Patents by Inventor Ititaro Tani

Ititaro Tani 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).

  • Fire-retardant insulating oils
    Patent number: 4436654
    Abstract: A phosphoric triester containing at least one aromatic ring is mixed in an amount of 30 to 80% by weight based on the total constituents with a benzenetricarboxylic acid trialkyl ester or with a polyol ester obtained from trimethylolpropane and a saturated fatty acid to give a fire-retardant insulating oil.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: March 13, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Etsuo Ohe, Katsuo Sugawara, Ititaro Tani, Hideo Tsukioka