Patents by Inventor Itaru Ishibashi

Itaru Ishibashi 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 agent for use in warm and hot forging
    Patent number: 5141659
    Abstract: A lubricating composition possessing properties highly suitable for warm and hot forging has an ultrahigh molecular polyethylene powder possessing a molecular weight of not less than 1,000,000 dispersed and contained in a medium of water or oil; has an ultrahigh molecular polyethylene powder possessing a molecular weight of not less than 1,000,000 and an inorganic solid lubricant of a white or light color dispersed and contained in a medium of water or oil; or has an ultrahigh molecular polyethylene powder possessing a molecular weight of not less than 1,000,000 and a polyethylene oxide powder possessing a melting point in the range of 80.degree. to 120.degree. C. dispersed and contained in a medium of water.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: August 25, 1992
    Assignee: Sumico Lubricant Co., Ltd.
    Inventors: Satoshi Kashiwaya, Itaru Ishibashi, Tamotsu Nakamura