Patents by Inventor Kyoichi Sugawa

Kyoichi Sugawa 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).

  • Suidatrestin and production thereof
    Patent number: 5494812
    Abstract: A novel trehalase inhibitor having the following physicochemical properties:(1) Activity: a specific inhibitory activity to trehalase;(2) Form: white powder, water-soluble;(3) Somogy-Nelson test: negative(4) Rydon-Smith test: positive(5) Optical rotation [.alpha.].sub.D.sup.23 : 113.8.degree. (C, 0.1, H.sub.2 O)(6) Molecular weight: 335 ([M+H].sup.+ =336)(7) Ultraviolet absorption spectrum: 258.5 nm (max.)(8) .sup.13 C-NMR(ppm): 28.9, 41.0, 56.9, 58.4, 64.3, 65.0, 71.3, 74.0, 75.2, 75.8, 76.0, 77.1, 123.0, 144.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: February 27, 1996
    Assignee: Sawao Murao
    Inventors: Sawao Murao, Takashi Shin, Kyoichi Sugawa, Amachi Teruo
  • Suidatrestin and production thereof
    Patent number: 5354685
    Abstract: A novel trehalase inhibitor having the following physicochemical properties:(1) Activity: a specific inhibitory activity to trehalase;(2) Form: white powder, water-soluble;(3) Somogy-Nelson test: negative(4) Rydon-Smith test: positive(5) Optical rotation [.alpha.].sub.D.sup.23 : 113.8.degree. (C, 0.1 H.sub.2 O)(6) Molecular weight: 335 ([M+H].sup.+ =336)(7) Ultraviolet absorption spectrum: 258.5 nm (max.)(8) .sup.13 C-NMR(ppm): 28.9, 41.0, 56.9, 58.4, 64.3, 65.0, 71.3, 74.0, 75.2, 75.8, 76.0, 77.1, 123.0, 144.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: October 11, 1994
    Assignee: S. Murao
    Inventors: Sawao Murao, Takashi Shin, Kyoichi Sugawa, Amachi Teruo