Patents by Inventor Lisa Ching Yeh

Lisa Ching Yeh 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).

  • Publication number: 20080171675
    Abstract: This invention relates to basestocks and base oils with improved low temperature properties and formulated lubricant compositions or functional fluids created by blending at least one such lube basestock with at least one component selected from dispersants, detergents, wear inhibitors, antioxidants, rust inhibitors, demulsifiers, extreme pressure agents, friction modifiers, multifunction additives, viscosity index improvers, pour point depressants, and foam inhibitors. In particular the invention relates to dewaxed lube basestocks having a Free Carbon Index of less than 4.3 and an Epsilon Carbon mole % of less than 14%. Formulated engine oils using such dewaxed basestocks exhibit improved low temperature properties as may be measured by the Mini Rotary Viscometer test.
    Type: Application
    Filed: May 26, 2006
    Publication date: July 17, 2008
    Inventors: Lisa Ching Yeh, Elizabeth Stavens, Robert R. Palmer, Michael Lacey, Lei Zhang