Patents by Inventor Hiroo Mitazaki

Hiroo Mitazaki 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).

  • Lubricating oil for metal working
    Patent number: 4832860
    Abstract: A lubricating oil for metal working comprises a base oil and a diester of a branched aliphatic dicarboxylic acid having from 12 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 6 carbon atoms. The lubricating oil is excellent in rolling properties and causes no heat scratching, and permits the production of rolled plates having good gloss. These properties are further improved by adding a monoester compound having from 13 to 48 carbon atoms to the above oil.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: May 23, 1989
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Tadashi Katafuchi, Hiroo Mitazaki, Seiichi Shido, Yasunori Tomari, Kenji Onodera