Patents by Inventor Toshiro Tsuchiya

Toshiro Tsuchiya 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).

  • Rock drilling apparatus
    Patent number: 5690184
    Abstract: A rock drilling apparatus includes a frame having a front end, a guide rod supported on the front end of the frame, a rotary rod extending parallel to the guide rod and supported on the frame for rotation about its own axis and longitudinal movement beyond the front end of the frame, and a drill bit mounted on a front tip end of the rotary rod. The guide rod comprises a shank fixed to the front end of the frame and a tubular member extending substantially fully over the shank and rotatably disposed around the shank.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: November 25, 1997
    Assignee: Fujita Corporation
    Inventor: Toshiro Tsuchiya
  • Protease inhibitors
    Patent number: 4348386
    Abstract: An acidic protease inhibitor obtained by allowing a compound of ##STR1## wherein X and Y are L-leucine or L-valine, or its salt, to react with an aluminum compound in a medium containing water and/or an alcohol, and further continuing the reaction after adjusting the pH of the system within a range of 4.5 to 7. The protease can stay long in stomach, have an action to protect ulcerated areas and retain the antiulcer effect for a long period of time.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: September 7, 1982
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shinichi Kojima, Ten Koide, Shigeo Ogino, Toshiro Tsuchiya, Yoshito Kameno