Patents by Inventor Yosiaki Murakami

Yosiaki Murakami 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).

  • Solid lubricant
    Patent number: 4252658
    Abstract: A solid lubricant comprising a substantially amorphous carbon micro-sphere selected from carbon micro-beads and carbon micro-balloons having a particle size of 0.1 to 1,000.mu. and a specific gravity of the particle of 0.2 to 2.0, which has excellent low frictional coefficient and wearing resistance.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: February 24, 1981
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Akira Tasaka, Yosiaki Murakami