Patents by Inventor John Hillhouse

John Hillhouse 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).

  • Phosphonium and imidazolium salts and methods of their preparation
    Publication number: 20060264645
    Abstract: Novel phosphonium and imidazolium salts and methods for preparing them are disclosed. The novel phosphonium and imidazolium compounds are useful as polar solvents and have the general formula (I): Q+X? wherein Q+ is formula (a) or formula (b); and X? is formula (c), formula (d) or formula (e); and wherein: each of R1, R2, R3, R4, R5, R9, R10, R11, R12, and R13 is independently a hydrocarbyl group; each of R6, R7, and R8 is independently a hydrogen or hydrocarbyl group.
    Type: Application
    Filed: August 8, 2003
    Publication date: November 23, 2006
    Inventors: Yuehui Zhou, Allan Robertson, John Hillhouse, Douglas Baumann