Patents by Inventor Tamiko Tsuruta

Tamiko Tsuruta 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 fluid
    Patent number: 6518225
    Abstract: The object of the present invention is to provide a water-base lubricating fluid or a water-base hydraulic fluid in place of an oily liquid which has been used as a lubricating oil or a hydraulic oil applied onto the operating part of a machine and a device. The lubricating fluid of the present invention comprises fluoride ion, hydrogencarbonate ion, and water-soluble alcohols or their derivatives.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: February 11, 2003
    Inventors: Yasuo Fukutani, Kikuko Fukutani, Yukio Wada, Eiichiro Nakayama, Yoshiyuki Futahashi, Chiyo Wada, Naomi Kitagawa, Mie Fukutani, Kosuke Wada, Shinya Fukushima, Sadayuki Futahashi, Yuko Okamoto, Sadao Futahashi, Kazuma Suzuki, Tamiko Tsuruta, Shunji Suzuki, Hitohiro Fukutani