Patents by Inventor Vic M. Cheng

Vic M. Cheng 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).

  • Multifunctional additives
    Patent number: 5407592
    Abstract: A lubricant of fuel composition contains a multifunctional antioxidant/metal deactivating and thermal stabilizing amount of a tolyltriazole-derived Mannich base made from a tolyltriazole, an aliphatic amine, such as diisobutylamine or bis(2-ethylhexyl)amine, a cyclic amine, such as 1,4-diaminocyclohexane or ether amines exemplified by C.sub.6 to C.sub.13 alkoxypropylamines and polyether primary amines such as those derived from nonylphenol ethyoxylates and formaldehyde. The reaction products are, optionally, treated with epoxide.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: April 18, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Vic M. Cheng, Liehpao O. Farng, Andrew G. Horodysky, Ronald J. Poole