Patents by Inventor Yas Tanaka

Yas Tanaka 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).

  • Two-stroke motorcycle lubricant
    Patent number: 6281173
    Abstract: A two-stroke motorcycle lubricant comprising a base oil having a viscosity at 100° C. of less than 8 cSt and a pour point below −30° C., preferably below −39° C. The two-stroke motorcycle lubricant further comprises a detergent system based on an ashless, oil-soluble amine. The two-stroke motorcycle lubricant exhibits high levels of cleanliness and low levels of exhaust smoke, whilst maintaining high load carrying capacity. The two-stroke motorcycle lubricant may be dyed.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: August 28, 2001
    Assignee: Castrol Limited
    Inventors: Yas Tanaka, Paul Fritz-Johnson, Howard Silver, David James Atkinson