Patents by Inventor Joseph Strukl

Joseph Strukl 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).

  • Viscosity modifiers for lubricant compositions
    Publication number: 20070191242
    Abstract: A lubricant composition method of using the lubricant composition. The lubricant composition contains a base oil of lubricating viscosity and from about 5 to about 30 percent by weight of an additive comprising a shear stable olefin copolymer derived from a copolymer having a number average molecular weight ranging from about 50,000 to about 250,000. The shear stable olefin copolymer has a shear stability index of less than about 40, a polydispersity of not more than about 1.5, and a thickening efficiency of greater than about 1.8, and provides viscosity index improving properties to the lubricant composition.
    Type: Application
    Filed: September 17, 2004
    Publication date: August 16, 2007
    Inventors: Sanjay Srinivasan, Yoon Song, Joseph Strukl, Peter Growcott, Paul Griffin, Akhilesh Duggal