Patents by Inventor Linda K. Cohu

Linda K. Cohu 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 oil for methanol fueled engines
    Patent number: 5256322
    Abstract: A lubricating oil for use in methanol fueled internal combustion engines, the lubricating oil having a total base number from 9.0 to about 14.0 and comprising:a) a suitable base oil;b) overbased sodium sulfonate in an amount sufficient to provide a base number from about 1.0 to about 2.0 in said lubricating oil; andc) at least one metal sulfonate selected from the group consisting of overbased calcium sulfonate, overbased magnesium sulfonate and mixtures thereof in an amount sufficient to provide a base number from about 8.0 to about 12.0 in said lubricating oil.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 26, 1993
    Assignee: Atlantic Richfield Company
    Inventor: Linda K. Cohu