Patents by Inventor Beth A. RUSSELL

Beth A. RUSSELL 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: 20240110120
    Abstract: A method for making a base oil having enhanced color stability and the base oil prepared therefrom are disclosed. The method comprises adding a phenyl benzotriazole compound to a base oil composition to form a color-stabilized base oil composition. In some cases, the phenyl benzotriazole compound has the structural formula (I): wherein, R and R? are independently one or more substituents selected from hydrogen, substituted and unsubstituted alkyl, substituted and unsubstituted cycloalkyl, substituted and unsubstituted alkoxy, substituted and unsubstituted carboxyl, or a combination thereof, with the proviso that at least one of R and R? is a non-hydrogen substituent.
    Type: Application
    Filed: January 18, 2022
    Publication date: April 4, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Yihua ZHANG, Guan-Dao LEI, Malek M. ROSTAMI, Beth A. RUSSELL