Patents by Inventor Yoshihiko Sawasaki

Yoshihiko Sawasaki 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).

  • Process for treatment of titanium and titanium alloys
    Patent number: 4874480
    Abstract: A method of producing titanium and titanium alloys having improved lubricity and cold working characteristics includes immersing titanium or titanium alloy as the cathode in an electrolytic conversion coating bath containing acidified zinc phosphate and forming a zinc phosphate coating on the titanium or titanium alloy by maintaining electrolysis conditions in the bath. Further improvements are achieved by pretreatment of the titanium or titanium alloy with a surface adjustment agent prior to immersion in the electrolytic conversion coating bath. The products are further treated with conventional lubricants and exhibit improved working characteristics.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: October 17, 1989
    Assignee: Henkel Corporation
    Inventors: Sakae Sonoda, Kouji Hetsugi, Yoshihiko Sawasaki, Kouji Kaburagi, Yasunobu Matsushima