adaptability to the solvent.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: November 28, 1978
    Assignee: Ouchi Shinko Kagaku Kogyo Kabushiki Kaisha
    Inventors: Sigeru Torii, Hideo Tanaka, Masashi Ukida