Patents by Inventor Jackson C. Chen

Jackson C. Chen 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).

  • Cold flow improver
    Patent number: 4512775
    Abstract: Cold flow properties of distillate fuel such as diesel fuel are improved by the addition of a small amount of a tetrapolymer of ethylene, a C.sub.3-32 .alpha.-olefin (e.g. hexene-1), vinyl ester of a C.sub.1-12 aliphatic monocarboxylic acid (e.g. vinyl acetate) and a vinyl substituted aromatic hydrocarbon (e.g. styrene) having an average molecular weight of 2,000-5,000.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: April 23, 1985
    Assignee: Ethyl Corporation
    Inventor: Jackson C. Chen
  • Lubricating oil composition containing a dialkyl dithiocarbamate-modified EPDM viscosity index improver
    Patent number: 4502972
    Abstract: The viscosity index and wear inhibiting properties of lubricating oil are improved by adding an effective amount of a 20,000-300,000 molecular weight olefin copolymer to which are grafted di-C.sub.1-20 alkyl dithiocarbamate groups.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: March 5, 1985
    Assignee: Ethyl Corporation
    Inventors: Bryan T. Davis, Jackson C. Chen
  • Lubricating oil ashless dispersant and lubricating oils containing same
    Patent number: 4440659
    Abstract: A lubricating oil dispersant is made by grafting an alkyl methacrylate or acrylate and maleic anhydride onto a Bright Stock mineral oil backbone using a free radical generating catalyst and then reacting the product with an amine to form amide or imide groups.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: April 3, 1984
    Assignee: Ethyl Corporation
    Inventors: Jackson C. Chen, Marguerite S. Baylerian, Bryan T. Davis, Ellis B. Rifkin